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Pavel [41]
3 years ago
15

When a the irregularities of one surface come into contact with those of another surface ,occurs

Physics
1 answer:
ser-zykov [4K]3 years ago
6 0
The answer to the question is friction
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Which of newtons laws explains why your hands get red when you press them hard against a wall
Andrei [34K]
Most likely Newton's 3rd law.
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3 years ago
A truck moving at 36 m/s passes a police car moving at 45 m/s in the opposite direction. If the frequency of the siren is 500 Hz
wariber [46]

Answer:

change in frequency is 636 Hz

Explanation:

given data

speed v1 = 36 m/s

speed v2 = 45 m/s

frequency f = 500 Hz

speed of sound s = 343 m/s

to find out

what is the change in frequency

solution

we know here change of frequency formula that is

frequency = \frac{s+v1}{s+v2} (f)   ...................1

put here value in equation 1

and we take v2 = -45 because opposite direction

frequency = \frac{s+v1}{s-v2} (f)

frequency = \frac{343+36}{343-45} (500)

frequency = 636

so change in frequency is 636 Hz

8 0
4 years ago
Two manned satellites approach one another at a relative speed of 0.400 m/s, intending to dock. The first has a mass of 5.50 ✕ 1
Aleksandr-060686 [28]

Answer:

why do you think the senate changed the way it voted? What methods did the suf

why do you think the senate changed the way it voted? What methods did the suffragis

why do you think the senate changed the way it voted? What methods did the suffragists use to influence this change?

Two manned satellites approach one another at a relative speed of 0.400 m/s, intending to dock. The first has a mass of 5.50 ✕ 103 kg, and the second a mass of 7.50 ✕ 103 kg. If the two satellites collide elastically rather than dock, what is their final relative velocity in meters per second?

hi

lolTwo manned satellites approach one another at a relative speed of 0.400 m/s, intending to dock. The first has a mass of 5.50 ✕ 103 kg, and the second a mass of 7.50 ✕ 103 kg. If the two satellites collide elastically rather than dock, what is their final relative velocity in meters per second?ts use to influence this change?

<h2>Two manned satellites approach one another at a relative speed of 0.400 m/s, intending to dock. The first has a mass of 5.50 ✕ 103 kg, and the second a mass of 7.50 ✕ 103 kg. If the two satellites collide elastically rather than dock, what is their final relative velocity in meters per second?</h2>

hi

lolfragists use to influence this change?

Explanation:

Two manned satellites approach one another at a relative speed of 0.400 m/s, intending to dock. The first has a mass of 5.50 ✕ 103 kg, and the second a mass of 7.50 ✕ 103 kg. If the two satellites collide elastically rather than dock, what is their final relative velocity in meters per second?

<h3><em><u>hi</u></em></h3>

<em><u>lol</u></em>

6 0
3 years ago
What is the period? Blank seconds.
FromTheMoon [43]

Answer:

Period refers to the time for something to happen and is measured in seconds/cycle

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Justin expends 600 W of power pushing a car 10 meters in 5 seconds. How much force must he exert
olganol [36]
The force he must exert is 300 N
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