One force that has always on you is the gravitational force on you by earth what is the newtons third law paired to this forth think opposites

One Force That Has Always On You Is The Gravitational Force On You By Earth What Is The Newtons Third

Answers

Answer 1

c. The normal force on you by earth

The Newton's third law states that, for every action there is equal and opposite reactionhe


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A block of aluminum weighing 140 g is cooled from 98.4°C to 62.2°C with the release of 1080 joules of heat. From this data, calculate the specific heat of aluminum.Group of answer choices2.11 J/g °C4.29 J/g °C0.213 J/g °C

Answers

213 J/g °C is  the specific heat of aluminum when a block of aluminum weighing 140 g is cooled from 98.4°C to 62.2°C with the release of 1080 joules of heat.

C=Specific heat

Q=heat energy (J)0.14 K

M =Mass (Kg)

∆T= change in temperature (K)

   M= 140 g = 0.14Kg

   Q - 1080 Joules.

   ∆T=98.4 – 62.2 = 36.2

Q=MC∆T

C =Q/M∆T

C= 1080÷0.14×36.2

C=213 J/g °C

The term "specific heat" refers to the quantity that quantifies how a substance's additional heat energy affects its temperature. The unit is  J/g °C. It is generally used in Thermodynamics.

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The potential difference across the ends of a wire is doubled in magnitude. If Ohm's law is obeyed, which one of the following statements concerning the resistance of the wire is true?a- The resistance is one half of its original value.b- The resistance decreases by a factor of four.c- The resistance is twice its original value.d- The resistance is not changed.e- The resistance increases by a factor of four.

Answers

Given:

The potential difference across the ends of a wire is doubled in magnitude

To find:

which one of the following statements concerning the resistance of the wire is true

Explanation:

The potential difference is doubled in magnitude. We know, according to Ohm's law,

[tex]V=IR[/tex]

I is the current and R is the resistance.

If the potential difference increases, the product of I and R also increases.

Now the resistance depends as,

[tex]\begin{gathered} R=\frac{\rho l}{A} \\ \rho\text{ is the resistivity, l is the length and A is the area of the conductor.} \end{gathered}[/tex]

The resistance is independent of potential differences. When the potential difference increases, the current also increases and the resistance remains the same.

Hence, The resistance is not changed.

A girl weighs 58kg and runs up a staircase 52m high in 23seconds. Find her minimum power output

Answers

Given,

The mass of the girl, m=58 kg

The height of the staircase, h=52 m

The time she takes to run up the staircase, t=23 s

The work the girl does to climb up the staircase is equal to the change in the potential energy of the girl.

Thus the work done is given by,

[tex]W=\text{mgh}[/tex]

Where g is the acceleration due to gravity.

On substituting the known values,

[tex]\begin{gathered} W=58\times9.8\times52 \\ =29.56\times10^3\text{ J} \end{gathered}[/tex]

The power output is equal to the rate at which the work is done

Thus the power output is given by,

[tex]P=\frac{W}{t}[/tex]

On substituting the known values,

[tex]\begin{gathered} P=\frac{29.56\times10^3}{23} \\ =1285.22\text{ W} \end{gathered}[/tex]

Thus the maximum power output is 1285.22 W

When you describe a metal surface as smooth, what property are youdescribing?7O A. ColorO B. HardnessO C. ShapeO D. TextureSUBMIT

Answers

Answer: D. Texture

Explanation:

Texture is used to describe the characteristics of a surface. A surface can be described as smooth or rough. Thus, the correct option is

D. Texture

This week we discuss injuries to the head, neck and spine. There are so many long term affects of so many different head injuries. One of the biggest changes to head injuries that we have seen in the last decade is the implementation of concussion protocol. No matter the age or activity, the medical world has a recommended protocol for possible concussions and any head injury.

This weeks assignment. Research concussion protocol and submit the following in a written paper format.

-What is a concussion?

-Why do we need to have a concussion protocol?

-Who needs a concussion protocol? This is in regards to caring for injuries, not the injured person itself,

-Is there a standard concussion protocol should you follow? What is it?

-At a minimum, concussion protocol steps should include the what people in the process?

-Have you or anyone you know had to follow concussion protocol for a head injury? Tell me about it.

This is due Sunday I want to get started on it please someone help me ?

