Outline alpha, betta and gamma radiation in terms of depth of tissue penetration, ionizing effect and speed of radiation.

Answers

Answer 1

Penetration and Ionizing effect gamma, betta, and alpha radiation.

The speed of radiation is alpha, betta, and gamma radiation.

A gamma ray, also known as gamma radiation, is a penetrating shape of electromagnetic radiation arising from the radioactive decay of atomic nuclei. It consists of the shortest wavelength electromagnetic waves, typically shorter than the ones of X-rays.

Gamma rays have a lot of penetrating strength that several inches of dense material like lead, or maybe some feet of concrete may be required to forestall them. Gamma rays can skip absolutely through the human body; as they pass through, they are able to purpose ionizations that harm tissue.

These are a number of the most deadly radiation known. If a person happened to be close to a gamma-ray producing item, that they had been fried in an instantaneous. honestly, a gamma-ray burst should affect existence's DNA, inflicting genetic harm lengthy after the burst is over.

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Related Questions

Our galaxy, the Milky Way, contains approximately 4.0 x 1011 stars with anaverage mass of 2.0 X 1030 kg each. How far away is the Milky Way from ournearest neighbor, the Andromeda Galaxy, if Andromeda contains roughly thesame number of stars and attracts the Milky Way with a gravitational force of2.4 x 1030 N?

Answers

We will have the following:

First, we remember:

[tex]F=\frac{Gm_1m_2}{r^2}[/tex]

Then, from the problem we will have that:

[tex]2.4\ast10^{30}N=\frac{G(2.0\ast10^{30}kg)(2.0\ast10^{30}kg)}{r^2}[/tex][tex]\Rightarrow r^2=\frac{G(2.0\ast10^{30}kg)^2}{2.4\ast10^{30}N}\Rightarrow r\approx1.1116666667\ast10^{20}m[/tex]

So, the Andromeda galaxy is approximately 1.1*10^20 meters from the milky way.

The acceleration of the Andromeda galaxy towards the milky way is:

[tex]2.4\ast10^{30}N=(2.0\ast10^{30}kg)a\Rightarrow a=1.2m/s^2[/tex]

So, the acceleration towards the milky ways is 1.2m/s^2.

What is the momentum of a 0.144kg baseball thrown at a speed of 46m/s? Give your answer in kgm/s.

Answers

ANSWER:

6.624 kgm/s

STEP-BY-STEP EXPLANATION:

Given:

Mass (m) = 0.144 kg

Speed (v) = 46 m/s

We can calculate momentum using the following formula:

[tex]\begin{gathered} P=m\cdot v \\ \\ \text{ We replacing} \\ \\ P=0.144\cdot46 \\ \\ P=6.624\text{ kgm/s} \end{gathered}[/tex]

The momentum is 6.624 kgm/s

During a hockey game, two hockey players (m1 = 82kg and m2 = 76kg) collide head on in a 1 dimensional perfectly instant collision. If the first hockey player is moving to the left at a velocity 4.2 m/s and the second hockey player is moving in the opposite direction at a velocity of 3.4 m/s, how fast are they both moving after they collide, assuming they stick together after they collide? How much kinetic energy is lost as a result of the collision?

Answers

Given:

The mass of player 1 is m1 = 82 kg

The initial velocity of player 1 is

[tex]v_{i1}=\text{ 4.2 m/s}[/tex]

towards left.

The mass of player is m2 = 76 kg

The initial velocity of player 2 is

[tex]v_{i2}=\text{ -3.4 m/s}[/tex]

in opposite direction.

Required:

The final velocity after the collision assuming they stick together.

The loss of kinetic energy after collision.

Explanation:

According to the conservation of momentum, the final velocity will be

[tex]\begin{gathered} m1v_{i1}+m2v_{i2}=(m1+m2)v_f \\ v_f=\frac{m1v_{i1}+m2v_{i2}}{m1+m2} \\ =\text{ }\frac{(82\times4.2)-(76\times3.4)}{82+76} \\ =0.544\text{ m/s} \end{gathered}[/tex]

The loss in kinetic energy will be

[tex]\begin{gathered} \Delta KE=KE_{after}-KE_{before} \\ =\frac{1}{2}(m1+m2)(v_f)^2-\frac{1}{2}m1(v_{i1})^2-\frac{1}{2}m2(v_{i2})^2 \\ =\frac{1}{2}(82+76)(0.544)^2-\frac{1}{2}\times82\times(4.2)^2-\frac{1}{2}\times76\times(3.4)^2 \\ =23.38-723.24-439.28 \\ =-1139.14\text{ J} \end{gathered}[/tex]

Final Answer:

The final velocity after the collision assuming they stick together is 0.544 m/s.

