At what distance from the mean position is the kinetic energy of a particle performing S.H.M. of amplitude 8 cm, three times its potential energy?

by Manoj Jaiswar ( PMJ Sir ) August 27, 2022

In a workshop a worker measures the length of a steel plate with a Vernier callipers having a least count 0.01 cm. Four such measurements of the length yielded the following values: 3.11 cm, 3.13 cm, 3.14 cm, 3.14 cm. Find the mean length, the mean absolute error and the percentage error in the measured value of the length.

by Manoj Jaiswar ( PMJ Sir ) August 26, 2022

In Ohm's experiments , the values of the unknown resistances were found to be 6.12 Ω , 6.09 Ω, 6.22 Ω, 6.15 Ω. Calculate the mean absolute error, relative error and percentage error in these measurements.

by Manoj Jaiswar ( PMJ Sir ) August 26, 2022

Find the percentage error in kinetic energy of a body having mass 60.0 ± 0.3 g moving with a velocity 25.0 ± 0.1 cm/s.

by Manoj Jaiswar ( PMJ Sir ) August 26, 2022

Find the percentage error in kinetic energy of a body having mass 60.0 ± 0.3 g moving with a velocity 25.0 ± 0.1 cm/s.

by Manoj Jaiswar ( PMJ Sir ) August 21, 2022

The masses of two bodies are measured to be 15.7 ± 0.2 kg and 27.3 ± 0.3 kg. What is the total mass of the two and the error in it?

by Manoj Jaiswar ( PMJ Sir ) August 21, 2022

40000 litre of oil of density 0.9 g cc is pumped from an oil tanker ship into a storage tank at 10 m higher level than the ship in half an hour. What should be the power of the pump?

by Manoj Jaiswar ( PMJ Sir ) August 21, 2022

Advantages of potentiometer over a voltmeter. Also state about its disadvantages

by Manoj Jaiswar ( PMJ Sir ) August 13, 2022

Advantages of potentiometer Accuracy of any potentiometer can be increased by increa…

Why cell phone doesn't works in a closed elevator

by Manoj Jaiswar ( PMJ Sir ) August 10, 2022

For a cell phone to work, it must be able to recieve electromagnetic signals. When a c…

Which property of soft iron makes it useful for preparing an electromagnet

by Manoj Jaiswar ( PMJ Sir ) August 09, 2022

An electromagnet should become magnetic when a current is passed through its coil, b…

What is retentitivty and coercivity

by Manoj Jaiswar ( PMJ Sir ) August 09, 2022

The residual magnetic flux density or magnetization in a magnetic material when the ma…