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3 years ago

Please help ! Which of the following objects has the greatest momentum?

Physics

1 answer:

Tasya [4]3 years ago

4 0

Answer:

An object with a mass of 0.5 kg and a velocity of 3 m/s

Explanation:

Momentum = mass * velocity

= 0.5 * 3

= 1.5

Highest value among all.

Hope it helps!!

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Jo wants to find out about floating and sinking. She puts a rubber duck and a bar of soap in a

maks197457 [2]

Answer:

the soap sinks because it is more dense than the duck.

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3 years ago

A rope passes over a fixed sheave with both ends hanging straight down. The coefficient of friction between the rope and sheave

Oliga [24]

Answer:3.51

Explanation:

Given

Coefficient of Friction $\mu =0.4$

Consider a small element at an angle \theta having an angle of $d\theta$

Normal Force $=T\times \frac{d\theta }{2}+(T+dT)\cdot \frac{d\theta }{2}$

$N=T\cdot d\theta$

Friction $f=\mu \times Normal\ Reaction$

$f=\mu \cdot N$

and $T+dT-T=f=\mu Td\theta$

$dT=\mu Td\theta$

$\frac{dT}{T}=\mu d\theta$

$\int_{T_2}^{T_1}\frac{dT}{T}=\int_{0}^{\pi }\mu d\theta$

$\frac{T_2}{T_1}=e^{\mu \pi}$

$\frac{T_2}{T_1}=e^{0.4\times \pi }$

$\frac{T_2}{T_1}==e^{1.256}$

$\frac{T_2}{T_1}=3.51$

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3 years ago

Noah drops a rock with a density of 1.73 g/cm3 into a pond. Will the rock float or sink? Explain your answer.

Rainbow [258]

The answer to that is the rock will sink

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3 years ago

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To ensure a steady flight, the standard golf ball has nearly 400 ____ or “dimples” on its surface.

Gekata [30.6K]

To ensure a steady flight, the standard golf ball has nearly 400 indentations <span>or “dimples” on its surface. The correct option among all the options that are given in the question is the second option or option "B". The other choices are incorrect. I hope that this is the answer that has actually come to your help.</span>

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3 years ago

When an apple falls towards the earth,the earth moves up to meet the apple. Is this true?If yes, why is the earth's motion not n

Sedbober [7]

Answer:

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3 years ago