The loss of kinetic energy after the collision is 1139.14 J.

A block of ice is sliding down a ramp of slope 40 to the horizontal. What is the rate of acceleration of the block? Assume the force of friction is not significant.

Answers

The given problem can be exemplified in the following diagram:

Since there is no friction or any other external force, the only force acting in the direction of the movement is the component of the weight of the block, therefore, applying Newton's second law:

[tex]\Sigma F=ma[/tex]

Replacing the values:

[tex]mg\sin 40=ma[/tex]

We may cancel out the mass:

[tex]g\sin 40=a[/tex]

Using the gravity constant as 9.8 meters per square second:

[tex]9.8\frac{m}{s^2}\sin 40=a[/tex]

Solving the operations:

[tex]6.3\frac{m}{s^2}=a[/tex]

Therefore, the acceleration is 6.3 meters per square second.

What is the escape speed (in km/s) from an Earth-like planet with mass 4.9e+24 kg and radius 70.0 × 105 m? Use the gravitational constant G = 6.67 × 10-11 m3 kg-1 s-2.

Answers

Answer:

The escape velocity = 9.66 km/s

Explanation:

The mass of the planet is represented by m

[tex]m=4.9\times10^{24}\operatorname{kg}[/tex]

The radius is represented by r

[tex]r=70.0\times10^5m[/tex]

The gravitational constant is represented by G

[tex]G=6.67\times10^{-11}m^3kg^{-1}s^{-2}[/tex]

The escape velocity (v) is given by the formula:

[tex]\begin{gathered} v=\sqrt[]{\frac{2GM}{r}} \\ v=\sqrt[]{\frac{2\times6.67\times10^{-11}\times4.9\times10^{24}}{70\times10^5}} \\ v=\sqrt[]{\frac{65.366\times10^{13}}{70\times10^5}} \\ v=\sqrt[]{0.9338\times10^8} \\ v=\sqrt[]{93380000} \\ v=9663.33\text{ m/s} \\ v=9.66\text{ km/s} \end{gathered}[/tex]

The escape velocity = 9.66 km/s

why short circuit are dangrous

Answers

Short circuits occur when a high-volume electrical current is passed through a low-resistance path that isn't meant to carry electricity. Short circuits occur when a live wire makes contact with a conductive object that it should not have.

The most dangerous aspect of a short circuit is that it will cause a sudden and dramatic change in electrical resistance. Electrical systems can cause a large amount of resistance and will be constantly sending electricity to different areas when appliances are plugged in or outlets are being used. This has the possibility to cause bodily harm and appliance damage to those who are using electrical appliances at the time a short circuit happens, and can also cause structural damage to your home through fires and burns

Wires with faulty or unstable connections will create a situation in which the electrical current can take a detour down an unintended path if it is the one of least resistance. This can be unpredictable, and the route that the current travels could be through flammable materials or a human being.

Short circuits are liable to cause fires, electrical burns, and electrocution. Stray electrical currents can also cause considerable damage to appliances and a home’s electrical system.

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please help me work through this, thank you for your time!

Answers

Given

The equation of the height is

[tex]h(t)=-16t^2+20t+950[/tex]

To find

The velocity when the stone reach the ground

Explanation

When the stone reaches the ground

[tex]\begin{gathered} h(t)=0 \\ \Rightarrow-16t^2+20t+950=0 \\ \Rightarrow16t^2-20t-950=0 \\ \Rightarrow t=\frac{20\pm\sqrt{20^2-(4\times16\times(-950)}}{2\times16} \\ \Rightarrow t=\frac{20\pm247.38}{2\times16}=8.35\text{ s} \end{gathered}[/tex]

Thus the time taken to reach the ground is 8.35s . (Here only the positive value is considered)

We know the velocity is the change in distance per unit time,

Thus,

[tex]\begin{gathered} v(t)=h^{\prime}(t) \\ \Rightarrow v(t)=-32t+20 \end{gathered}[/tex]

At t=8.35 s

[tex]\begin{gathered} v(8.35)=-32\times8.35+20 \\ \Rightarrow v(8.35)=-247.2\text{ feet/s} \end{gathered}[/tex]

Conclusion

The velocity is -247.20 feet/s

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Answer:

Thermal energy flows from the flask on the left to the flask on the right

Explanation:

As the flask on the left is hot water the temperature of it will be higher meaning that the metal bar will conduct the heat at a faster rate than the flask on the left. Due to this, the metal bar will gradually begin to increase in temperature slowly throughout the whole bar. This means that the heat will travel through the bar reaching tho whole flask.