Answers

Answer:

Concussion is the most common type of mild traumatic brain injury and can have serious consequences

Explanation:

A turkey with a mass of 9kg is running straight at you with a velocity of 5 m/s.What is the momentum of the turkey?

Answers

Given,

The mass of the turkey, m=9 kg

The velocity of the turkey, v=5 m/s

The momentum of a body is given by the product of the mass of the body and its velocity.

Thus the momentum of the turkey is given by,

[tex]p=mv[/tex]

On substituting the known values,

[tex]p=9\times5=45\text{ kg}\cdot\frac{m}{s}[/tex]

Thus, the momentum of the turkey is 45 kg·m/s

6m because of you multiply you will end up getting 6 m

Question 24 (1 point)—A beam of white light hits a prism and is dispersed into the its spectral componentsred, orange, yellow, green, blue, indigo, and violet. If a second prism is placed so thatonly the red band of light can pass through, what will happen?No light will pass through the second prism because red light does not haveenough energyThe prism will disperse the red light into many shades of redThe prism will polarize the red lightThe prism will refract the red light but it will still be the same color of red

Answers

prism can disperse a compound light

red is a single coloured light

when it will pass through the prism it will get refracted again but the output will be the red one

so the answer is

The prism will refract the red light but it will still be the same color of red

a car travels 680 km in a time of 4 h calculate its speed​

Answers

Hello..!

To calculate its speed we apply the following data.

Data:

D = 680kmT = 4hrsV = ?

Then, we apply the formula that is.

Formula:

V = D/T

Finally we develop the problem.

Developing:

V = 680km / 4hV = 170km/h

The speed of the car is 170 kilometers per hour.

You call out in a loud voice and hear an echo of your voice. Where are you most likely located?A.In a boat on a lakeB.In an open fieldC.In a canyonD.In a forest

Answers

We will have the following:

Since sound bounces off of surfaces particularly ones that are perpendicular, then in this scenario you are most likely located in a canyon.

URGENT!! ILL GIVE
BRAINLIEST!!!! AND 100 POINTS!!!!!!

Answers

Answer:

First option

Explanation:

The battery contains chemicals and the electrical energy will be produced FROM those chemicals and then when it goes into the bell the bell uses that energy to turn into sound using an electromagnet

Answer: chemical energy from the battery will be transformed into electricity energy which is this Transformer by the Dell to the security energy

Explanation:

Which formula is equivalent to

v = m / D
v = mD / v
v = D x m
v = D / m

Answers

Answer:

i don't know.

Explanation: I = me Don't = Don't know = know

Bluetooth and Wi-Fi use the same frequency band. Give one reason why Bluetooth signal does not interfere with Wi-Fi signal.

Answers

There is interference between both signals especially if they are operated in same time and space. The technology that bluetooth uses helps reduce interference from wifi signals. This technoogy is called the frequency hopping spread spectrum which changes channel frequency. This only reduces interference.

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BRAINLIEST!!!! AND 100 POINTS!!!!!!

Answers

the answer would be A

How much work must you do to stretch the spring 0.030 m ? and how much work must you do to compress it 0.030m ?

Answers

Given:

The force constant of spring is

[tex]k\text{ =2.5}\times10^4\text{ N/m}[/tex]

To find the work done when spring is stretched to 0.03 m and work done when compressed to 0.03 m.

Explanation:

The work done to stretch the spring will be

[tex]\begin{gathered} W\text{ =}\frac{1}{2}kx^2 \\ =\frac{1}{2}\times2.5\times10^4\times(0.03)^2 \\ =\text{ 11.25 J} \end{gathered}[/tex]

The work done to compress the spring will be

[tex]\begin{gathered} W\text{ =-}\frac{1}{2}kx^2 \\ =-\frac{1}{2}\times2.5\times10^4\times(0.03)^2 \\ =-11.25\text{ J} \end{gathered}[/tex]

Match each expression on the left with an equivalent expression on the right. Some answer choices on the right will not be used.1/50.451/80.6259/203/40.1250.24/55/8

Answers

Answer:

1/5 = 0.2

1/8 = 0.125

9/20 = 0.45

3/4 = 0.75

4/5 = 0.8

5/8 = 0.625

Explanations:

This exercise is to convert the given fractions to decimals

Let us find the decimal equivalents of each of the fractions first, then the equivalent choices can be matched together

1/5 = 0.2

1/8 = 0.125

9/20 = 0.45

3/4 = 0.75

4/5 = 0.8

5/8 = 0.625

Hi I just answered a question for electricity grade 12 could you please if it is correct

Answers

F = k*(q1)*(q2)/r^2

We know that:

F = 71 N

k = coulomb's constant = 9*10^9

q1 = ?

q2 = ?

