a baseball is thrown from center field to home plate where it is caughe by the catcher. at what point in its travel is the magnitude of the baseball's accelration at a minimum?

The Earth bound infrared telescopes are located on the high mountain tops and in very dry climates to improve visibility.

Infrared telescopes are used to explore the structure of galaxies because it has the ability to use infrared light in detecting celestial bodies present in a galaxy. It makes use of the electromagnetic radiation emitted by these bodies that are detected and resolved by the instrument.

Infrared rays are absorbed by the water vapour in the lower parts of our atmosphere such as near the sea level. Infrared telescoped positioned on high mountains can observe the cosmos at a wavelength near-infrared. In this case, this telescope is positioned on a mountain top where the altitude is high.

To know more about infrared telescopes:

https://brainly.com/question/15375782

#SPJ4

Answer:

a & b

Explanation:

Answer:

Sound travels better through the compact molecules of air inside the balloon than the less compact molecules on the outside.

Explanation:

172 joules work is done on a bookshelf being pulled 5 m at an angle of 37o from the horizontal.

Work = Force * times *distance

we will use the component of the force in the direction of the distance

In this problem, let’s say the distance (5.00 m) is horizontal. The horizontal component of the force is  Fcosθ

W=(Fcosθ)(D)

or

W = (43.0)(cos37.0)(5.00)

= 172Nm

=  172 Joules

To know more about horizontal component click here:

https://brainly.com/question/5923576

#SPJ4

When a slope breaks, there is mass wasting. When a slope is excessively steep and unstable given the materials and environmental factors at play, it fails. The slope angle and the underlying material's strength are the two main criteria that eventually influence slope stability.

Slope failures are categorized according to three factors:

The material that collapsed, its mechanism of failure (how the material moved while failing), and its pace of movements, such as bedrock or loose sediment (how quickly the material moved).

The most crucial feature of a slope collapse is the failure mechanism. The three primary mechanisms of slope failure are as follows:

When anything falls, it travels through the air vertically or almost vertically.

Slide: In slides, the substance slides along a sloping surface as a cohesive mass (with little to no internal motion inside the substance); and

Flow: Inflows, the failing substance moves within, much like a fluid.

To know more about MASS WASTING :

brainly.com/question/12297197

#SPJ4

Given wavelength λ=435λ=435 nm, we can find the frequency by using the formula f​=c​/λ                  f=6.89×1014 Hz

The area of space surrounding any electrically charged particle and object where the charge body perceives force is known as the electric field.Examples are:Charges and their arrangements, such as in capacitors and battery cells, produce electric fields.

Volts / metre (V/m) is the electrical field's SI unit.The Newton's per coulomb unit is the same as this one.These units are derivations from Newton, which stands for force, and Coulomb, which stands for charge.

To know more about electromagnetic wave visit:

https://brainly.com/question/29774932

#SPJ4

The image E for dilation will be at center , i.e. same locus.

A scaling factor is a factor that enlarges or shrinks the dilated image compared to the original image. Magnification must be positive. If the scale factor is greater than 1, the stretch is an enlargement. Between 0 and 1, dilation is contraction.

The dilation center (or dilation point) is the point at which the image is stretched.

Given: (0,0) center and scale factor 6

Dilation is to transform an image from its original

size to another size without changing its appearance/shape.

Original image is stretched or compressed. The scaling factor is the amount by which the original image is stretched or shrunk.

For example, if A is the point (1, 2) and the scale factor is 2, the center of elongation is given by

OA= (1x2, 2x 2) = (2, 4)

To find the new point, multiply the origin by the scale factor.

Ox 6 = 0, so the specified point (O, O) remains at (0, 0).

The dilated image does not change because the center does not change.

To learn more about Magnification -

https://brainly.com/question/28609945

#SPJ4

(a) The width (in mm) of the central interference maximum is [tex]8.0mm[/tex].

