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# Monthly Archives: April 2016

## 1…2…3… My Blog

123myblog – random reflections on anything under th sky and beyond

Source: 1…2…3… My Blog

## Resistance In Circuit

Please solve this problem. And please keep in mind that i have just passed 10th standard guyz.

## units and measurement

THE LENGTH OF UNIFORM ROD IS 100.0CM AND RADIUS IS 1.00CM.IF LENGTH IS MEASURED WITH METER ROD HAVING LEAST COUNT 1MM AND RADIUS IS MEASURED WITH VERNIER CALIPERS HAVING LEAST COUNT 0.1MM,THE PERCENTAGE ERROR IN CALCULATED VOLUME OF CYLINDER IS?

## Newton’s 2nd Law, 2 Crates held by a Pulley

Two crate A and B are connected with a rope with negligible mass over a frictionless pulley as represented below. The crates are at rest. Crate A has an unknown mass and hangs vertically to the right of the slope and crate B with mass 22 kg, hangs on the slope to the left. The slope makes and angle of 67 degrees with the horizontal. The static coefficient of friction between crate B and the surface of the slope is 1.716. The frictional force is up the slope.”

The Answer is suppose to be 5.5Kg, but I don’t know how to get it.

## Find the resistance between A & B

How to find resistance here? what will be resistance?

## Physics – Bungee Jumping Problem

A 55kg woman bungee jumps from a bridge and reaches a maximum velocity of 24.2m/s. The bridge is 60m above the water. When the woman is at the bottom of her trajectory, she is 9 m above the water.
What is the spring constant of the bungee cord?

## Coulomb’s law

at each of the four corners of a sqare of side A, a charge +q is placed freely. what charge should be placed at the centre of the sqare so that whole  system be in equilibrium