We know that q1 = q2, since in the question it states that the charges are identical.

r = 0.99 m

F = k*(q1)*(q1)/r^2

F = k*(q1)^2/r^2

71 = 9*10^9 * (q1)^2 / 0.99^2

Isolating (q1)^2,

71 * 0.99^2 / (9*10^9) = (q1)^2

Taking square root of both sides to get q1 to the power of 1,

sqrt( 71 * 0.99^2 / (9*10^9) ) = q1

Now, simplifying the left side in a calculator, we get that

q1 = 8.793 * 10^-5 C = q2

It is hard to see the motion of stars because of their extreme distance from us.

Answers

It is hard to see the motion of stars because of their extreme distance from us is a True statement.

The locations of the stars in the sky remain largely constant with respect to one another. Taurus is constantly close to Orion. Draco is continually around Ursa Minor. The stars are a continuous backdrop painting when we observe the sky; they don't move much in relation to one another.

While we orbit the sun throughout the year, there are some minute movements. Stars farther away move slightly more left and right than stars closer to us. Even if it has a minor effect, it makes sense. You'll notice that distant items move less in relation to you than nearer ones if you stare out into the distance while you go along the street.

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I need help with questions number 2 I have the answer to number 1

Answers

Given,

the distance from Redd's door to the park, s=15 m

The total distance is the sum of the distance from her door to the park and the distance from the park to her door.

That is,

[tex]\begin{gathered} \text{total distance}=s+s \\ =15+15 \\ =30\text{ m} \end{gathered}[/tex]

The displacement is defined as the shortest distance from the starting and ending point of a path. The starting and ending point of Redd's path is the door.

Therefore the total displacement is zero meters.

Therefore, distance = 30 m

and displacement = 0 m

The barrel of a rifle has a length of 0.983m. A bullet leaves the
muzzle of a rifle with a speed of 602m/s. What is the
acceleration of the bullet while in the barrel? A bullet in a rifle
barrel does not have constant acceleration, but constant
acceleration is to be assumed for this problem.
Answer in units of m/s^2

Answers

According to the solving, the acceleration of the bullet while in the barrel is 184335.7 m/s^2.

What is acceleration?

Any action where the velocity changes are said to it as acceleration. There are only two ways to accelerate: altering your speed or altering your direction, or altering both. This happens because velocity is both a speed and a direction.

According to the given data,

The length of the barrel of the rifle is 0.983 m.

The speed of the bullet is 602m/s.

We know,

v^2 = u^2+ 2aS

Initial velocity, u=0

v=602m/s.

S= 0.983 m.

So,

v^2=u^2+2aS

(602)^2= 0+ 2*a*0.983

1.966a=362404

a=362404/1.966

a= 184335.7 m/s^2.

According to the solving, the acceleration of the bullet while in the barrel is 184335.7m/s^2.

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Jack is selling lemonade at a stand outside his house. He is charging $1.50 per cup. He needs to make at least enough money to cover the cost of his supplies, which were $15.25.What is the minimum number of cups of lemonade Jack needs to sell?

Answers

Given,

Charge of one cup of lemonade, c=$1.50

The amount Jack needs, T=-$15.25

The number of cups Jack needs to sell in order to have the given amount can be calculated as,

[tex]N=\frac{T}{c}[/tex]

On substituting the known values,

[tex]\begin{gathered} N=\frac{15.25}{1.5} \\ =10.17 \end{gathered}[/tex]

The number of cups of lemonade that can be sold should be a whole number. If Jack sells 10 cups, which is lesser than the answer, he will have less amount than he wanted.

Thus he has to sell 11 cups.

Therefore the minimum number of cups Jack needs to sell is 11.

