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USPshnik [31]
3 years ago
13

The equation for density is mass divided by volume. the mass of a substance is changed so that it is made of fewer particles. If

its volume is unchanged, how will its density change?
Physics
2 answers:
Finger [1]3 years ago
6 0
Density is directly proportional to mass. So if there's less matter inside object, its density will also reduce.
Kamila [148]3 years ago
3 0

Answer:

Density will decrease

Explanation:

In any division equation, if the numerator decreases, while the denominator stays constant, then the overall answer will decrease.

In this case, the formula is:

Density = Mass/Volume

If the <u>mass is to decrease</u> while the <u>volume stays constant</u>, then the overall answer (density), will decrease.

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iragen [17]
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3 0
3 years ago
A 62kg box is lifted 12 meters off the ground. How much work is done?
Temka [501]

Answer: 7291.2 joules

Explanation:

Work is done when force is applied on an object over a distance.

Thus, Workdone = Force X distance

Since Distance moved by box = 12 metres

mass of box = 62kg

Acceleration due to gravity when box was lifted is represented by g = 9.8m/s^2

Recall that Force = Mass x acceleration due to gravity

i.e Force = 62kg x 9.8m/s^2

= 607.6 Newton

So, Workdone = Force X Distance

Workdone = 607.6 Newton X 12 metres

Workdone = 7291.2 joules

Thus, 7291.2 joules of work was done.

4 0
3 years ago
The slope of the line on a speed-time graph tells the speed , true or false ?
KengaRu [80]
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8 0
3 years ago
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Does the earths magnetic field change with time?
ZanzabumX [31]

Answer:

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6 0
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A car travels at a constant velocity of 20.0 meters/second for 15 seconds. What is the power of the car if the initial force app
Zielflug [23.3K]
Work done by the force = Force x displacement. Power = work done/time = F.s/t = F.u.t/t = F.u = 95 x 20 = 1900J.                                                                                                                                                                                               {S=ut because acceleration is zero since car is moving at constant velocity}. 
3 0
3 years ago
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