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Physics
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which part of the electromagnetic spectrum provides most of the energy to heat the water in a solar thermal power station?, how does this heated water allow electricity to be generated?

a)infrared b)the water boils causing it to turn to steam which passes through a turbine, turning an electrical generator which produces a current.

Answered by Monty C. Physics tutor
11902 Views

How to determine the total time of flight for a projectile launched at an angle theta to the horizontal with an initial speed u?

  1. First, decompose the initial velocity (u) into x and y components using trigonometry. These are x= ucos(theta) and y=usin(theta)
  2. Note that the x (or horizontal) component does not change bu...
Answered by Jonathon B. Physics tutor
7761 Views

Why doesn't the magnetic force change the velocity of a particle?

Well actually, it does. Remember that the velocity is a vector and so is the force. Since F=ma, the acceleration due to a given force points in the same direction as the force itself. The magnetic force i...

Answered by Ana S. Physics tutor
2616 Views

How do we know the energy of a photon (light particle) is quantised?

Firstly, quantisation of energy means that energy can only exist for specific, discrete values, i.e. it is not continuous. Now, photons display this phenomena however it is not immediately obvious why, as...

Answered by Ben M. Physics tutor
2296 Views

Discuss how X-rays and Ultrasound can be used for medical purposes, including their advantages and disadvantages.

Uses for x-rays: Detecting broken bones, Cancer treatment, CT scans._
Uses for Ultrasound: Pre-natal scanning, Destruction of kidney stones/plaque on teeth, Internal imaging of body parts._

A...

Answered by Isaac F. Physics tutor
8587 Views

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