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3 years ago

What force is needed to give a 4.5-kg bowling ball an acceleration of 9 m/s2?

Physics

2 answers:

Sloan [31]3 years ago

8 0

F=ma
f=4.5*9

40.5 N
hope this help

topjm [15]3 years ago

7 0

What force is needed to give a 4.5-kg bowling ball an acceleration of 9 m/s2?

$F = ma

F = 4.5 x 9$

40.5 N

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Answer:

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3 years ago

Two sound waves have equal displacement amplitudes, but wave 1 has two-thirds the frequency of wave 2. What is the ratio of the

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Answer:

$\dfrac{I_1}{I_2}=\dfrac{4}{9}$

Explanation:

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So,

$I\propto \nu^2$

We get

$\dfrac{I_1}{I_2}=\dfrac{\nu_1^2}{\nu_2^2}\\\Rightarrow \dfrac{I_1}{I_2}=\dfrac{\dfrac{2}{3}^2\nu_2^2}{\nu_2^2}\\\Rightarrow \dfrac{I_1}{I_2}=\dfrac{4}{9}$

The ratio is $\dfrac{I_1}{I_2}=\dfrac{4}{9}$

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3 years ago

A 1.5 kg ball pushed with a force of 13.5 N accelerates to the left. What is the acceleration of the ball?

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Explanation:

F= ma

13.5 =1.5a

1.5a/1.5 =13.5/1.5

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3 years ago

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Explanation:

Voltmeter is a device which measures the the voltage applied across the circuit. It is an electrical instrument used to measure the electric potential between the two points in an electric circuit.

Where as:

A switch is the device which used to connect or disconnect the circuit.

Resistor is a device which opposes the flow of current is an electric circuit.

An ammeter the is an electrical device which measures the amount of current in flowing in amperes in an electrical circuit

Hence,the correct answer is option (D).

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3 years ago

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