(b) The width of the first-order bright fringe is [tex]8.0mm[/tex].

fringe width = w=D/d λ  is the wavelength of light

D is the screen distance from the slit

d is a separation between slits

Constructive interference,

⇒dsinθ = n ×λ

⇒sinθ = [tex]\frac{n}{d}[/tex] ×λ

⇒ y = R [tex]\frac{n}{d}[/tex] ×λ ............(1)

here n= 0, ±1 , ........

the width of the central interference maximum,

⇒[tex]y_{max}[/tex] = R λ× [tex]\frac{1}{d}[/tex] = [tex]\frac{4,0m}{0,2mm}[/tex] ×[tex]400nm[/tex]

⇒[tex]y_{max}[/tex] = [tex]8.0mm[/tex]

the width of the first-order bright fringe.

⇒[tex]y_{1}[/tex] - [tex]y_{0}[/tex] = [tex]\frac{R}{d}[/tex]×λ -0 = [tex]\frac{4,0m}{0,2mm}[/tex] ×[tex]400nm[/tex]

⇒[tex]y_{1}[/tex] = [tex]8.0mm[/tex]

In physics, wave assets are coherent if their frequency and waveform are equal. Coherence is an excellent asset of waves that enables stationary (i.e., temporally, or spatially constant) interference. It contains numerous awesome concepts, that are proscribing cases that never pretty arise in fact however permits knowledge of the physics of waves, and has grown to be a very essential idea in quantum physics. more generally, coherence describes all homes of the correlation among physical quantities of a single wave, or between several waves or wave packets.

Interference is the addition, in the mathematical experience, of wave features. A single wave can interfere with itself, but this is nevertheless an addition of two waves (see younger's slits experiment). optimistic or unfavorable interference is restricted cases, and two waves continually intervene, despite the fact that the result of the addition is complex or now not amazing. while interfering, two waves can add collectively to create a wave of more amplitude than either one (optimistic interference) or subtract from each difference to create a wave of lesser amplitude than both (negative interference), relying on their relative section.

Two waves are said to be coherent in the event that they have a consistent relative phase. the amount of coherence can effectively be measured through interference visibility, which looks at the dimensions of the interference fringes relative to the enter waves (as the section offset is numerous); a specific mathematical definition of the diploma of coherence is given with the aid of correlation capabilities.

To learn more about Coherence visit here:

brainly.com/question/14264231

#SPJ4

The frequency of oscillator is 1.83 X 10⁷ Hz and the kinetic energy of the proton is 1.72 X 10⁷ eV.

(a)

Radius of the circle = r = 0.500 m

Magnetic Field = B = 1.20 T

Charge of proton = q = 1.60 X 10⁻¹⁹ C

Mass of proton = m = 1.67 X 10⁻²⁷ Kg

The frequency of oscillator is = f =

= f = 1/t = (qB) / 2πm

= f = ( 1.60 X 10⁻¹⁹ X 1.20 ) / ( 2 X 3.14 X 1.67 X 10⁻²⁷)

= f = 1.83 X 10⁷ Hz

(b)

Radius of the circle = r = 0.500 m

Magnetic Field = B = 1.20 T

Charge of proton = q = 1.60 X 10⁻¹⁹ C

Mass of proton = m = 1.67 X 10⁻²⁷ Kg

The kinetic energy of proton = E =

= E = (r X q x B)² / 2 X m

= E =  (0.500 X 1.60 X 10⁻¹⁹ x 1.20)² / 2 X 1.67 X 10⁻²⁷

= E = 1.72 X 10⁷ eV

To know more about Cyclotron:

https://brainly.com/question/13004287

#SPJ4

The acceleration traveling down the hill is 2.571 m/s^2.

Given:

initial speed (U)=3.5 m/s

Final velocity(V) =8.6 m/s

Distance covered(s)= 12 m.

Formula : (V)^2=(U)^2+ 2as

                 (8.6)^2 =(3.5)^2+2*a*12

                   a=2.571 m/s^2

velocity is the directional velocity of a moving item as an indicator of the price of trade of role observed from a particular frame of reference and measured by a specific time fashionable.

Acceleration in mechanics, acceleration is the rate of alternate of an item's pace with respect to time. Acceleration is a vector amount. The direction of an object's acceleration is given with the aid of the route of the net force performing on that object.

