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a) energy transferred = mass.specific heat capacity.temperature change, or E = m.c.theta. c is provided at 4181 joules per kg. so E = 2.4181.(80-20) = 501720 joules

b) some water has evaporated off...

Apparatus: The wire is secured by a clamp and clamp stand A hanging mass is attached to the end of it, where the mass hung can...

Let's begin with the definition of stress:

Stress = F/A

First, we need to recall that the force the weight of the crate will exert on the cable will be equal to:

F= m*g

We know...

First, we need to recognise which equation to use. From the Physics Equation Sheet, we can see that the correct equation here is that dQ=mcdT, where dQ is the Energy transfer. Using this equation...

Vertcal component of velocity: 20Sin(30)

Rearrange suvat equation for t in terms of u, a, s

t is the time in the air and is what we want, u is 20sin(30), a is -9.81 (negative since gravity p...