Recent questions in Physics

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What is a machine?

asked Jul 13, 2021 in Physics Form 3 by anony mous

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1 answer

An electric heater 1000W is used to heat 0.2kg of ice. Initially at -10°C to until all the mass changes to steam at 100°C.

asked Jul 13, 2021 in Physics Form 3 by anony mous

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1 answer

The diagram below shows the main features of a domestic refrigerator. Study the diagram and answer the questions that follow.

asked Jul 13, 2021 in Physics Form 3 by anony mous

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1 answer

Oil of density 800kgm-3 rests on the surface of water. A cube block of side 50mm floats by a distance of 37.5mm in the fresh water as shown in the figure.

asked Jul 13, 2021 in Physics Form 4 by anony mous

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1 answer

What do you understand by the term absolute zero temperature.

asked Jul 13, 2021 in Physics Form 3 by anony mous

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2 answers

A barrel is rolled up a ramp of 6m long, The barrel weighs 400N and is raised through a height of 1.5m. If a force of 120N is applied parallel to the inclined plane, calculate.

asked Jul 13, 2021 in Physics Form 1 by anony mous

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1 answer

The diagram below shows a suspended uniform beam of weight 4N in equilibrium under the action of the force shown. The weight of the magnet is 8N.

asked Jul 13, 2021 in Physics Form 1 by anony mous

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1 answer

A uniform light rod AB 50cm long in equilibrium when forces 3N, 5N and X acts on it as shown in the figure below. Find the magnitude of the force X

asked Jul 13, 2021 in Physics Form 2 by anony mous

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1 answer

The figure below shows levels of water in two vertical tubes T1 and T2.

asked Jul 13, 2021 in Physics Form 1 by anony mous

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1 answer

A student used the measuring instrument below to measure the thickness of a cylindrical wire. If the wire is 10cm long, determine the volume of the wire.

asked Jul 13, 2021 in Physics Form 1 by anony mous

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1 answer

The diagram below shows a mercury manometer with some dry gas trapped with the other limp open.

asked Jul 13, 2021 in Physics Form 1 by anony mous

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1 answer

Define centripetal acceleration.

asked Jul 13, 2021 in Physics Form 4 by anony mous

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1 answer

State one condition necessary for a body to be in equilibrium.

asked Jul 13, 2021 in Physics Form 1 by anony mous

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1 answer

Sketch a velocity - time graph on the axes provided for

asked Jul 13, 2021 in Physics Form 3 by anony mous

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1 answer

2.5 kg of water at 20°C is heated in an electric kettle connected to 250V supply. If it took 20 minutes to boil at 100°C specific heat capacity of water is 4200JKg−1 k−1. Determine the power of the kettle element.

asked Jul 13, 2021 in Physics Form 3 by anony mous

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1 answer

State Newton's second law of motion. (1 mark) A resultant force of 10N acts on a body of mass 0.4kg starting from rest. Find the distance travelled after 10 seconds.

asked Jul 13, 2021 in Physics Form 3 by anony mous

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1 answer

A pointer attached to a spring balance points to 21.5 cm on a scale when no weight is suspended from it. When a mass of 165g is hanged from it, it points 38.0 cm.

asked Jul 13, 2021 in Physics Form 2 by anony mous

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1 answer

The figure below shows the cross-section of a diffusion cloud chamber used to detect radiation from radioactive sources.

asked Jul 8, 2021 in Physics Form 4 by anonymous

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1 answer

The graph below shows radioactive decay of iodine.

asked Jul 8, 2021 in Physics Form 4 by anonymous

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1 answer

A radioactive carbon-14 decays to nitrogen by beta particles as shown below.

asked Jul 8, 2021 in Physics Form 4 by anonymous

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