3 years ago

Which of these examples has the most kinetic energy?

Physics

2 answers:

ch4aika [34]3 years ago

8 0

The answer would be A.a fully charged car battery

gavmur [86]3 years ago

3 0

The answer is C. A skydiver floating down on a parachute.

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What is the primary evidence used to determine how the Moon formed? O A. Moon craters and Earth craters were caused by the same

Leona [35]

Answer is a
Explanation it is a

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2 years ago

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skad [1K]

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3 years ago

The period T of a pendulum of length L is measured to determine g at the surface of Earth. The equation used is T=2π√L/g. The ma

saul85 [17]

Answer:

C: Variation in the value of g as the pendulum bob moves along its arc.

Explanation:

The formula for period of a simple pendulum is given by;

T = 2π√(L/g)

Where;

L is length

g is acceleration due to gravity

Now, from this period equation, it is clear that the only thing that can affect the period of a simple pendulum are changes to its length and acceleration due to gravity.

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2 years ago

A stationary siren on a firehouse is blaring at 81Hz. Assume the speed of sound to be 343m/s. What is the frequency perceived by

inn [45]

For a stationary siren on a firehouse is blaring at 81Hz. Assume the speed of sound to be 343m/s, the frequency perceived is mathematically given as'

F=81.721Hz

<h3>What is the frequency perceived by a firefighter racing toward the station at 11km/h?</h3>

Generally, the equation for the doppler effect is mathematically given as

$F'=\frac{vs+v}{vs}*f$

Therefore

F=81(343+3.05556)/343

F=81.721Hz

In conclusion, the frequency is

F=81.721Hz