Answer: I have all answers in screen shots

Hope this helps

Near the top of the Citigroup Center building in New York City, there is an object with mass of 4.00 ✕ 105 kg on springs that have adjustable force constants. Its function is to dampen wind-driven oscillations of the building by oscillating at the same frequency as the building is being driven—the driving force is transferred to the object, which oscillates instead of the entire building.(a) What effective force constant (in N/m) should the springs have to make the object oscillate with a period of 2.10 s? N/m(b) What energy (in J) is stored in the springs for a 1.80 m displacement from equilibrium? J

Answers

ANSWERS

(a) 3.58 x 10⁶ N/m

(b) 5.8 x 10⁶ J

EXPLANATION

Given:

• The mass of the object hanging from the spring, m = 4.00 x 10⁵ kg

Find:

• (a), The force constant the springs should have to make the object oscillate with a period of 2.10 s

,

• (b), The energy stored in the springs for a 1.80 m displacement from equilibrium.

(a) The period of an object in a spring is,

[tex]T=2\pi\sqrt{\frac{m}{k}}[/tex]

Where m is the mass of the object and k is the spring constant.

We want to find k for T = 2.10 s, so we have to solve this equation for k, which gives us,

[tex]k=m\cdot\left(\frac{2\pi}{T}\right)^2[/tex]

Replace the known values and solve,

[tex]k=4\cdot10^5\cdot\frac{4\pi^2}{(2.1)^2}\approx3,580,808.85N/m\approx3.58\cdot10^^6N/m[/tex]

Hence, the force constant is 3.58 x 10⁶ N/m.

(b) The energy stored in a spring with force constant k when the mass is displaced x meters from equilibrium is,

[tex]U_s=\frac{1}{2}kx^2[/tex]

Replace the known values and solve to find the energy stored in this spring,

[tex]U_s=\frac{1}{2}\cdot3.58\cdot10^6N/m\cdot1.8^2m^2\approx5.8\cdot10^6J[/tex]

Hence, the energy stored in the spring for a 1.80 m displacement from equilibrium is 5.8 x 10⁶ J.

Traumatic brain Injury such as concussion results when the undergoes very large acceleration Generally an than 800 m/s ^ 2 lasting for any length of time will not , whereas an acceleration greater than 1, 000 m/s ^ 2 for at least 1 injury. Suppose a small child rolls off a bed that is 0.47 m above the floor. If the floor is hardwood the child’s head is brought to rest in approximately 2.1 mm. If the floor is carpeted,this stopping distance is increased to about 1.3 cm . Calculate the magnitude and duration of the deceleration in both cases, to determine the risk of injury. Assume the child remains horizontal during the fall to the floor. Note that a more complicated fall could result in a head velocity greater or less than the speed you calculate. Hardwood floor magnitude m/s^2Hardwood floor duration msCarpeted floor magnitude m/s^2Carpeted floor duration ms

Answers

ANSWER:

Hardwood floor magnitude: 2193.15 m/s^2

Hardwood floor duration: 1.38 ms

Carpeted floor magnitude: 354.27 m/s^2

Carpeted floor duration: 8.56 ms

STEP-BY-STEP EXPLANATION:

We have the following information:

Distance of the bed from the floor: 0.47 m

Stopping distance by hardwood: 2.1 mm

Stopping distance by carpet: 1.3 cm

We must find the speed of the child when he hits the ground using the following formula:

[tex]v^2=u^2+2gh[/tex]

Where v is the final velocity, u is the initial velocity, g is the gravitational acceleration and h is the distance traveled.

Replacing and solving for v

[tex]\begin{gathered} v^2=0^2+2\cdot9.8\cdot0.47 \\ v=\sqrt[]{9.212} \\ v=3.035\text{ m/s} \end{gathered}[/tex]

We can find the deceleration provided by the hardwood when stopping the child using the formula:

[tex]v^2=u^2-2aS[/tex]

Since the child will stop, the final speed will be 0, the initial speed will be the speed gained by the child while falling that we found in the first step, and the distance S to stop is given in the question.