Learn more about acceleration and velocity:

https://brainly.com/question/1192983

#SPJ4

The lens will form real image that can be focused screen.

As air has less optical density than water, and the shape of air lens is concave, it would act as converging lens when placed in water. And hence it can form a real image that can be focused on a screen.

The behavior of lens can be justified by calculating the focal length. For concave lens R1 is negative and R2 is positive.

Since, focal length is positive and behave as converging lens and forms the real image.

Learn more about real image here:- https://brainly.com/question/3804988

#SPJ4

The kinetic energy of the sports car is 630 KJ.

The kinetic energy is the energy possessed by the system by virtue of its motion.

KE = ΔW

Where,

m = mass of the object

v = speed at which the object is moving

Mass of the car = 1400 Kg

Velocity of the car = 30 m/sec

KE = (1/2)*1400*(30)²

KE = (1/2)*1400*900

KE = 630000 J

KE = 630 KJ

The kinetic energy of a 1400 kg sports car travelling down the road with a speed of 30 m/s 630 KJ.

To know more about kinetic energy,

https://brainly.com/question/6680814

#SPJ4

Most of the polarized light will pass through the angle of cos²30°.

When this unpolarized light passes through a polarizer, the intensity of light reduces to half =Io/2 and this light becomes polarized.

Polarization refers to a situation in which light is made to vibrate in a single direction.

What is polarization?

Let us note that polarization refers to a situation in which light is made to vibrate in a single direction.

The intensity of the light that passes through the depolarizers depends on cos θ²

where θ is the difference between the angles of polarizer's alignment

For the first configuration, θ = 90° - 60° = 30°

cos²30° = 0.75 is greater than cos²60° and cos²45°

Therefore, most of the polarized light will pass through the angle of cos²30°.

To know more about polarized, refer: https://brainly.com/question/14420902

#SPJ4

The true statement is truck B will have a greater stopping distance because its speed is greater hence more distance to cover.

The equation of kinetic energy is:

½ mv²

So, the higher the speed/velocity of a moving object, the greater the energy it has.

The question was incomplete, there should be several options :

The answer is truck B will have a greater stopping distance than truck A, because its speed is greater hence more distance to cover.

Truck B also will have greater kinetic energy because it has more velocity.

Learn more about kinetic energy here: https://brainly.com/question/29632137

#SPJ4

The big bang could able to produce only the highest heavier element helium due to very low temperature.

Big Bang nucleosynthesis produced only a few nuclei of factors heavier than lithium because of a bottleneck, the absence of a strong nucleus with eight or five nucleons. This deficit of large atoms additionally restricted the quantities of lithium-7 produced for the duration of BBN. In the early universe, it becomes too warm for factors to shape till numerous mins into the expansion. At that point, there have been just a few mins in which factors ought to shape earlier than it has become too cool for in addition nucleosynthesis. Thus the heavier element produced by the big bang explosion is helium

Learn more about the big bang in

https://brainly.com/question/29665624

#SPJ4

The minimum amount of time Brandon needs to reacha point 250m downstream is 97.20 seconds.

Please refer to the picture bellow for better  understanding.

From the case, we have some informations such:

river wide = 80 m

river length = 250m

v1 = v swim = 2 m/s

v2 = v run = 4 m/s

Using the velocity formula, we know the relationship between velocity, distance, and time is:

v = s/t

where:

v = velocity

s = distance

t = time

Hence, we could rewrite the velocity formula in terms of time such:

t = s/v ... (i)

Now, let's try to find the time Brandon needs for swimming diagonally.

