3 years ago

Which example best illustrates that light behaves like particles?

Physics

2 answers:

AlekseyPX3 years ago

8 0

I would say B. Because actual mass would ricochet off the sidewalk.

mr_godi [17]3 years ago

8 0

Answer:

B. Light bounces off a white cement sidewalk.

You might be interested in

What is the first step a scientist usually take to solve a problem?

trasher [3.6K]

Make prediction about what will happen certain circumstances

6 0

4 years ago

A satellite is orbiting the earth just above its surface. The centripetal force making the satellite follow a circular trajector

Pavlova-9 [17]

Answer:

$v=7905m/s$

$t=5063s$

Explanation:

A satellite is orbiting the earth just above its surface. The centripetal force making the satellite follow a circular trajectory is just its weight, so its centripetal acceleration is about 9.81 m/s2 (the acceleration due to gravity near the earth's surface). If the earth's radius is about 6370 km, how fast must the satellite be moving? How long will it take for the satellite to complete one trip around the earth?

The weight of the satellite is the centripetal force, so:

$W=mg=F_{cp}=ma_{cp}=m\frac{v^2}{r}$

Which means: $g=\frac{v^2}{r}$

We can calculate then the velocity:

$v=\sqrt{gr}=\sqrt{(9.81m/s^2)(6370000m)}=7905m/s$

For calculating how long will it take for the satellite to complete one trip around Earth we consider that the distance of the trip is the circumference of the orbit. This is calculated as $C=2\pi r$ .

Since velocity is v=d/t, we have:

$t=d/v=C/v=2\pi r/v=\frac{2\pi 6370000}{7905m/s} =5063s$

5 0

3 years ago

Carter pushes a bag full of basketball jerseys across the gym floor. The he pushes with a constant force of 21 newtons. If he pu

myrzilka [38]

Power is the rate of work that is done per time. Work is calculated from the product of force and the displacement. So, by using the definition of power and work, we can relate power with force, displacement and the time. We do as follows:

Power = Work / time
Power = Force x displacement / time
Power = 21 N (9 m) / 3 s
Power = 63 J /s = 63 W

6 0

3 years ago

Determine the force the sun exerts on an object with a mass of 80.0 kg if that object is on the earth. What is the force exerted

MrRissso [65]

he has to read a tripple beam balence and mesure the pltates

3 0

3 years ago

Read 2 more answers

The number of wave cycles that pass in one second is called the _______ of the wave.

postnew [5]

That is the frequency.

6 0

3 years ago

Read 2 more answers