Replacing and solving for a:

[tex]\begin{gathered} 2.1\text{ mm }\cdot\frac{1\text{ m}}{1000\text{ mm}}=2.1\cdot10^{-3}m \\ 0^2=3.035^2-2\cdot a\cdot(2.1\cdot10^{-3}) \\ 2\cdot a\cdot(2.1\cdot10^{-3})=9.211 \\ a=\frac{9.211}{2\cdot(2.1\cdot10^{-3})} \\ a=2193.15\text{ }\frac{m}{s^2} \end{gathered}[/tex]

From the calculated deceleration, we can find the time it takes for the child to stop after hitting the hardwood using the formula:

[tex]\begin{gathered} v=u-at \\ \text{replacing and solving for t:} \\ t=\frac{v-u}{-a} \\ t=\frac{0-3.035}{-2193.15} \\ t=0.00138\text{ s} \\ t=1.38\text{ ms} \end{gathered}[/tex]

We repeat the same procedure but now with the data of the carpet, therefore:

[tex]\begin{gathered} 1.3\text{ cm }\cdot\frac{1\text{ m}}{100\text{ cm}}=1.3\cdot10^{-2}m \\ 0^2=3.035^2-2\cdot a\cdot(1.3\cdot10^{-2}) \\ 2\cdot a\cdot(1.3\cdot10^{-2})=9.211 \\ a=\frac{9.211}{2\cdot(1.3\cdot10^{-2})} \\ a=354.27\text{ }\frac{m}{s^2} \end{gathered}[/tex]

Time for stopping by the carpet:

[tex]\begin{gathered} t=\frac{v-u}{-a} \\ t=\frac{0-3.035}{-354.27} \\ t=0.00856\text{ s} \\ t=8.56\text{ ms} \end{gathered}[/tex]

Can you help me with this question? Find the sum of -2x^2 - 4x - 12 and - x^2 - 2x The answer I got was -3x^2 - 6x - 12 Just want to see if I did it correctly*Last tutor got disconnected

Answers

You have the following sum of expression:

(-2x^2 - 4x - 12) + (-x^2 - 2x)

In order to find the sum, simplify like terms (terms with the same variable and same exponent). Then, you have:

(-2x^2 - 4x - 12) + (-x^2 - 2x) =

-2x^2 - x^2 - 4x - 2x -12 =

-3x^2 - 6x - 12

Hence, the answer is -3x^2 - 6x - 12

The volume of a cylinder with height h and radius r can be found using the formula V = πr2hFind the volume of a cylinder with radius 8 feet and height 7 feet.__ ft3

Answers

In order to calculate the volume of this cylinder, let's use the given values of radius and height in the formula.

Using π = 3.1416, we have:

[tex]\begin{gathered} V=\pi r^2h \\ V=3.1416\cdot8^2\cdot7 \\ V=1.407.44 \end{gathered}[/tex]

So the volume is 1407.44 ft³.

You have been given 3.152 g of copper from which you are to fashion a wire whose resistance is 2,473.562 ohms. The density of copper is 8900 kg/m 3 and the resistivity of copper is 1.7 x 10 -8 ohm m. What will the diameter, in mm, of the wire be that you fashion?

Answers

Given:

Mass of copper, m = 3.152 g = 0.003152 kg

Resistance = 2,473.562 ohms

Density of copper = 8900 kg/m³

Resistivity of copper = 1.7 x 10⁻⁸ ohm.m

Let's find the diameter of the wire.

Apply the density formula to find the volume:

[tex]\begin{gathered} \rho=\frac{m}{v} \\ \\ v=\frac{m}{\rho}=\frac{0.003152}{8900} \\ \\ v=3.54*10^{-7}\text{ m}^3 \\ \\ (\pi r^2)l=3.54*10^{-7}\text{ m}^3 \end{gathered}[/tex]

Now, apply the formula:

[tex]\begin{gathered} R=\frac{\rho l}{A} \\ \\ l=\frac{RA}{\rho} \\ \\ l=\frac{2473.562*\pi r^2}{1.7*10^{-8}} \\ \\ \frac{l}{\pi r^2}=\frac{2473.562}{1.7*10^{-8}} \\ \\ \frac{l}{\pi r^2}=1.455*10^{11} \\ \\ l=1.455*10^{11}*\pi r^2 \end{gathered}[/tex]

Now, combine both expressions for L:

[tex]1.455*10^{11}*\pi r^2*\pi r^2=3.54*10^{-7}[/tex]

Solving further:

[tex]\begin{gathered} (\pi r^2)^2=\frac{3.54*10^{-7}}{1.455*10^{11}} \\ \\ (\pi r^2)=\sqrt{2.434*10^{-18}} \\ \\ \pi r^2=1.56*10^{-9} \\ \\ r^2=\frac{1.56*10^{-9}}{\pi} \\ \\ r=\sqrt{\frac{1.56*10^{-9}}{\pi}} \\ \\ r=2.228*10^{-5} \end{gathered}[/tex]

r is the radius.