We assume that Brandon's swimming distance is r with wide 80m and length x m. Hence:

r = [tex]\sqrt{80^{2} +x^{2} }[/tex] ... (ii)

The time Brandong spends swimming is:

t1 = s1/v1

t1 = r/v1

t1 = √(80²+x²) ... (iii)

             2

Meanwhile the time Bradon spends for running is:

t2 = (250-x)/4 ... (iv)

We know that the total time would be:

t total = t1 + t2

t total =  √(80²+x²) + 250 - x

                     2                   4

To find the minimum time, we will use derivative function of t:

t total' = 0

d (√(80²+x²) + 250 - x ) dx = 0

          2                    4

        x           -  1    = 0

2[√(80²+x²)]     4

      2x       = 1

√(80²+x²)

2x = √(80²+x²)

4x² = 80² + x²

x ≈ 46.2m ... (v)

We will subtitute the value of x to the equations (iii) and (iv):

t1 = √(80²+x²) / 2

t1 = 92.4 / 2

t1 = 46.25s

t2 = (250-x) /4

t2 = 203.8 / 4

t2 = 50.95s

The minimum amount of time for Brandon to reach his targeted point is:

t total = t1 + t2

t total = 46.25 + 50.95

t total = 97.20 s

Learn mroe about Minimum Amount of Time here: https://brainly.com/question/1511322

#SPJ4

The work done by the gas for question A will be 4.2 * 10^5 J.

The change in internal energy of the gas for question B is 6.43 * 10^5 J.

For a gas, it is the product of the pressure P and the volume V during a change of volume. The formula for work done in gas is W (work) = P (pressure) * V (volume)

Now, let's calculate the work done by gas to answer question A.

Work = Pressure * (Volume 2 - Volume 1)

= 1 atm * (16.2 - 12)

= 10^5 Pa * 4.2

= 4.2 * 10^5 J

So the work done by the gas is 4.2 * 10^5 J.

Now, let's find the change in internal energy of the gas.

The heat energy added to the system is

Q = 254kcal

= 254kcal * (4184J / 1 kcal)

= 1.063 * 10^6 J

The change in internal energy of gas is

ΔU = Q (the heat energy added) - W (work done by gas)

= 1.063 * 10^6 J - 4.2*10^5 J

= 6.43 * 10^5 J

Therefore, the change in internal energy of the gas is 6.43 * 10^5 J

Learn more about work (in gas) https://brainly.com/question/29589757

#SPJ4

The phase angle in an RLC series circuit is determined by the source frequency.

The capacitor dominates the impedance at extremely low frequencies, and the phase angle is around$ - {90^o}C$. The inductor dominates the impedance at very high frequencies. The RLC series circuit is a very important example of a resonant circuit. It has a minimum of impedance Z=R at the resonant frequency, and the phase angle is equal to zero at resonance. The resonance of a series RLC circuit occurs when the inductive and capacitive reactances are equal in magnitude but cancel each other because they are 180 degrees apart in phase. The sharp minimum in impedance which occurs is useful in tuning applications.

To learn more about rlc circuit click here

brainly.com/question/29649302

#SPJ4

The final velocity of the cheetah is 23 m/s.

Acceleration, then, is the alteration in that velocity. As you maintain or increase speed, acceleration moves in the same direction as velocity. The direction of velocity is in this. While you are retaining or gaining speed, you are accelerating in this direction. An object is accelerating if its velocity is changing, whether by a fixed amount or a variable quantity. Additionally, an item moving at a constant speed is not accelerating. The rate at which velocity varies is known as acceleration. In other words, accelerating. Increasingly, decreasingly, and in a different direction.

A vectorial quantity with both magnitude (speed) and direction is velocity. I can answer your question by using the example of uniform circular motion. In this example, the speed is constant, but the direction is constantly shifting.

Given u = 18m/s

a = 1 m/s^2

t = 5 sec

v = final velocity

We know that according to equation of motion

v = u + at

v = 18 + 1 x 5 = 18 + 5 = 23 m/s

Th final velocity of cheetah is 23m/s.

To know more about final velocity refer:

https://brainly.com/question/28608160

#SPJ4

The Non-coulomb electric field curls will be counterclockwise

Electric field can be defined as force per unit charge.

Non columbic field formula is

Fnc = qEnc

It is created by a change in magnetic field.

when the magnetic field near the ceiling point is increasing, the non coulomb force will curl counterclockwise by applying right hand thumb rule.

To know more about non- coulomb electric field,

https://brainly.com/question/29574093

#SPJ4

The best activity for her to do to improve her range of motion is flexibility.

