Top answers

If two cars are moving, labelled car A and car B. Car A moves at 15 m/s and B at 10 m/s but car B also accelerated at 2 m/s/s. If the two both travel for ten seconds, which car will travel further?

Well for this question we can use the SUVAT equations. We'll see what values we have and what we're looking for. So firstly we have the initial speed, often denoted usign the letter u. I'm going to write Au ...
TW
Answered by Tom W. • Physics tutor
7498 Views

In a fluorescent tube, how are the atoms in the tube excited?

As there is a potential difference in the fluorescent tube. Electrons will flow from negative to the positive . These electrons collide with the orbital electrons in the atoms of the fluorescent tube. As the...
SW
Answered by Shaun W. • Physics tutor
5899 Views

what are the energy changes when a car rolls from the top of a hill to the bottom? Name two forces that would slow the acceleration of the car?

At first as the car is on the top of the hill, it has GRAVITATIONAL POTENTIAL ENERGY As the car rolls down the hill, GRAVITATIONAL POTENTIAL ENERGY changes to KINETIC ENERGY. Friction and Air resistance
SW
Answered by Shaun W. • Physics tutor
14323 Views

How can the average speedx of a gas molecule be derived?

To start with, some assumptions must be made to simplify the problem. Firstly the N molecules are assumed to have no size, be identical and not interact with each other. The second assumption is that the mol...
ZT
Answered by Zac T. • Physics tutor
3557 Views

The tip of each prong of a tuning fork emitting a note of 320Hz vibrates in SHM with an amplitude of 0.50mm. What is the speed of each tip when its displacement is zero?

As with any question that lists numbers, the first thing to do is to note down the known variables: f = 320 Hz A = 0.50 mm x = 0 mm v = ? This requires use of two of the simple harmonic motion (SHM) equation...
ES
Answered by Ellie S. • Physics tutor
17802 Views