## 3.8 kilograms of water are changed from ice at 0˚C into liquid water at 0˚C?

Question
3.8 kilograms of water are changed (a) from ice at 0˚C into liquid water at 0˚C (b) from liquid water at 100˚C into steam at 100˚C. For each situation, determine the change in mass ...
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General Physics 3 years 1 Answer 1232 views

Question
A metal Sphere has a radius of 3.0 mm and a Mass of 0.96 g. Calculate the volume of the Sphere and then the Density of the metal?
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General Physics 3 years 1 Answer 466 views

## Was the original (conventional) kilogram a weight of something?

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We say kg is for mass and Newton is for weight, but was a kg originally the weight of smt when scientists defined it or could they get gravity out of the picture somehow?
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General Physics 3 years 1 Answer 740 views

## How much heavier is the proton compared to the electron?

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How much heavier is the proton compared to the electron? Choose the best answer from the options below: A 10 times B 180 times C 1,000 times D 1,800 times E 2 million times
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General Physics 3 years 1 Answer 476 views

## Is gravity real?

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How are we gonna trust gravity if the guy who made it up,Isaac Newton, died a virgin?
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General Physics 3 years 1 Answer 536 views

## Does a lightning always choose the tallest object to strike?

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If i am standing on a wide plane field, and there is a taller than me object next to me, is it certain that the lightning will strike the taller object rather than me? ...
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General Physics 3 years 1 Answer 496 views

## Why has it proven so hard to find new cutting edge physics beyond the standard model at the LHC?

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Is it more likely to come from gravitational waves and a possible black hole fire wall discovery than the LHC? Will the LHC ever find new physics beyond the standard model?
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General Physics 3 years 1 Answer 431 views

## Is zero gravity a myth?

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Even if you’re in so-called zero gravity you’re really in micro gravity. Only if you’re like trillions of miles from the nearest large body are you actually in zero gravity.
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General Physics 3 years 1 Answer 457 views

## Is there a way to calculate how much calories are burnt when you run?

Question
I want formulas. I know that kinetic energy equals 1/2mv2, could it be calculated with this? Let s say for instance that I run 500 meters in a time 500 seconds. How would I ...
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General Physics 3 years 1 Answer 452 views

## How does a steel submarine float when it is in the harbor?

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How does a steel submarine float when it is in the harbor?
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General Physics 3 years 1 Answer 445 views

## Is a magnetic field a type of light?

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I know that light is an electromagnetic field, but what kind of light to magnets emit which gives them their special gravity?
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General Physics 3 years 1 Answer 876 views

## A Mass on a Turntable: Conceptual

Question
(Intro 1 figure) A small metal cylinder rests on a circular turntable that is rotating at a constant rate, as illustrated in the diagram. Part A
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General Physics 3 years 1 Answer 1093 views

Question
If an equation for a moving object is X(t)= -9 meters + (3.5 meters per second)*t How much time would it take for an object to reach a position of +40 meters? I keep getting 20.43 m/s=t which ...
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General Physics 3 years 1 Answer 518 views

## Does the gravitational force that we experience on a daily on Earth, actually come from Earth? See details?

Question
Or is it rather a force that surrounds objects with mass in space? I watched a video on YouTube about NASA performing an experiment to simulate gravity with the use of inertia, so if gravity can be “created” ...
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General Physics 3 years 1 Answer 429 views

## Deceleration help! (Physics)?

Question
Eric is traveling at 30m/s. He runs out of gas and decides to coast to a stop. He does so over a distance of 225 meters. How long will Eric coast before coming to ...
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General Physics 3 years 1 Answer 462 views

## Does a black hole suck things in faster the closer it gets to the center?

Question
Or is the speed things are sucked in a constant speed no matter what point you’re at in the hole (top vs singularity?) thank you in advance!
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General Physics 3 years 1 Answer 521 views

## How to get the average velocity if the angle, distance and time are given?

Question
Distance=2 Time=1.17 seconds Angle= 30 degrees What is the Average Velocity?
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General Physics 3 years 1 Answer 831 views

## A cue stick hits a cue ball horizontally a distance x above the centre of the ball, as in the diagram below.

Question
A cue stick hits a cue ball horizontally a distance x above the centre of the ball, as in the diagram below. The cue ball is on a smooth horizontal surface. You may assume that the cue ball is a ...
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General Physics 3 years 1 Answer 951 views

## Why are whites obsessed with general relativity?

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Scientists in Asia and the Middle East seem to be more interested in experimental and quantum physics. Things that have current commercial application. Whites seem obsessed with the stream of physics that involve spacetime. Even at an undergraduate level, ...
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General Physics 3 years 1 Answer 691 views

10. ### Spacetime question?

No Questions Found.

## Physics question on kinetic energy?

Question
Particle A of mass 500g is moving with a constant velocity of 12m s^-1 towards particle B of mass 1.5kg which is initially at rest. After collision, particle A comes to a rest and particle B moves ...
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General Physics 3 years 1 Answer 1369 views

## Projectile Motion and Conservation of Energy Ranking Task

Question
Six baseball throws are shown below. In each case the baseball is thrown at the same initial speed and from the same height H above the ground. Assume that the effects of air resistance are negligible. Rank these throws according to the ...
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General Physics 3 years 1 Answer 1349 views

## Does fire respond to electromagnetism?

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Fire is plasma. Plasma is ionized gas. Ionized gas is electrified gas. Electrified objects create their own electromagnetic field. So if fire is made of electrified gas, shouldn’t it respond to magnets?
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General Physics 3 years 0 Answers 1341 views

## When two objects collide and some of the energy is converted to heat does that mean some of the momentum is lost?

Question
I just read that in an impact some energy can be turned into heat instead of transferring momentum. So how fast would the ice cube impact need to be for them to turn into ...
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General Physics 3 years 1 Answer 1323 views

## Why do sea waves never stop?

Question
Shouldn’t they stop with time? I mean go ahead and shake a bottle of water, it will shake and it will eventually stop, unless you shake it again. What makes the sea water move so much? Why doesn’t ...
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General Physics 3 years 1 Answer 1274 views

## 3.8 kilograms of water are changed from ice at 0˚C into liquid water at 0˚C?

Question
3.8 kilograms of water are changed (a) from ice at 0˚C into liquid water at 0˚C (b) from liquid water at 100˚C into steam at 100˚C. For each situation, determine the change in mass ...
in progress 0
General Physics 3 years 1 Answer 1232 views

## Physics Torque & Force

Question
You’re carrying a 3.8-m-long, 24
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General Physics 2 years 0 Answers 1212 views

## I’m trying to understand voltage?

Question
I have understood that voltage is how much energy is carried by the current but say you had current of 10A carrying 20V, does that mean amp of current is carrying 20V or does that mean that the ...
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General Physics 3 years 0 Answers 1141 views

## An iron ball is dropped, it falls 153.7 m before hitting the ground…?

Question
A) How much time did it take to hit the ground? B) What is the velocity just before it hits the ground?
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General Physics 3 years 1 Answer 1102 views

## A Mass on a Turntable: Conceptual

Question
(Intro 1 figure) A small metal cylinder rests on a circular turntable that is rotating at a constant rate, as illustrated in the diagram. Part A
solved 0
General Physics 3 years 1 Answer 1093 views