2 years ago

What one is it for only number 2?

1 answer:

5 0

A is 30kg b is car on top of hill c plane in air d full plane

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vivado [14]

Answer is C...........

5 0

2 years ago

Eva8 [605]

Answer:

Keeping the speed fixed and decreasing the radius by a factor of 4

Explanation:

A ball is whirled on the end of a string in a horizontal circle of radius R at constant speed v. The centripetal acceleration is given by :

$a=\dfrac{v^2}{R}$

We need to find how the "centripetal acceleration of the ball can be increased by a factor of 4"

It can be done by keeping the speed fixed and decreasing the radius by a factor of 4 such that,

R' = R/4

New centripetal acceleration will be,

$a'=\dfrac{v^2}{R'}$

$a'=\dfrac{v^2}{R/4}$

$a'=4\times \dfrac{v^2}{R}$

$a'=4\times a$

So, the centripetal acceleration of the ball can be increased by a factor of 4.

7 0

3 years ago

Andreyy89

The awnser is condensation

5 0

2 years ago

tester [92]

The blank should be electrons, I think.

4 0

3 years ago

padilas [110]

The answer is Rule of the law

5 0

2 years ago