Top answers

Physics
All levels

Why the Newton's second law of motion important?

Newton's Second Law of Motion F=ma is very important because it shows the relationship between forces and motion. It allows you to calculate the acceleration (and therefore velocity and position) of an...

SG
Answered by Saeed G. Physics tutor
50837 Views

A stationary observer Bob, observes Alice take 5 seconds to travel from point A to B at 0.95c. How much time does Alice measure the journey from A to B to take?

This question is all about the application of Special Relativity. In order to solve this problem we need to identify that the correct equation to use here is:t= (gamma factor)t0Where t is the t...

ER
Answered by Elizabeth R. Physics tutor
3251 Views

1 dm^3 of water steam at 200 degrees C, 10 bar enters a compressor. When it leaves, its temperature is 400 deg. C and volume 0.5 dm^3. Calculate the final pressure of steam. Critically discuss the assumptions you made in your calculations.

This question refers to the behavior of gases under compression. In IB we model such situations using the ideal gas equation, which states that:

pV = nRT,

where:

...

MM
Answered by Marcin M. Physics tutor
3798 Views

Two identical objects have a charge of magnitude q. If r is the distance bethween them, what should their mass be so that the objects are balanced.

Our first step in this physics problem should be to identify all of the forces that act on the objects. There are two forces here,electrical and gravitational. Since both objects have the same charge i...

DK
Answered by Dilyana K. Physics tutor
3539 Views

Atmospheric Pressure is about 1.0x10^5 Pa. What is the downward force of the air on a desktop of surface area 1m^2?

Here we are dealing with force, pressure and area so we use the formula F=PA. We simply slot in the given numbers where P=1x105, and A=1. The resulting force is 1x105

MK
Answered by Monique K. Physics tutor
18555 Views

We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

MyTutor is part of the IXL family of brands:

© 2026 by IXL Learning