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2 years ago

Plz hep me tell ans of this only

Physics

1 answer:

Stolb23 [73]2 years ago

4 0

We have no idea what force the object might exert until it hits something.

In order to accelerate 70 kg at the rate of 20 m/s^2, YOU or some machine has to PUSH it with a force of (F=m•a) 1,400 Newtons. If you stop pushing it, it stops accelerating.

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One observer stand on a train moving at a constant speed, and one observer stands at rest on the ground. The person on the train

ANTONII [103]

Answer:

b) Equal to c

Explanation:

According to relativity, the speed of light in free space is constant in all inertial reference frame.

3 0

2 years ago

40 POINTS!!! PLEASE HELPP!!!

NeX [460]

Answer:

Explanation:

if it was B it would say from one to another to another

7 0

2 years ago

Read 2 more answers

Using your Periodic Table, which element below has the smallest atomic radius? A.) Sodium, B.) Chlorine, C.) Phosphorus, D.) Iro

egoroff_w [7]

Explanation:

Chlorine is the smallest atomic radius

6 0

2 years ago

Read 2 more answers

Identical isolated conducting spheres 1 and 2 have equal charges and are separated by a distance that is large compared with the

scoundrel [369]

Answer:

F = 0.1575 N

Explanation:

When the third sphere touches the first sphere, the charge is distributed between both spheres, then now the first sphere has only half of his original charge.

In this moment then

Sphere one has a charge = Q/2

Sphere three has a charge = Q/2

Now when the third sphere touches the second sphere again the charge is distributed in a manner that both sphere has the same charge.

How the total charge is Q = Q/2 + Q = 3/2Q, when the spheres are separated each one has 3/4Q

Sphere two has a charge = 3/4Q

Sphere three has a charge = 3/4Q

The electrostatic force that acts on sphere 2 due to sphere 1 is:

F = $\frac{kQ_{1}Q_{2} }{r^{2} }$

F= $\frac{K(Q/2)(3Q/4)}{r^{2} }$

how $\frac{KQ^{2} }{r^{2} }$ = 0.42

Then

F = $\frac{0.42*3}{8}$

F = 0.1575 N

3 0

3 years ago

5. How are electromagnetic waves similar to ocean waves?.

Masteriza [31]

Answer:

Electromagnetic waves have crests and troughs similar to those of ocean waves. The distance between crests is the wavelength. The shortest wavelengths are just fractions of the size of an atom, while the longest wavelengths scientists currently study can be larger than the diameter of our planet!

Explanation:

hope it's helps u ...........!

3 0

2 years ago

Plz hep me tell ans of this only​

Plz hep me tell ans of this only