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2 years ago

Help plzzz itz importannnttt

Physics

2 answers:

krok68 [10]2 years ago

4 0

Answer:

➢ ➢ ➢ ✔3. How did Nazis treat their enemies?✔3. How did Nazis treat their enemies?

notka56 [123]2 years ago

3 0

I dont know the answer but heres some eagles for good luck

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A forklift raises a 1,020 N crate 3.50 m up to a shelf. How much work is done by the forklift on the crate?

Anarel [89]

Hope this will help u..:)

8 0

2 years ago

Read 2 more answers

) A 1000 kg car travelling at 50 m/s slams into a 1500 kg parked truck in an inelastic manner as

solmaris [256]

(a)

KE = m v^2 / 2 = (1200 kg)(20 m/s)^2 / 2 = 240,000 J

(b)

The energy is entirely dissipated by the force of friction in the brake system.

(c)

W = delta KE = KEf - KEi = (0 - 240,000) J = -240,000 J

(d)

Fd = delta KE

F = (delta KE) / d = (-240,000 J) / (50 m) = -4800 N

The magnitude of the friction force is 4800 N.

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3 years ago

if you run around a circle at 4.5 m/s and the circle has a radius of 7.7 m, what is your centripetal acceleration?

madreJ [45]

Answer:

Centripetal acceleration,

$a_{c} =2.63\ m/s^{2} }$

Explanation:

Centripetal acceleration:

Centripetal acceleration is the idea that any object moving in a circle, in something called circular motion, will have an acceleration vector pointed towards the center of that circle.

Centripetal means towards the center.

Examples of centripetal acceleration (acceleration pointing towards the center of rotation) include such situations as cars moving on the cicular part of the road.

An acceleration is a change in velocity.

Formula for Centripetal acceleration:

$a_{c} =\frac{(velocity)^{2} }{radius}$

Given here,

Velocity = 4.5 m/s

radius = 7.7 m

To Find :

$a_{c} = ?$

Solution:

We have,

$a_{c} =\frac{(velocity)^{2} }{radius}$

Substituting given value in it we get

$a_{c} =\frac{(4.5)^{2}}{7.7} \\\\a_{c} =\frac{20.25}{7.7}\\\\a_{c} =2.629\ m/s^{2} \\\\\therefore a_{c} =2.63\ m/s^{2$

Centripetal acceleration,

$a_{c} =2.63\ m/s^{2} }$

7 0

2 years ago

What is an electromagnet

damaskus [11]

Answer:

An electromagnet is a magnet that uses electricity.

Explanation:

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2 years ago

A girl pushes a 60-kilogram box for a distance of 3 meters with a force of 4 Newtons into seconds. What is the power of the girl

irakobra [83]

Answer:

4 watt

Explanation:

Power (P)= 4 watt

3 0

3 years ago