Carry out the following conversions to SI units (a) the mass of a proton is 1.67 yoctograms
(b) the wavelength of light is 600 nano meters,
(c) The pressure of a gas syringe is 2000N hom?
Total: 3
2. At temperatures dose to OK, the specific heat capacity cof a particular solid is given by
where is the thermodynamic temperature and b is a constant characteristic of the sold.
unit of specific neat capacity is Jkg K'. What is the unit of constant b, expressed in Si base
Total: 3 marks
3. The power loss Pin a resistor is calculated using the formula p. The uncertainty in the
potential difference V is 3% and the uncertainty in the resistance R is 2% What is the uncert
in power loss?
Total: 3 marks
4 An arrow is shot with a velocity of 30 m/s at angle of 37" above the horizontal. The arrow is
initially 20 m above the ground and 15.0 m from a wall
(a) At what height above the ground does it hit the wall? Total: 5 marks
(b) is it suil going up just before it hits the ground or it is already on its way down? Give a
reason for your answer
Total: 2 marks
5. The diagram below shows a box of mass 20 kg resting on a table
BON
The coefficient of static friction between the table and the box is 0.25. Determine the
(a) magnitude of limiting friction
Total: 2 marks
(b) the angle of friction
Total: 2 marks
(c) resultant force on the box
Total: 2 marks
(a) draw a free a body diagram showing all the forces and the angle of friction Total: 3 marks
Endi
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