2 years ago

How will the positions of the police car and the truck compare when they have the same speed and why?

1 answer:

7 0

Answer:

Two cars of equal weight and braking ability are travelling along the same road but combined with other factors it could mean the difference between life.

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What is in the blank?

Vika [28.1K]

This is in the thermosphere which is at an altitude of 85-520km

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2 years ago

The distance between two particles is 2 centimeters. If the distance is increased to 4 centimeters, the force will be ?

postnew [5]

Answer:

The new force is 1/4 of the previous force.

Explanation:

Given

$Initial\ Distance = 2cm$ ---- $r_1$

$New\ Distance = 4cm$ --- $r_2$

Required

Determine the new force

Let the two particles be q1 and q2.

The initial force F1 is:

$F_1 = \frac{kq_1q_2}{r_1^2}$ --- Coulomb's law

Substitute 2 for r1

$F_1 = \frac{kq_1q_2}{2^2}$

$F_1 = \frac{kq_1q_2}{4}$

The new force (F2) is

$F_2 = \frac{kq_1q_2}{r_2^2}$

Substitute 4 for r2

$F_2 = \frac{kq_1q_2}{4^2}$

$F_2 = \frac{kq_1q_2}{4*4}$

$F_2 = \frac{1}{4}*\frac{kq_1q_2}{4}$

Substitute $F_1 = \frac{kq_1q_2}{4}$

$F_2 = \frac{1}{4}*F_1$

$F_2 = \frac{F_1}{4}$

The new force is 1/4 of the previous force.

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2 years ago

What are the differences between refraction and diffraction?

Liula [17]

Refraction is the change in direction of a wave.
Diffraction is the bending of a wave around a barrier.

5 0

3 years ago

the maximum displacement of a particle, within a wave, above or below its equilibrium position, is called__________

Gre4nikov [31]

Answer:

the amplitude.

Explanation:

3 0

3 years ago

Read 2 more answers

Plz do it all i will give brainlest and thanks to best answer.

maxonik [38]

Its a, metal is a good conductor of heat so yea
Hope this helps :)

4 0

2 years ago

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