A boy standing 408m from a wall blew a trumpet and heard the echo 2.4s later. Calculate the speed of the sound
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2024
The dimension of power is
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An example of a non-rechargeable cell is
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The acceleration of a free fall due to gravity is not a constant everywhere on the Earth's surface because
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2024
Find the amount of current required to deposit 0.02kg of metal in a given electrolysis for 120 seconds. [electro chemical equivalent of the metal = 1.3 x 10\(^{-7}\)kgC\(^{-1}\)]
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2024
Using the circuit above, at resonance
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Photometer is used to measure
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As per Faraday's laws of electromagnetic induction, an e.m.f is induced in a conductor whenever
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One of these is not the use of an electroscope
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The bursting of water pipes during very cold weather, when the water in the pipes form ice could be attributed to
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The velocity ratio of an inclined plane at 60º to the horizontal is
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The device for measuring the angle of dip is
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The diaphragm in the camera is similar to what part of the eyes?
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In the diagram above, the galvanometer is converted to
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An air force jet flying with a speed of 335m/s went past an anti-aircraft gun. How far is the aircraft 5s later when the gun was fired?
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2024
Two points on a velocity-time graph have coordinates (2s, 5m/s) and (4s, 15m/s). Calculate the mean acceleration
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2024
Two capacitors of 0.0003μF and 0.0006μF are connected in series, find their combined capacitance.
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An accumulator is 90% efficient. If it gives out 2700J of energy while discharging, how much energy does it take in?
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2024
Calculate the value of electric field intensity due to a charge of 4μC if the force due to the charge is 8N
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2024
What is the colour of red rose under a blue light?