We know that:

Diameter = 2 x radius

Thus, we have:

[tex]\begin{gathered} d=(2.228*10^{-5})*2 \\ \\ d=4.4569*10^{-5}\text{ m} \\ \\ d=0.044569*10^{-3}m \\ \\ d=0.0446\text{ mm} \end{gathered}[/tex]

Therefore, the diameter in mm will be 0.0446 mm

ANSWER:

0.0446 mm

The Round Up carnival ride below has a radius of 3.90 meters and rotates 0.527 times per second. As shown, riders can be held up by only friction. What coefficient of friction is needed to keep the riders from sliding down? Include units in your answer. Answer must be in 3 significant digits.

Answers

Given data:

* The radius of the carnival ride is r = 3.9 m.

* The linear frequency of oscillation is f = 0.527 Hz.

Solution:

The angular frequency (angular speed) of the oscillation is,

[tex]\begin{gathered} \omega=2\pi f \\ \omega=2\pi\times0.527 \\ \omega=3.31\text{ rad/s} \end{gathered}[/tex]

The frictional force acting on the ride is,

[tex]F=\mu mg[/tex]

The force acting on the ride in terms of the angular speed is,

[tex]F=m\omega^2r[/tex]

The frictional force acting on the ride is equal to the force acting on the ride for circular motion,

[tex]\begin{gathered} \mu mg=m\omega^2r \\ \mu g=\omega^2r \\ \mu=\frac{\omega^2r}{g} \end{gathered}[/tex]

where g is the acceleration due to gravity,

Substituting the known values,

[tex]\begin{gathered} \mu=\frac{(3.31)^2\times3.9}{9.81} \\ \mu=4.36 \end{gathered}[/tex]

Thus, the coefficient of friction is 4.36.

The picture below shows a skateboarder just before he drops down a ramp. Assume the skateboarder does not experience any friction.Which correctly shows the potential energy and kinetic energy of the skateboarder as he moves down the left side of the ramp and up to the top of the right side?

Answers

We are given that a skater is on top of a ramp. At this point the skater has the maximum gravtitaional potential energy "PE" and a minimum kinetic energy "KE". The gravitational potential enery depends on the height of the skater and the kinetic energy depends on his velocity.

When the skater is at the bottom of the ramp his gravitational potential energy is minimum since his height is the lowest and his kientic energy is maximum since all the gravitational potential eerngy has turn into kinetic energy. This means that at the lowest point the velocity is also maximum.

Whe teh sketer reaches the highest point in the right side his kinetic energy has converted again into gravitational potential energy since the height has increased. Now, the kinetic energy is minimum and the gravitational potential energy is maximum.

This can be seen represented next:

The graph should be a representation of the fluctuations in kinetic and potential energy, therefore, the only graph that represetns this is B.

b)= combined resistance of the 2 Ω and 4 Ω resistors connected in series

Answers

R1=6 Ω

R2=3 Ω

R3=2 Ω

R4=4 Ω

6 Ω and 3Ω resistances are connected in parallel.

First, find the equivalent resistance:

ER1 = R1*R2/(R1+R2)= 6*3/6+3 = 18/9 =

The resistances of 2 Ω and 4 Ω are connected in series:

TR2 = R3+R4 = 2 Ω+4 Ω= 6 Ω (b)

ER1 and TR2 are connected in parallel.

RT = ER1*TR2/ ER1+TR2= 2*6/2+6=12/8 = 1.5 Ω

Now, we can calculate the I (current)

On parallel circuits, Voltage is always the same. (12V)

But for series is VT=V1+V2

We have to find the current flowing across R3 and R4 (TR2)

V= I*R

I= V/R = 12/TR2= 12/6 = 2 A

With that current, we can calculate the voltage (potential difference) on R3 (2 Ω)

V=I*R= 2*2 = 4V (ai)

(aii) potential difference across the 3 Ω resistor

Since it is a parallel circuit , potential difference is always the same = 12V

b.combined resistance of the 2 Ω and 4 Ω resistors connected in series

R3+R4 = 2 Ω+4 Ω= 6 Ω (b)

Gamma rays require _____ to be stopped.1) paper2) glass3) aluminum4) lead

Answers

The gamma rays are having very large frequency. Thus, the energy acquired by the gamma ray photons is very large.