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a clay ball (0.65kg) is thrown at a wall and sticks. The speed of the ball before hitting the wall was 15 m/s. It took 45 miliseconds for the clay to come to a stop and make contact with the wall. What was the average force the wall exerted on the wall during the collision?

Answers

In order to determine the average force the wall exerted on the ball, use the following formula:

[tex]F=\frac{\Delta p}{\Delta t}[/tex]

where

Δp: change in momentum

Δt: change in time = 45 ms = 0.045 s

F: force = ?

calculate the change in momentum as follow:

[tex]\Delta p=m\Delta v=(0.65kg)(15\frac{m}{s}-0\frac{m}{s})=9.75\text{ kg}\cdot\text{m/s}[/tex]

next, replace Δp and Δt into the formula for F:

[tex]F=\frac{9.75\text{ kgm/s}}{0.045s}=216.67N[/tex]

Hence, the average force exterded by the wall on the ball was approximately 216.67N

Anyone available for teaching me simple pendulum in physics

Answers

Simple pendulum is a device that has a periodic motion.

In periodic motion, the object repeats its path after an interval of time.

The simple pendulum can be drawn as

It has a simple bob connected to a fixed end through a massless string.

How far did a runner travel if they ran 3 mph for 30 minutes?

Answers

Given:

Speed = 3 mph

Time = 30 minutes

Let's determine how far(distance) the runner travelled.

To find the distance, apply the formula:

[tex]Dis\tan ce=speed\ast time[/tex]

Since the time is in minutes, let's convert to hours by dividing the time by 60 minutes.

Thus, we have:

[tex]\begin{gathered} D=3\ast\frac{30}{60} \\ \\ D=3\ast\frac{1}{2} \\ \\ D=1.5\text{ m} \end{gathered}[/tex]

Therefore, the runner travelled 1.5 miles

The Taipei Tower is a 508 meter, 101 story skyscraper. If you were to toss a orange of 0.13 kg off the top, how much kinetic energy would it have when it hits the sidewalk? Ignore air resistance .

Answers

Answer:

647.19 J

Explanation:

By the conservation of energy, the potential energy when you toss the orange is converted to kinetic energy when it hits the sidewalk, so

Ef = Ei

KE = PE

KE = mgh

Where m is the mass, g is 9.8 m/s², and h is the height of the Tower. Replacing m by 0.13 kg and h by 508 meters, we get

KE = (0.13kg)(9.8 m/s²)(508 m)

KE = 647.19 J

So, the orange would have 647.19 J of kinetic energy when it hits the sidewalk.

The example of a book falling off of a table shows a(n) _____.1) contact force2) scalar quantity3) absence of acceleration4) field force

Answers

anotherGravity is the force of attraction between two objects. A gravitational force field is modeled as space around a massive body in which other bodies experiences force.

In Newtonian gravity, a particle of mass M creates a gravitational force field around itself given as,

[tex]g=\frac{GM}{r^2}[/tex]

Here, G is the universal gravitational constant, and r is the separation between the bodies.

Hence, the example of a book falling off of a table shows a(n) field force. Therefore, option (4) is the correct choice.

Question 2
An object has a momentum of 500 kg mls. If its mass is 20 kg, its speed must be
O 25 m/sO 20 m/s50 m/sO 500

Answers

Given:

The momentum of the object is p = 500 kg m/s

The mass of the body is m = 20 kg

To find the speed of the object.

Explanation:

Speed can be calculated by the formula

[tex]\begin{gathered} p=mv \\ v=\frac{p}{m} \end{gathered}[/tex]

On substituting the values, the speed of the object will be

[tex]\begin{gathered} v=\frac{500}{20} \\ =25\text{ m/s} \end{gathered}[/tex]

Thus, the speed of the object is 25 m/s

Which of the following is the type of force that pulls objects towards the center of motion?A. Inertia B. MomentumC. AccelerationD. Centripetal

Answers

When an object is in a circular motion, the acceleration responsible for changing the direction of the movement is known as the centripetal acceleration:

This acceleration points towards the center of the circular motion.

