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Dmitry_Shevchenko [17]
4 years ago
13

Energy conservation is the process by which one kind of energy changes into a another and when energy is converted this way it's

not lost or used up. true or false
Physics
1 answer:
Sedbober [7]4 years ago
7 0

True. The question describes the idea of energy conservation faithfully. Energy can change forms but remains the same within an isolated system over time. Within such a system, energy cannot be created or destroyed.

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One type of potential energy is gravitational potential energy. What is necessary for an object to have gravitational potential
galben [10]

Answer:

Gravitational potential energy is energy an object possesses because of its position in a gravitational field. Since the force required to lift it is equal to its weight, it follows that the gravitational potential energy is equal to its weight times the height to which it is lifted.

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Which is measured by the power of a machine?
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An object is thrown upward from the top of a 144​-foot building with an initial velocity of 128 feet per second. The height h of
ankoles [38]

Answer:

After 9 seconds the object reaches ground.

Step-by-step explanation:

We equation of motion given as h = -16t²+128t+144,

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That is we need to find time when h = 0

                        0 = -16t²+128t+144

                       16t²-128t-144= 0

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Negative time is not possible, hence after 9 seconds the object reaches ground.

8 0
3 years ago
A bag of sand has a density of 45 g/cm3 and a mass of 15 kg. How much space does the sand take up?
Aleks [24]

Volume = mass/density

 

Volume = 15000 g/45 g/cm3 ≈ 333.3 cm<span>3</span>

3 0
3 years ago
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The Venus flytrap is known for which of these behaviors?
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Snapping a leaf shut around an insect, I think.
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