Recent questions in Physics

+20 votes

0 answers

If we wanted “flying cars” why wouldn’t we make the road a negative magnet and the “tires” a negative as well so they repel each other?

asked Feb 19, 2023 in Physics by sauerkrautseagrass

+6 votes

0 answers

At what speed do planes usually take off?

asked Feb 19, 2023 in Physics by sarah calothis

+16 votes

0 answers

How do I revise the whole physics syllabus for the NEET 2023?

asked Feb 19, 2023 in Physics by C Colchester

+3 votes

0 answers

A 2kg stone is dropped from a height of 2m, what is the momentum of the stone just before it lands? What is the impulse of the ball?

asked Feb 19, 2023 in Physics by Knight Rider

+15 votes

0 answers

What is the average speed of a body which travels from A to B with a velocity of 10 m/s and from B to A with a velocity 20m/s?

asked Feb 19, 2023 in Physics by QuantumHorizon

+1 vote

0 answers

Has there been an experiment which proves that information cannot travel faster than the speed of light without being carried by some kind of matter/energy carrier?

asked Feb 19, 2023 in Physics by exenobby

+22 votes

0 answers

A and B are the same age. A goes into a rocket at 86.6% of lightspeed for 10 seconds. B is on Earth. For B's perspective, A's time slows down and vice versa. How then can A travel into the future if, in A's perspective, B is slowing down?

asked Feb 19, 2023 in Physics by LunarAlchemy

+22 votes

0 answers

A container with a mass of 5kg is lifted to a height of 8m. How much work is done by the gravitational force?

asked Feb 19, 2023 in Physics by Removed 4

+10 votes

0 answers

How long does light take to attain full speed?

asked Feb 19, 2023 in Physics by Stephen768

+9 votes

0 answers

How do you draw the diagram showing the ray of white light as it passes through a first and then the second prism?

asked Feb 19, 2023 in Physics by John Ennis

+4 votes

0 answers

How many digits of pi are needed to calculate the circumference of the observable universe down to the planck length (measured in our rest frame)?

asked Feb 19, 2023 in Physics by Paul Harper

+54 votes

0 answers

Why do things with nonspherical shapes tend to rotate around their center of mass?

asked Feb 19, 2023 in Physics by Lucky123

+24 votes

0 answers

How do I split an atom?

asked Feb 19, 2023 in Physics by BlazeOracle

+541 votes

0 answers

Can mechanical energy be converted into electrical energy directly without using any other device like magnets, windings etc.? If so, how can this be done?

asked Feb 19, 2023 in Physics by LunarTwilight

+24 votes

0 answers

How much measurable mass is contained in a mental image in the mind or a single thought of any human being? Do thoughts actually have any measurable mass? How can the mass of thoughts be measured? What devices would you use to measure mental mass?

asked Feb 19, 2023 in Physics by Jamie

+124 votes

0 answers

Why is density mass per unit volume?

asked Feb 19, 2023 in Physics by stevekj

+214 votes

0 answers

A piece of paper is 0.1 mm thick. How many times must it be folded so that the folded paper is more substantial than 1/2 mm thick?

asked Feb 18, 2023 in Physics by handyman.

+20 votes

0 answers

What is the spin of an entangled electron?

asked Feb 18, 2023 in Physics by provincedeadpan

+8 votes

0 answers

A car travelled at 50km/hr for 3 hours and at 60 km/hr for 2 hours. What was the average speed?

asked Feb 18, 2023 in Physics by JC Smith

+268 votes

0 answers

If water is taken to space and some is lost, will even the smallest amount of net water loss affect earth? Does earth regenerate water at all or is it finite?

asked Feb 18, 2023 in Physics by MysticHarmony

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