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Alexxandr [17]
2 years ago
13

How much Kinetic Energy does a 1.5 kg book at rest on top of a 2.3 m tall desk have?

Physics
1 answer:
anygoal [31]2 years ago
4 0

A book falls off of a \displaystyle 2.2m high    table. If the book weighs \displaystyle 0.75kg, what will its    final velocity be right before it hits the ground?

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A chair of weight 125 N lies atop a horizontal floor; the floor is not frictionless. You push on the chair with a force of F = 3
iris [78.8K]

Answer:

N = 148.10N

Explanation:

GIVEN

Weight =125 N

force = 35

angle =42°

since there is no vertical acceleration a_{y} = 0 from

free body diagram

\Sigma fa_{y} = ma_{y} = 0

N-W-Fsin42\degree = 0\\\\N= W+Fsin42\\N = 125+35\times 0.66\\N = 148.10 N

5 0
4 years ago
Best summarizes the law of conservation of energy?
Charra [1.4K]
It states that no form of energy can be created nor destroyed over time it is just conserved. 

Official Definition- <span>In physics, the </span>law of conservation of energy<span> states that the total </span>energy<span> of an isolated system remains constant—it is said to be conserved over time. </span>Energy<span> can neither be created nor destroyed; rather, it transforms from one form to another.</span>
4 0
3 years ago
Nine-year-old Dakoda realizes that the quantity of water in a glass remains the same, even when the water is poured into a diffe
Archy [21]

Answer:

Conservation

Explanation:

She has observation conservation because If the temperature of the liquids stays constant and the container is insulated and not heat or cool the liquid much would not change the density of the liquid very much so that it's original volume could remain constant.

The interesting thing is not that the child assumes the taller glass holds more liquid but that they fail to understand conservation: the fact that the water from one glass is going to be the same amount after being poured into any other container. It's as if they did not realize the water came from the same glass.

3 0
3 years ago
Is the study of muscle movements in the human body an example of biology
earnstyle [38]
Yes it is consider biology
3 0
3 years ago
Which scientist continued the work of another while studying the elliptical path of planets? Name both scientists. Kepler advanc
Korolek [52]
This question is so vague as to render it useless.

I suspect the answer they're looking for is Kepler advanced Copernicus's work as is stated. but the way science works is that anyone who has contributed will have their work built on. for example, Newton advanced Kepler's work on the elliptical path of planets as Einstein advanced Newton's work.
3 0
4 years ago
Read 2 more answers
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