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3 years ago

Explain whether there can be forces act-

1 answer:

5 0

Technically friction is acting on the car because it is still rubbing against the street and gravity is pulling the car down preventing it from floating??? lol

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JUST PLZ HELP!!! Why does the lightbulb in the right electrical circuit turn on but not the one on the left?

makkiz [27]

Because,

In left image pin is not touch to the wire.

In right image pin is touch to the wire.

Hope it helps you.....

Plz...Plz...Plz...Plz…Plz…

Mark be Brainliest.....

Please.....

And..

Please thanks me.....

Plz.....Plz.....

8 0

3 years ago

Read 2 more answers

A baseball has a mass of 0. 45 kg and is thrown with a speed of 25 m/s. What is the momentum of the baseball? 0. 018 kg â€˘ mete

aleksandr82 [10.1K]

Answer:

11 Kg.m/s

Explanation:

P=mv

P=0.45*25

P=11.25 Kg.m/s

3 0

2 years ago

A bungee-jumping company operates on a bridge 200 m above the ground. They use bungee cords that are 100 m when they are unstret

zubka84 [21]

Answer:

m = 63.7 kg

Explanation:

As we know that when mass connected to the bungee cord stretch the string then the gravitational potential energy of the person will convert into potential energy of the string at the end

now here we know that when person jump from the top and reach at the end then loss in gravitational potential energy is given as

$U = mgH$

$U = m(9.81)(200)$

$U = 1962 m$

now when it is at the end of the motion stretch in the string will be

$x = 200 - 100 = 100 m$

now potential energy of string is given as

$U_{spring} = \frac{1}{2}kx^2$

$U_{spring} = \frac{1}{2}(25)(100^2)$

now by energy conservation we have

$1962 m = \frac{1}{2}(25)(100^2)$

$m = 63.7 kg$

6 0

3 years ago

Which of the following is a characteristic of electromagnetic waves? (2 points)

muminat

Answer:

c They can only travel without a medium.

Explanation:

Electromagnetic waves are made up of electric field and magnetic field.

Here electric field will induce magnetic field and magnetic field will induce electric field.

So this type of field do not require any medium and in vacuum or air the speed of electromagnetic waves are same as speed of light

$c = 3 \times 10^8 m/s$

also we have different range of electromagnetic waves out of which a small range of electromagnetic waves is of visible region in which these waves are visible to us.

so correct answer is

c They can only travel without a medium.

3 0

4 years ago

Read 2 more answers

Before Sam left for work, he noticed that his car was covered with snow and so went out and started the engine to let it warm up

meriva

The question before or after this one on your homework has something to do with airplanes. These answer choices belong with that airplane question. They're not the choices for the snowy-car question. None of them is the correct answer.

You'll want to look for a set of choices that might include "conduction" or "convection".

7 0

4 years ago