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THE UNITED REPUBLIC OF TANZANIA NATIONAL EXAMINATION COUNCIL
PHYSICS FTNA 2012
(i) Physics can be defined as the study of:
(ii) The following instruments are used to measure length except:
(iii) A force exerted by a pressure of 20Pa acting over an area of 2m2 is:
(iv) A Bunsen burner has a massive and wide base in order to:
(v) A body which gains electrons will attract a:
(vi) Pressure in a liquid contained in a vessel depends on:
(vii)The energy from hot rocks within the earth is called:
(viii)Materials which allow only a small portion of light to pass through are called:
(ix)Measurement of mass using an equal arm balance lever is an application of the principle of:
(x)A current of 0.2A flows through a resistor of 200. The potential difference across the resistor is:
(xi)Strong and permanent magnets are made up of:
(xii)A lever which has its fulcrum between effort and load is said to be of:
(xiii)Which of the following is true about atmospheric pressure?
(xiv)The product of force and displacement is known as:
(xv)A body moved a distance of 200cm in 2seconds. Its velocity in SI units was:
(xvi)A passenger in a bus which starts to move forward tends to fall backwards. This phenomenon demonstrates:
(xvii)The boiling point of pure water at sea level is:
(xviii)Forces that exist between molecules of the same substance are called:
(xix)An image formed in a plane mirror is always:
(xx)Motor vehicle tyres are made up of grooved rubber in order to:
2.Match each item in List A with a response in List B by writing its letter beside the number of the corresponding item in the table provided.
(i) Distance travelled per unit time
(ii) Earth is between the sun and the moon
(iii) Force is directly proportional to the extension
(iv) Friction between the layers of fluids
(v) Instrument for measuring electric current
(vi) Measures gas pressure
(vii) Momentum change
(viii) Thermodynamic temperature
3.(a) Differentiate between:
(i) Scalar and vector physical quantities
(ii) Kinetic and potential energies.
(b) Give two differences between mass and weight of an object.
4.(a) Elasticity can be defined as .
(b) Mention two methods by which a magnetic substance can be turned into a magnet.
(c) Two types of intermolecular forces are:
5. (a) Three states of matter are:
(b) Lubricants are mostly applied in machine parts in order to
(c) Draw magnetic lines of force of a bar magnet showing its poles.
6.(a) Mention three states of equilibrium.
(b) Calculate the mechanical advantage of a simple machine which has a velocity ratio of 5 and efficiency of 80%.
7.(a) Define each of the following terms as applied in physics:
(b) A force of ION acts on a stationary object of 5kg. This action causes an object to move along a smooth horizontal surface for 8 seconds before stopping. What is the velocity of the object?
8.(a) Explain briefly why:
(i)Water tanks have their outlets fixed at the bottom?
(ii)A tractor with wide tyres cannot easily get stuck in muddy places as compared to vehicles with narrow tyres.
(b) Calculate the maximum pressure exerted by a block of mass 150kg and surface dimensions of 4m by 6m by 8m resting on the table.
9. State the following:
(i) Archimedes principle
(ii) Law of flotation
(b) A body has a mass of 120g and a volume of 100cm3. Will the body sink or float in water? Give reason for your answer.
10.(a) State Ohms law.
In the diagram below calculate the value of R.
A potential difference of I0V is applied across parallel resistors of 20 and 40. Calculate the current in the circuit.
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