Field Theory Answers

A cage is lowered down a pit shaft, 600m deep in 46 seconds. What is its average speed in meters per second and kilometers per hour?

A boat is towed on a river so that its speed in still water would be 3 meters per second. If the river flows at the rate of 2 meters per second determine at what inclination to the direction of flow of the river must the boat be headed so that the motion of the boat may be at right angles to the current, if the width of the river is 40 meters, how long will it take for the boat to cross from one bank to another

The power required to lift a certain body through a distance of 30m in 6 seconds is 200 watts. Calculate workdone and mass of the body.

A helical spring is extended by a force which increase uniformally from 0 to 600 newtons. The corresponding extension of the spring is 200mm. What is the total work done?

Calculate the velocity of water in a pipe of cross sectional area 0.02sqaure meters which delivers 115 liters of water per second.

In a rectangular coordinate system, a most of 2×10^-9 kg is a placed at the origin of the coordinates and a most of 25×10^-9 kg is at the point of x=6m and y=0m.

What is the gravitational field at 1.x=3m,y=0m 2.x=3m,y=4m

If global warming raises 1 degree how much would the world expand, and how far would the tectonic plates separate causing more earthquakes. Seems 2 percent would be even worse.

An object with an initial velocity of 4 m/s moves along a straight axis under constant acceleration. 3 seconds later, its velocity is 14m/s. How far did it travel during this period

find the magnitude of an electron's electric field if the field itself is 50.0 cm away from it

What is the relationship between frequency , velocity and length in the first harmonic