Question 21 (3 points) Having too high of a compression ratio in a car engine ca

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Question 21 (3 points)

Having too high of a compression ratio in a car engine can cause

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Question 22 (3 points)

Dispersion is

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Question 23 (3 points)

What does the period of a pendulum depend on?

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Question 24 (3 points)

________ supplies part of the energy to a pendulum clock, while _________ supplies most of the energy for a balance clock.

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Question 25 (3 points)

Which of the following can cause a charged particle to accelerate?

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a) Too low of a fuel combustion temperature. b) Knocking due to postignition of the fuel. c) Knocking due to preignition of the fuel. d) Knocking due to loose valves

Explanation / Answer

21)
Higher compression ratios lead to engine knocking.
Correct option :- Knocking due to postignition of the fuel.

22)
Dispersion is - The dependence of a wave's speed on its wavelength.


23)
What does the period of a pendulum depend on?,
T = 2**sqrt(L/g)
Correct option -: Length and gravity.

24)
Gravity provides part of energy in the pendulum clock, and for Pendulum clock, T = 2**sqrt(L/k)
where k is spring constant.

Correct option:-(b) Gravity; a spring

25)
Which of the following can cause a charged particle to accelerate?
Force on charged particle, F = q*E
So Correct option:-(a) An electric field.

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