Physics Archives - Page 23 Of 439

If the uncertainty in the measurement of the position of a particle is 5.0 x 10^-10m, the uncertainty in the momentum of the particle is?

by Sunday | Nov 14 | Physics JAMB

A. 1.32 x 10-44Ns B. 3.30 x 10-44Ns C. 1.32 x 10-24Ns D. 3.30 x 10-24Ns Correct Answer: Option C – 1.32 x 10-24Ns

Given that young’s modulus for aluminium is 7.0 x 10¹°Nm−² and density is 2.7 x 10³kgm−³. Find the speed of the sound produced if a solid bar is struck at one end with a hammer

by Sunday | Nov 14 | Physics JAMB

A. 5.1 x 103ms-1 B. 4.2 x 103ms-1 C. 3.6 x 103ms-1 D. 2.8 x 103ms-1 Correct Answer: Option A – 5.1 x 103ms-1

A force of 100N was used to kick a football of mass 0.8kg. Find the velocity with which the ball moves if it takes 0.8s to be kicked?

by Sunday | Nov 14 | Physics JAMB

A. 32ms−¹ B. 50ms−¹ C. 64ms−¹ D. 100ms−¹ Correct Answer: Option D – 100ms−¹

An electron makes a transition from a certain energy level Ek to the ground state E0. If the frequency of emission is 8.0 x 10^14Hz. The energy emitted is?

by Sunday | Nov 14 | Physics JAMB

A. 8.25 x 10-19J B. 5.28 x 10-19J C. 5.28 x 1019J D. 8.25 x 1019J Correct Answer: Option B – 5.28 x 10-19J Explanation Atomic emission and absorption of energy is usually in packets referred to as photon or quantum of energy of magnitude E =hf, where f is the...

In the calibration of an ammeter using faraday’s laws of electrolysis, the ammeter reading is kept constant at 1.2A. If 0.990g of copper is deposited in 40 minutes; the correction to be applied to the ammeter is

by Sunday | Nov 14 | Physics JAMB

A. 0.03A B. 0.04A C. 0.05A D. 0.06A Correct Answer: Option C – 0.05A

If the uncertainty in the measurement of the position of a particle is 5.0 x 10^-10m, the uncertainty in the momentum of the particle is?

Given that young’s modulus for aluminium is 7.0 x 10¹°Nm−² and density is 2.7 x 10³kgm−³. Find the speed of the sound produced if a solid bar is struck at one end with a hammer

A force of 100N was used to kick a football of mass 0.8kg. Find the velocity with which the ball moves if it takes 0.8s to be kicked?

An electron makes a transition from a certain energy level Ek to the ground state E0. If the frequency of emission is 8.0 x 10^14Hz. The energy emitted is?

In the calibration of an ammeter using faraday’s laws of electrolysis, the ammeter reading is kept constant at 1.2A. If 0.990g of copper is deposited in 40 minutes; the correction to be applied to the ammeter is

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