All Questions
11
questions
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Can two objects of different mass experience the same air resistance? [duplicate]
This question is assuming that the objects have the same shape and size, but different masses. I know that all objects have the same gravitational acceleration on earth, which is about 9.8 m/s^2. ...
- 539
1
vote
1
answer
89
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How do objects with more mass accelerate when pushed downward?
This is kind of a simple question.
I was basing it off Newton's second law, $$F=ma$$
With the same applied force, an object with more mass will accelerate less.
However, what if two objects of unequal ...
- 539
1
vote
4
answers
673
views
How does mass relate to kinetic energy?
I was working on homework and I had to list what kinetic energy depends on. Interestingly, it turns out it's also based on mass, not only speed. Does anyone have an explanation?
- 539
0
votes
2
answers
71
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Confusion in calculation of power [duplicate]
Question-
Sand is being dropped from a stationary dropper at a rate of 0.5 kg s$^{-1}$ on a conveyor belt moving with a velocity of 5 ms¹. The power needed to keep belt moving with the same velocity ...
- 252
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votes
1
answer
3k
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Examples of adaibatic and isothermal process from daily life
i am not actually understanding the applications of isothermal and adaibatic process in daily life. could any one help me with best examples , that would help me to catch up with the topic
0
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1
answer
113
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Is gravity lost or gained by applying energy?
Is gravity lost or gained by applying energy?
Background:
When I hold an apple with my outstretched hand, I use energy to keep it from falling.
When I drop an apple (or throw it down), it looses ...
8
votes
2
answers
2k
views
Does a rotating object have more inertia, mass and gravitational pull?
When an object is rotating on an axis, it has stored rotational energy in it. Since energy and mass are related, does this stored rotation increase the mass of the object? And if so, will it be harder ...
- 117
0
votes
2
answers
917
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Calories Burned While Hiking [closed]
I want to find out how many calories are burned on any particular hike by any particular by using a formula. I figure it's probably a simple physics question, but since I never took physics, I don't ...
- 101
3
votes
1
answer
1k
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Does "Crack The Whip" actually speed you up?
"Crack The Whip" is a game played on ice skating rinks where several individuals line up all facing the opposite end of the rink, and skate forward. When the group reaches the opposite end of the rink,...
4
votes
4
answers
57k
views
Relationship between mass, energy, and a force?
I've never truly understood the relationship between mass, energy, and force. I know what each of the three are, I just don't fully understand how they interact with each other.
For example,
How do ...
- 41
1
vote
3
answers
10k
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Relation between Newtons and Kilograms
Work is expressed as $W=Fd$, where the $F$ is in Newton, $d$ is in meters and result $W$ is in Joules.
For example, if I take $1N$ on earth and lift it $1m$ up in the air I have done $1J$ of work.
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