Using the second law of newton, we can find the centripetal force Fc:

[tex]F_c=m*a_c[/tex]

Therefore the force that pulls objects towards the center of motion is the centripetal force.

Correct option: D.

What will be the effect of multiplying negative scalar number with a vector.. Explain with the help of drawing.

Answers

When we multiply a vector by a scalar number, each dimension of the vector will be multiplied by the number.

For example, multiplying the vector <3, 4> by 2 would create the vector <6, 8>.

But if this scalar is negative, the dimensions of the vector will change the signal:

vector <3, 4> multiplied by -2 creates the vector <-6, -8>.

This causes the original vector to change its direction to the opposite direction, that is, it flips 180°:

Which of the following is NOT a characteristic of average speed?elloa. Average speed includes both the rate of motion and its direction.b. Average speed is the rate of motion.C. Average speed is always a positive value.d. The greater the speed of an object the faster it moves.

Answers

The average speed is defined as the total distance traveled by an object divided into the time that it takes for the object to travel that distance.

Average speed is a scalar quantity, which means that it can be represented using a number with no need of specifying a direction. Since the total distance is a positive value, then average speed is always also a positive value.

From the options, the statement "aveage speed includes both rate of motion and its direction" is false.

Therefore, the answer is: Option A.

If a ball is thrown with an initial horizontal velocity of 2.3m/s, from a tall building, how far away from thebuilding does the ball land if it takes 4s to land?Referring to the ball above, how tall is the building? (2 sig figs)

Answers

Given,

The initial velocity of the ball, u=2.3 m/s

The time interval in which the ball hits the ground, t=4 s

As the ball was thrown horizontally, the angle of projection is θ=0°

The distance traveled by the ball in the horizontal direction is given by,

[tex]\begin{gathered} x=u_xt \\ \Rightarrow x=u\cos \theta\times t \end{gathered}[/tex]

Where uₓ is the x-component of the initial velocity.

On substituting the known values,

[tex]\begin{gathered} x=2.3\times\cos 0^{\circ}\times4 \\ =9.2\text{ m} \end{gathered}[/tex]

Therefore the distance traveled by the ball in the x-direction is 9.2 m. That is the ball landed 9.2 meters away from the building.

Applying the equation of the motion in the y-direction,

[tex]\begin{gathered} y=y_0+u_yt+\frac{1}{2}gt^2 \\ =y_0+u\sin \theta\times_{}t+\frac{1}{2}gt^2 \end{gathered}[/tex]

Where y is the final height of the ball which is zero meters, y₀ is the initial height of the ball, i.e., the height of the building, uy is the y-component of the initial velocity.

Let us consider that the upward direction is positive while the downward direction is negative. This makes the acceleration due to gravity, g, a negative value, and the height of the building a positive value.

On substituting the known values,

[tex]\begin{gathered} 0=y_0+2.3\times\sin (0^{\circ})\times4+\frac{1}{2}\times-9.8\times4^2 \\ \Rightarrow-y_0=0-4.9\times4^2 \\ y_0=78.4\text{ m} \\ \approx78\text{ m} \end{gathered}[/tex]

Therefore the height of the building is 78 m

What is the resistance of a lamp which draws 250 milliamperes when connected toa 12.6 volt battery

Answers

V = I*R

R = V / I

250 ma = 0.25 A

R = 12.6 / 0.25

R =50.4 ohm

A 5.0n force is applied to a 3.0kg ball to change its velocity from +9.”m/s to +3.0 m/s. The impulse on the ball is _I think it’s -18

Answers

Given,

The force is F=5 N.

The mass is m=3.0 kg

The velocities are 9 m/s to 3 m/s

The impulse is:

[tex]\begin{gathered} I=m(v_f-v_i) \\ \Rightarrow I=3(9-3) \\ \Rightarrow I=\frac{18kgm}{s} \end{gathered}[/tex]

The answer is 18 kgm/s

13 Dion is writing a survival guide for hikers who visit the nearby state park. Since the forest in the park is so dense, it is not unusual for hikers to get lost for days at a time before Dion and the other rangers can locate them. Dion creates a list of plant life that a lost hiker could eat to keep themselves going in an emergency. Which sentence will Dion MOST likely include about wild mushrooms? A. The forest floor in our park is very dense and wet so you will not find mushrooms to eat. B. If you look closely at the base of trees or fallen logs, you may find mushrooms to eat. C. It is best not to eat mushrooms that you find because some varieties are poisonous. D. Mushrooms must be heated to kill any harmful bacteria before they can be consumed.

