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How much force is needed to bring a car to a halt over 5 seconds - the car is moving with velocity km/hr and with a mass of 1000kg.

Explain the concept of momentum mathematically, then draw on physical intuition to reaffirm/deepen their understandingDiscuss how there exists a relationship between the rate of change of momentum and for...

Answered by Harrison L. • Physics tutor

1632 Views

How would we calculate the distance covered by a train that starts at rest, then accelerates to 5km/hr in 30 mins then stays at this constant speed for 12 minutes?

I would draw the situation Then use bring out the relevant SUVAT equationsI would explain how the equations work to give the student some intuitionThen carry out the problem step by stepThen I would ask i...

Answered by Harrison L. • Physics tutor

1449 Views

State Newton's 1st Law:

An object will remain at rest or constant velocity if all the forces acting upon it are equal (net force=0N).

Answered by Sam H. • Physics tutor

1494 Views

If photons of wavelength 0.1nm are incident on a 2m x 2m Solar Panel at a rate of 2.51x10^15s^-1, calculate the intensity, I, of the photons on the Solar Panel.

If wavelength = 0.1nm, we know (as E=hc/λ), the energy provided by each photon, E= 1.99x10¹⁵J .Therefore, if they hit the panel at a rate of 2.51x10¹⁵

Answered by Sam H. • Physics tutor

1518 Views

What is the density of a material if 4 cubic metres (m3 ) of it has a mass of 2,200 kg?

Density can be described as the amount of mass per unit volume. It describes how closely together different particles are spaced. It varies significantly from solids to liquids to gases.In terms of calcul...

Answered by Jamie M. • Physics tutor

4303 Views