FUTA Physics 2006/2007 Past Questions

An ideal gas has a volume of 155cm³, pressure of 3.00 x 10⁵ Pa and at 28°C. Find its volume at a pressure of 5.3 x 10⁵ Pa and temperature of 70°C

Three 5 resistors are connected in parallel with a potential difference of 6V across the combination. The heat dissipated is

If the angle of declination in a place is 10°E, calculate the true geographic bearing the compass reads N40°E.

A herdsman yelling out to a fellow herdsman heard the echo of his yell from a cliff 8s after. If the velocity of sound is 340m/s in air. How far is the cliff form the herdsman?

Which of the following is different from the others?

When a transformer has more secondary windings than primary windings, it

In an AC circuit, a 10mH inductor and a 10 resistor are connected in series. If the frequency of the AC line is 50Hz. what is the impedance of the combination?

An object is weighed with a spring balance. First, in air and then while totally immersed in water.. The readings on the balance are 0.48N and 0.36N respectively. Calculate the density of the object (Density of water =10³kg/m)

A ray of light travels from glass into air. What is the critical angle? The refractive index of glass is 1.6

A piece of stone is dropped from the top of a cliff. How far does it drop in the fifth second? g = 10m/s²

Two balls of masses 15g and 25g are moving with velocities 24m/s and 16m/s respectively. The balls coalesce on impact. Find their velocity after

200g of water at 10°C is contained in a vessel of negligible mass, 400g of water at 100°C is poured into it. What is the temperature of the mixture?

An electric bulb is labelled 100W, 220V. What is the resistance of the filament wires?

The water in a swimming pool appears to be 1.5m deep. The refractive index of water is 1.33. What is the real depth of the water in the swimming pool?

At 0°C, the velocity of sound in air is 330m/s. What is the velocity of sound at 100°C?

A boy runs 100m due north and then 100m due east. What is his displacement?

The speed of an air force jet was 400m/s when it flew past an anti-aircraft gun. Calculate its distance from the gun 4s later when the gun was fired

A mango fruit dropped to the ground from the top of a tree 40m tall. Find how long it takes the fruit to reach the ground if acceleration due to gravity (g=10m/s²)

A 0.1m long elastic band extends 5mm when a load of 80N is hung from its end. Calculate the strain on the band.

Which of the following statements describes what happened when an ice block that floats in a glass of water that is tilted to the brim melts?

A machine with a mass of 4kg fires a 45g bullet at a speed of 100m/s. Find the recoil speed of the machine gun.

Which of the following would you use to determine the weight of an object?

The force that causes an object to move in a circular path is called

A solid suspended by a piece of string is completely immersed in water. On attempting to lift the solid out of the water, the string breaks when the solid is partly out of the water. This is because

The following statements were made by some students describing what happened during an experiment to determine the melting point of solids i. The temperature of the solid was constant until melting started
ii. The temperature of the solid rose until melting started
iii. During melting, the temperature was rising
iv. During melting, the temperature was constant
v. The temperature continued to rise after all the solid had melted
vi. Temperature stopped rising after the sold had melted.
Which of the following gives correct statements in the right order?

When some grains of table salt were put in a cup of cold water, kept at constant temperature and left undisturbed, all the water tasted salty after some time. This is due

Given that the latent heat of fusion of ice is 80cal/g, how much heat will change 100g of ice at 0°C into water at the same temperature?

A blacksmith dropped a 1.5kg iron bead at 300°C into some quantity of water. If the temperature of the water rose from 15°C to 18°C, what is the mass of the water assuming no heat is lost to the surrounding? (Take the specific heat of iron as 0.46J/kg/c and that of water as 4.2 x 10³J/kg/c

Which of the following properties are not those of a suitable thermometric liquid? I. It should be a good conductor of heat II. It should be opaqueIII. Its expansion should be regular IV. It should wet glass V. It should have a high melting point and low boiling point

A gas at pressure P N/m² and temperature 30°C is heated to 61 °C at constant volume. Find its new pressure.

A steel bar has a width of 10cm at 50°C. At what temperature will it fit exactly into a hole of constant width 10.005cm if coefficient of linear expansion of steel is 11 x 10^-6 /c?

The amount of heat that is required to raise the temperature of unit mass of a substance one degree Celsius is called

Two lamps rated 60W and 240V each are connected in series What is the total power dissipated in both?

Three 3 resistors connected in parallel have a potential difference of 24V applied across the combination. What is the current in each resistor?

If PHCN charges 25k per kwh, find the cost of operating for 36 hours a lamp requiring 1.5A on a 240V line.