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shusha [124]
3 years ago
13

Volume of an block is 5 cm3. If the density of the block is 250 g/cm3, what is the mass of the block ?​

Physics
1 answer:
9966 [12]3 years ago
4 0

Answer:

1.25kg

Explanation:

Simply multiply volume and density together

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You’ve made the hypothesis that the stepper the slope , the faster a ball will be rolling when it reaches the bottom .
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Answer:

B) how steep the slope is

Explanation:

Because you have to know how is the influence of the steep of the slope in the time that a ball reaches the bottom. The steep of the slope is the variable that you would have to change in an experiment.

I hope this is useful for you

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3 years ago
Consider a situation where the acceleration of an object is always directed perpendicular to its velocity. This means that
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Two sound waves have equal displacement amplitudes, but wave 1 has two-thirds the frequency of wave 2. What is the ratio of the
zlopas [31]

Answer:

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

Explanation:

c = Speed of wave

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A = Area

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\nu_1=\dfrac{2}{3}\nu_2

Intensity of sound is given by

I=\dfrac{1}{2}\rho c(A\omega)^2\\\Rightarrow I=\dfrac{1}{2}\rho c(A2\pi \nu)^2

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}

8 0
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Write down the principle of lever? <br>= ????​
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i hope that helps?^
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A runner covers 40 m in 4.55 seconds ,what is their average velocity?
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Velocity = displacement/time



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3 0
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