To stop the gamma ray, highly dense material is required.

The density of the lead is more than any other element in the given opitons.

Thus, the lead is used to stop the gamma rays.

Hence, 4th option is the correct answer.

Is science physics? If so I have a question on it

Answers

Inner Planets:

A planet whose orbit lies within the asteroid belt is called inner planets. Mercury, Venus, Earth and Mars are called th inner planets.

Outer Planets:

A planet whose orbit lies outside the asteroid belt is called outer planets. Jupiter, Saturn, Uranus and Neptune are called Outer Planets.

Other Questions
I need help find the answer to number 10 and 11 The local seven digit telephone numbers in city A have 207 as the first three digits. How many different telephone numbers are possible in City A? There are 221 6th graders in the HPS district that are going on field trip to the Detroit Institute of Arts when we get back to school. If each bus holds 46 students, how many buses should be hierd to transport us? use the formula for computing future value using compound interest to determine the value of an account at the end of 10 years if a principal amount of $10,000 is deposited in an account at an annual rate of 3% and the interest is compounded quarterly. The amount after ten years will be $_______ (round to the nearest cent as needed). A = P ( 1 + r/m) ^ n if Sarah has 98 baseball cards in her collection for birthday her she's given 78 new cards and she sold 108 cards how many baseball cards does Sarah have left Why are we not likely to have another "Cambrian Explosion"? Micah has an electricity plan where he is charged a monthly fixed rate of $3.18 and a usage fee of $0.14 per kilowatt-hour. In the equation below, x represents the amount of electricity he used, and y represents the amount Micah was charged for electricity. y = $0.14x + $3.18 If Micah was charged $143.18 for electricity last month, how much electricity did he use? A. 140 kilowatt-hours B. 45 kilowatt-hours C. 1,023 kilowatt-hours D. 1,000 kilowatt-hours Reset Submit How many cups are in 8 quarts? EXPLAIN FOR 5 STARS AND MORE why do engineers come up with as many ideas to solve a problem as possible? Which recovery equipment maintenance practice should be performed on a regularbasis L) Point A bisects CR. CA = 8x + 1 and AR = 6x+13.Find CA.34927 Polyploidy is the condition in which A. a piece of a chromosome breaks off and reattaches to another chromosome. B. an organism has an extra set of chromosomes. C. a mutagen speeds the mutation rate. D. an insect develops a resistance to a pesticide. Complete the article with the comparative form of the adjectives in brackets.Either ... or ?We ask singer and actress Sonia Haig to choose. Which is better ... ?Q: Singing or acting?A: Singing. Singing is easier (easy) for me than acting.Q: Healthy food or junk food?A: Junk food. I know healthy food is (good) for me, but after a concert all I want is a pizza or a hamburger and chocolate!Q: Relaxing on a beach or visiting an art gallery?A: Oh, visiting an art gallery because it's (interesting). Sitting on a beach is boring.Q: Dinner at a restaurant or dinner at home?A: That's a difficult question. I like cooking, but I like having dinner at a restaurant because it's (romantic) than eating at home.Q: Family or friends?A: Family. I'm (close) to my sister than to my friends and I phone my parents every day.Q: Summer or winter?A: Well, I love looking at snow ... but winter is (cold) and I prefer being hot. OK, summer.Q: New York or Paris?A: I love Paris, but I love New York more because it's (big) than Paris and I like all the shops. I have an apartment near Central Park.Q: Cats or dogs?A: Dogs. They're (friendly) than cats! how do I solve (-2+5i) (4-i) +(2-i) How can you plan your workday? there 3 cups of ketchup for every 1/2 cup of mustard what is the rate in cups of per ketchup per mustard Sowen rolled two number cubes with sides numbered 1 through 6, 20 times. Her sums are recorded in the table below.49899462.1012879111087935What is the experimental probability of rolling a sum of 9?4/205/20Od4/365/36 PLEASE HELP ASAP PLEASE!!!!!!!!! Convert the unit to the specified equivalent unit round your answer to at least1 decimal place if necessary Find the absolute change and the percentage change for the given situation.120 is decreased to 18