a train travels 81 kilometers in 2 hours and then 88 kilometers in 2 hours what is its average speed

The 80.0-lb boy at a is suspended from the cable that passes over the quarter circular cliff rock. determine if it is possible for the 190-lb woman to hoist him up. the coefficient of static friction between the cable and the rock is μs = 0.

A tugboat pulls a ship with a constant net horizontal force of 5.00 x 10 to the 3 power n and causes the ships to move through a harbor how much work is done on the ship if it moves distance of 3.00 kilometers

A spring with spring constant of 34 N/m is stretched 0.12 m from its equilibrium position. How much work must be done to stretch it an additional 0.062 m

Why does a balloon that is rubbed on someoneâs shirt stick to a wall at a party?

How many grams of benzene, C 6 H 6, can be melted with 39.8 kJ of heat energy? The molar heat of fusion of benzene is 9.95 kJ/mol.

A plastic rod rubbed with a duster attracts bits of paper becauseof a what force

What is the particle that an atom can lose or gain in order to form a charged ion

If you have 0.306 m3 of water at 25.0°C and add 0.102 m3 of water at 95.0℃, what is the final temperature of the mixture? Use 1000 kg/m3 as the density of water at any temperature. Number O Previous ⓧ Give Up & View Solution.

If b is the amplitude of the magnetic field vector, find the complete expression for the magnetic field vector b⃗ of the wave.

An electron and a proton are separated by a distance of 1 m. What happens to the size of the force on the first electron if a second electron is placed next to the proton?