The term the range of motion (ROM) describes the extent to which a joint or muscle may be moved or stretched. Everybody has a distinct experience. For instance, whereas some people can perform a complete split, others cannot because their joints are stiff and their muscles are unable to extend as far.

A joint is said to have a restricted range of motion when it cannot move easily and completely in its typical position. A mechanical issue within the joint, swollen tissues around the joint, or pain may restrict motion.

To knoiw more about range of motion visit:

https://brainly.com/question/13403291

#SPJ1

As a head-up, it is important to notice that a white dwarf only shine to the stored energy and light, because a white dwarf doesn't have any hydrogen left to perform nuclear fusion.

Now, the process:

First, the white dwarf accumulates all the extracted matter from its companion onto its own surface. This extra matter increases the white dwarf's temperature and density.

After a while, the start reaches about 10 million K, so nuclear fusion can begin. The hydrogen that has been stolen from the other start and accumulated in white dwarf's surface it is used for the fusion, dramatically increasing the star's brightness for a short time, causing what we know as a nova.

As this fuel, it is quickly burnt out or blown into space, the star goes back to its natural white dwarf state. Since the white dwarf nor the companion star are destroyed in this process, it can happen countless of times during their lifespan.

To know more about nova:

https://brainly.com/question/14527789

#SPJ4

A flight attendant pushes a cart down the aisle of a plane in flight. in determining the acceleration of the cart relative to the plane, The velocity of the plane, need to consider.

The pace at which a distance changes over time is referred to as speed. It has a dimension of time-distance. As a result, the fundamental unit of time and the basic unit of distance are combined to form the SI unit of speed. Thus, the meter per second (m/s) is the SI unit of speed. Let us suppose a flight attendant pushes a cart down the aisle of a plane in flight with a force (F) in Newton respectively. Also acceleration of the cart relative to the plane.

Therefore the only factor will be in consideration that will be velocity because we will be neglecting all other factors such as air resistance, relative plane etc.

Hence option (c) will be the correct answer: The velocity of the plane.

To know more about acceleration refer to:

https://brainly.com/question/460763

#SPJ4

The clock runs slower on moon than on earth.

As we know that time period of simple pendulum will be

T = 2π√(L/G)

Now we will have,

time period of a clock on the surface of earth will be 1 s where we have acceleration due to gravity is g = 9.8 m/s².

Now if we took the pendulum to the surface of moon where acceleration due to gravity will be 1.65 m/s² then this time period will change

so we will say by above equation;

T(earth)/T(moon) = √(G(moon) / G(earth)

From above equation we get;

T(moon) = √(9.80/1.65) * 1 sec

T(moon) = 2.44 sec

So, time period on moon will be 2.44 sec.

Therefore, clock runs slow on the moon.

To learn more pendulum visit;

https://brainly.com/question/29183311

#SPJ4

index of refraction (n) = 1.20 wavelength = 4 cm

What is wavelength radar?

Radar used to measure wind waves is called wave radar. There are several instruments available that are based on various ideas and methods, and they are all frequently termed.

In situations where it's critical to avoid direct contact with the water surface and structural interference, instruments based on radar remote sensing techniques have grown in popularity. Wave measurements from an offshore platform in deep water are an example of a situation where anchoring a wave buoy would be extremely challenging due to rapid currents. Another intriguing situation is that of a ship in motion, where it is extremely impracticable to have equipment in the sea

According to the question:

using the formula for minimum thickness of coating to inhibit reflection: thickness = λ4 thickness = 4 cm

4×1.20 thickness = 0.833 cm

To know more about wavelength radar:

https://brainly.com/question/14595311

#SPJ4

wavelength = 4 cm index of refraction (n) = 1.20

What exactly is wavelength radar?

Wave radar is a type of radar that is used to measure wind waves. There are several instruments available that are based on diverse concepts and methodologies, and they are all often referred to.

Instruments based on radar remote sensing techniques have increased in popularity in circumstances where it is vital to avoid direct contact with the water surface and structural interference. Wave measurements taken from an offshore platform in deep water are an example of a circumstance in which mooring a wave buoy would be exceedingly difficult owing to strong currents. Another fascinating circumstance is that of a ship in motion, when having equipment in the sea is exceedingly impractical.

