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Physics
GCSE

Find the speed of a wave.

To solve that we get given that a wave generator produces three waves per second at a wavelenght of 1.2 meters.

To tackle this you can use the formula v= f * lambda (speed = frequency * wavelength)...

Answered by Max P. Physics tutor
1904 Views

For a car with a mass of 1200kg, how long will it take for it to accelerate to 25m/s, starting from rest, with a total driving force of 1,500N?

This can be solved in 2 main sections: the first to find the acceleration of the car, and then the second to find how long it spends accelerating. To find the acceleration, Newton's 2nd Law (F=ma) can be ...

Answered by Christopher S. Physics tutor
4422 Views

Describe the difference between reflection and refraction (assume the mediums have smooth surfaces)

Reflection: a wave hits a surface, and bounces back into the medium it was originaly in

Refraction: a wave enters a medium with a different refractive index to the original medium it was travelling...

Answered by Abigail B. Physics tutor
2031 Views

What is a force?

A force is any influence that causes an object to undergo a specific change. Resulting unbalanced forces can cause changes in speed, shape or direction, whereas equal or balanced forces result in an equil...

Answered by William H. Physics tutor
1940 Views

Simon's car has run out of fuel. He must push his car 5 metres to the petrol pump, using a force of 200N. How much work does Simon do?

This question asks students to recall the equation Work done = Force x Distance. 

In this question, students must multiply 200 by 5, with the answer being 1000 Joules. 

It is important that ...

Answered by James W. Physics tutor
2157 Views

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