Answers

Answer: C

Explanation: Some varieties of mushrooms are poisonous or may make you ill.

Resistances of 2.0 Ω, 4.0 Ω, and 6.0 Ω and a 24-V emf device are all in parallel. The current in
the 2.0-Ω resistor is

Answers

Answer:

The current in the 2.0 Ω resistor is 12 A

Explanation:

Given:

R₁ = 2.0 Ω

R₂ = 4.0 Ω

R₃ = 6.0 Ω

ξ = 24 V

______________

I₁ - ?

With parallel connection:

U₁ = U₂ = U₃ = ξ

Ohm's law:

I₁ = U₁ / R₁ = 24 / 2,0 = 12 A

Resistances of 2.0 Ω, 4.0 Ω, and 6.0 Ω and a 24-V emf device are all in parallel, the current in the 2.0-Ω resistor is 6 A.

The voltage across each resistor in a parallel circuit is the same, while the current divides among the different branches.

The sum of the currents passing through each resistor equals the total current flowing into the parallel circuit.

1/RTotal = 1/R1 + 1/R2 + 1/R3

1/RTotal = 1/2.0 Ω + 1/4.0 Ω + 1/6.0 Ω

1/RTotal = 3/12 Ω

1/RTotal = 1/4 Ω

RTotal = 4 Ω

Now,

I = V / RTotal

I = 24 V / 4 Ω

I = 6 A

Thus, the current in the 2.0-Ω resistor is 6 A.

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a ray of light hits a flat mirror with an incident angle of 39.20 degrees. What angle does it reflect at? (do not put in units)

Answers

Given

A ray of light hits a flat mirror with an incident angle of 39.20 degrees.

To find

What is the angle of reflection?

Explanation

According to the law of reflection,

The angle of incidence is equal to the angle of reflection.

Here the angle of incidence is 39.20 deg

So the angle of reflection is 39.20 deg

Conclusion

The angle of reflection is 39.20 deg

Write 8.0090 x 10^2 in standard form . (Example of standard form: 4550)Blank 1:

Answers

We are given the following number in scientific notation:

[tex]8.0090\times10^2[/tex]

To convert this number into standard form we will move the decimal point a number of times equal to the exponent of the ten. Since the exponent is positive we will move the point to the right, like this:

[tex]8.0090\times10^2=800.90[/tex]

Therefore, the standard form of the number is 800.90

The radioactive isotope 239Pu has a half-life of approximately 24100 years. After 2000 years, there are 5g of 239Pu.(1) What was the initial quantity? (Round your answer to three decimal places.) g Tries 0/99(2) How much of it remains after 20000years? (Round your answer to three decimal places.) g Tries 0/99

Answers

Using the following formula:

[tex]\begin{gathered} N(t)=N_o(0.5)^{\frac{t}{t_{1/2}}} \\ where: \\ N(t)=Remaining_{\text{ }}quantity_{\text{ }}after_{\text{ }}time_{\text{ }}t \\ N_o=Initial_{\text{ }}quantity \\ t=time_{\text{ }}in_{\text{ }}years \\ t_{1/2}=half-life=24100 \end{gathered}[/tex]

(1)

[tex]\begin{gathered} t=2000 \\ t_{1/2}=24100 \\ N(2000)=5g \\ so: \\ 5=N_o(0.5)^{\frac{2000}{24100}} \\ N_o=\frac{5}{(0.5)^{\frac{2000}{24100}}} \\ N_o\approx5.296 \end{gathered}[/tex]

(2)

Using the initial quantity calculated previously:

[tex]\begin{gathered} t=20000 \\ N(20000)=5.296(0.5)^{\frac{20000}{24100}} \\ N(20000)=2.979 \end{gathered}[/tex]

Answers:

For (1): 5.296

For (2): 2.979

One closed organ pipe has a length of 2.24 meters. When a second pipe is played at the same time, a beat note with a frequency of 1.1 hertz is heard. By how much is the second pipe too long? Include units in your answer.