Using the formula for minimal coating thickness to reduce reflection: 4 is the thickness 4 cm thickness

4x1.20 mm thick = 0.833 cm

To learn more about wavelength radar follow the given link: https://brainly.com/question/13152538

#SPJ4

The ratio of escape velocity of Helium, Argon   and  Xenon  is 31.5 %, 10.0 % and 5.5 % respectively.

Calculation:-

taking T = 2000 K and R = 8.315 J mol-1 K-1

Molar mass for Helium = 4.0026 x 10?3 kg mol-1

Molar mass for Argon   = 39.948 x 10?3 kg mol-1

Molar mass for Xenon  = 131.29 x 10?3 kg mol-1

We get the rms speed for the given gases as followed

Helium =  3.53 km s-1

Argon   = 1.12 km s-1

Xenon  =  0.62 km s-1

The ratio of the escape velocity to the root-mean-square speed of the given gases

The ratio of helium = 31.5 %

The ratio of argon  = 10.0 %

The ratio of xenon = 5.5 %

Yes, the fraction (or ratio) of the speed exceeding the escape velocity (31.5%) is larger in helium, which makes low abundancy of the helium in the atmosphere.

Learn more about escape velocity here:-https://brainly.com/question/16973068

#SPJ4

Internal energy of a system is the product of specific heat and temperature included with number of moles. (i=nCT) and kinetic energy is product of Boltzmann constant and temperature.

Internal energy is the sum of two energies:

(a) Thermal energy, which is the kinetic energy of molecules in random motion, and

(b) Potential energy of atoms.

To learn more about Internal energy -

https://brainly.com/question/11623849

#SPJ4

Answer: Unbalanced forces

Explanation: When the forces acting on an object are unbalanced, they do not cancel out one another

The power of the flash is   [tex]2.36 * 10^{-9} W[/tex].

First we calculate the energy of a single photon; i.e.

[tex]E_{1} = hc/\alpha[/tex]

where, h = planck's constant = [tex]6.63 * 10^{-34} Js[/tex]

            c = speed of light = [tex]3 * 10^{8} m/s[/tex]

            [tex]\alpha[/tex] = wavelength = 490 nm = [tex]4.9 * 10^{-7} m[/tex]

Putting these values in equation, we get

[tex]E_{1} = 4.05 * 10^{-19} J[/tex]

Total energy is given by, E=Pt

where, P = power and t= time

Now number of photons is given by : N = E/[tex]E_{1}[/tex]

⇒ [tex]NE_{1} = E[/tex]

⇒ [tex]NE_{1} /t = P[/tex]

Given, N = [tex]1.4*10^{10}[/tex] and t = 2.4 s

Putting these values in above equation we get P = [tex]2.36 * 10^{-9} W[/tex]

To know more about work-energy visit:

https://brainly.com/question/12674783?

#SPJ4

If the stopping distance for a speed (velocity) 20mph is 100ft, then the stopping distance for a speed (velocity) 40mph is 400ft.

It defines the direction of the movement of the body or the object. The velocity of a moving object can be zero. Speed is a prime indicator of the rapidity of the object. Velocity is the prime indicator of the position as well as the rapidity of the object.

How to calculate the stopping distance when the speed (velocity) is 40mph?

Given from the question
V₁ = 20mph = 29.334ft / s

S = 100ft Now, let's use the equation of motion

v² - u² = 2as
Where

v = final velocity = 0 (because the car is stopped)

u = initial velocity

a = acceleration (negative if slowing down)

s = distance moved

0 - 29.334² = 2 * (-a) * 100

-860.483556 = - 200a

a = 4.302 ft / s²

Now, when velocity is 40mph, equal to 58.6667 ft/s

using the same equation

v² - u² = 2as

0 - 58.6667² = 2 * (-4.302) * s

-3441.78168889 = - 8.604 * s

s = 400feet (rounded)

Therefore, if you were increase your speed to 40 miles per hour, your stopping distance will be 400 feet.

Learn more about velocity https://brainly.com/question/19979064

#SPJ4