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Physics
GCSE

Compare the wavelength, frequency and speed of an emitted and reflected microwave

A reflected microwave will have a decreased wavelength, increased frequency and same speed when compared to an emitted microwave.

Answered by Paul I. Physics tutor
3787 Views

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
11880 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
2599 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
8549 Views

What is the difference between speed and velocity?

Velocity is a vector quantity so takes both magnitude and direction into account. Speed is a scalar so only takes magnitude into account. They both have units of meters per second.

Answered by Sebastian R. Physics tutor
2278 Views

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