Specific heat capacity required practical questions (h)
4500
lise the graph to answer the following questions:
i) how much energy is needed to heat
up 1kg of water by 15°c?
3400
(2)
specific heat
capacity uveo
ii) how much energy is needed to heat
up a 15kg block of iron by 30°c?
(2)
1000
1000
400__
450_
iii) a 20kg concrete block is at 20°c & is
heated to 65°c. how much energy is
used to heat the block? convert your
answer to kilojoules (kl).
water
air
copper
tron
concrete
cotton
iv) a 250g copper pipe is heated from 10°c to 31°c.
(2)

It may seem strange that the selected velocity does not depend on either the mass or the charge of the particle. (for example, would the velocity of a neutral particle be selected by passage through this device? ) the explanation of this is that the mass and the charge control the resolution of the device--particles with the wrong velocity will be accelerated away from the straight line and will not pass through the exit slit. if the acceleration depends strongly on the velocity, then particles with just slightly wrong velocities will feel a substantial transverse acceleration and will not exit the selector. because the acc