2 years ago

Which of the following best describe the particles in a liquid.

Physics

1 answer:

VashaNatasha [74]2 years ago

4 0

A. fixed volume, changeable shape.

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in a Mercury thermometer the level of Mercury Rises when its bulb comes in contact with a hot object what is the reason for this

olasank [31]

Answer:

because thermometric liquid readily expands on heating or contracts on cooling even for a small difference in the temperature of the body.

3 0

2 years ago

Sugar is considered a crystalline solid because

Nina [5.8K]

Answer:

Im sure the awnser is option

A. arranged in a regular pattern.

8 0

2 years ago

Which of the following is a field (action-at-a-distance) force?

Kobotan [32]

Answer:

$F_{grav}$ is a field force, as gravity does not physically apply force and does not require proximity.

Explanation:

3 0

3 years ago

An object that is slowing down is accelerating.<br> True<br> False

Art [367]

Answer:

True

Explanation

When an object slows down the Acceleration is in the other direction which “ slows it down

8 0

2 years ago

A child of mass 27 kg swings at the end of an elastic cord. At the bottom of the swing, the child's velocity is horizontal, and

snow_tiger [21]

Answer:

The magnitude of the rate of change of the child's momentum is 794.11 N.

Explanation:

Given that,

Mass of child = 27 kg

Speed of child in horizontal = 10 m/s

Length = 3.40 m

There is a rate of change of the perpendicular component of momentum.

Centripetal force acts always towards the center.

We need to calculate the magnitude of the rate of change of the child's momentum

Using formula of momentum

$\dfrac{dp}{dt}=F$

$\dfrac{dP}{dt}=\dfrac{mv^2}{r}$

Put the value into the formula

$\dfrac{dP}{dt}=\dfrac{27\times10^2}{3.40}$

$\dfrac{dP}{dt}=794.11\ N$

Hence, The magnitude of the rate of change of the child's momentum is 794.11 N.

7 0

3 years ago