Answers

ANSWER

0.07 m

EXPLANATION

First, we have to find the frequency that the first pipe would play,

[tex]\lambda=4L=4\cdot2.24m=8.96m[/tex]

The frequency is,

[tex]f=\frac{v}{\lambda}=\frac{343m/s}{8.96m}=38.28125Hz[/tex]

The frequency played by the second pipe is,

[tex]f=38.25125Hz-1.1Hz=37.18125Hz[/tex]

The wavelength of this note is,

[tex]\lambda=\frac{v}{f}=\frac{343m/s}{37.18125s^{-1}}\approx9.2251m[/tex]

So the length of the second pipe is,

[tex]L=\frac{\lambda}{4}=\frac{9.2251m}{4}\approx2.31m[/tex]

The difference between the pipes' length is,

[tex]2.31m-2.24m=0.07m[/tex]

Hence, the second pipe is 0.07 meters too long

Calculate the Mach number for sound given the temperature and the speeda. 332 m/s at 30°Cb. 340 m/s at -10°Cc. 6000 km/h at 13°Cd. 6000 km/h at -13°0

Answers

The Mach number indicates how many times a speed is greater than the speed of sound.

So, to find the Mach number, we just need to divide the speed by the speed of sound.

a) at 30°C, the speed of sound is 349 m/s, so we have:

[tex]\frac{332}{349}=0.95[/tex]

b) at -10°C, the speed of sound is 325 m/s, so we have:

[tex]\frac{340}{325}=1.05[/tex]

c) at 13°C, the speed of sound is 339 m/s. First, let's convert the speed from km/h to m/s:

[tex]\begin{gathered} 6000\text{ km/h}=\frac{6000}{3.6}\text{ m/s}=1666.67\text{ m/s} \\ \frac{1666.67}{339}=4.92 \end{gathered}[/tex]

d) at -13°C, the speed of sound is 323 m/s, so we have:

[tex]\frac{1666.67}{323}=5.16[/tex]

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Answer: Your answer will be D

Explanation:

Which of the following X-Y tables agrees withthe information in this problem?A puck moves 2.35 m/s in a -22.0° direction. A hockeystick pushes it for 0.215 s, changing its velocity to 6.42m/s in a 50.0° direction. What was the acceleration?A)хYYYC)хV 0.8802.18-0.8802.35-2.18ViVE4.134.92B)XVi2.35VE6.42a?Ax 0.2156.42> > 04.924.13a???Ax0.215ΔΧ??t0.2150.215tt 0.2150.215H

Answers

let's find the components for the initial velocity

[tex]v_ix=2.35\cdot\cos (-22)=2.18[/tex][tex]v_iy=2.35\cdot\sin (-22)=-0.88_{}[/tex]

then for the final velocity

[tex]v_fx=6.42\cdot\cos (50)=4.13[/tex][tex]v_fy=6.42\cdot\sin (50)=4.92[/tex]

The table that agrees with the problem is A)

Then for the acceleration, we will use the next formula

[tex]a=\frac{v_f-v_i_{}}{t}[/tex]

for the acceleration in x

[tex]a_x=\frac{v_fx-v_ix}{t}=\frac{4.13-2.18}{0.215}=9.06m/s^2[/tex]

then for the acceleration in y

[tex]a_y=\frac{v_fy-v_iy}{t}=\frac{4.92-(-0.88)}{0.215}=26.97m/s^2[/tex]

then we calculate the magnitude

[tex]a=\sqrt[]{9.06^2+26.97^2}=28.45\text{ m/s}^2[/tex]

The largest single publication in the world is the 1112-volume set of British Parliamentary Papers for 1968 through 1972. The complete set has a mass of 3,548 kg. Suppose the entire publication is placed on a cart that can move without friction. The cart is at rest, and a librarian is sitting on top of it, just having loaded the last volume. The librarian jumps off the cart with a horizontal velocity relative to the floor of 2.65 m/s to the right. The cart begins to roll to the left at a speed of 0.03 m/s. Assuming the cart’s mass is negligible, what is the librarian’s mass? Round to the hundredths.

Answers

ANSWER:

40.17 kg

STEP-BY-STEP EXPLANATION:

Given:

m1 = 3548 kg

V1 = -0.03 m/s

V2 = 2.65 m/s

We apply law of conservation of linear momentum:

[tex]\begin{gathered} P_i=P_f \\ P_i=0 \\ P_f=m_1\cdot V_1+m_2\cdot V_2 \end{gathered}[/tex]

We replace and calculate the mass as follows:

[tex]\begin{gathered} m_1\cdot V_1+m_2\cdot V_2=0 \\ 3548\cdot-0.03+2.65\cdot m_2=0 \\ -106.44+2.65\cdot m_2=0 \\ m_2=\frac{106.44}{2.65} \\ m_2=40.17\text{ kg} \end{gathered}[/tex]

Therefore the mass is equal to 40.17 kg

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