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A mobile phone falls to the floor. The glass screen shatters while the aluminium frame remains intact. Explain why this happens in terms of the properties of glass and aluminium.

The glass screen is a brittle material so breaks with little plastic deformation.The aluminium material however shows elastic behavior and will, when the force is removed return to the original shape. Thi...

Answered by Lewis C. • Physics tutor

2630 Views

Explain how an acceleration-displacement graph could be used to determine the frequency of oscillation of a metal plate.

Acceleration (A)= Angular Velocity² (w²)Displacement (x)Angular Displacement= 2piFrequency (f)Gradient= A/x = w² = [2pi*f]²Rearrange the equation to g...

Answered by Tise O. • Physics tutor

8537 Views

Explain how a standing wave is set up on a string fixed at both ends.

An oscillation is send down the string which is reflected at the other end. This leads to the superposition of two waves, the transmitted and reflected wave, on the string. At the ends, where reflection o...

Answered by Peter S. • Physics tutor

5888 Views

Why does temperature effect the resistance of conductors?

The resistance of a conductor increases with temperature. This is because as the temperature increases the atomic lattice of the conductor has more energy so begins to vibrate more. This means it is more ...

Answered by Peter E. • Physics tutor

31176 Views

Hanging on a branch of a tree, a monkey sees a hunter aiming a gun at him. The monkey lets go of the branch at the exact same time the bullet is fired. Explain why the bullet hits the monkey.

This question is also applicable to physics mechanics.

Many would think the bullet will hit the monkey because it is travelling much faster than him. However, modelling the monkey as a particle...

Answered by Akram H. • Physics tutor

5158 Views