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1. Two bowling balls, each with a positive charge of 2.5 x 10 ^-5 are located 23.0 cm apart. The size of the electric force between them is ___N.
Report your answer to 2 decimal places
2. A rock of mass 4.00kg is dropped from a stationary hot air balloon. Its potential energy at the top is 18,000 J. When its potential energy is 10,000 J, the rock is falling at ____ m/s
a 3.77-kg ball of clay is thrown downward from a height of 3.47 m with a speed of 4.81 ms onto a spring with k 1690
he plane is traveling horizontally at 150.0 m/s at a height of 70.0 m above the ground. Illustrate what horizontal distance does the package travel before striking the ground?
a basketball leaves a players hands at a height of 2.20m above the floor. the basket is 2.90m above the floor. the
a stationary radar operator determines that a ship is 13 km south of him. an hour later the same ship is 25 km
Calculate the time in seconds for a solid sphere starting at rest to roll down an incline without slipping.
Two steel juggling balls each carry a charge of 2.75 μC. There is a repulsive force between them of 1.25 Newton. Find the distance between the centers of the two balls
Many chemical reactions release energy. Suppose that at the beginning of a reaction, How much electric potential energy was lost in this reaction (in units of eV)
A 5.66 kilogram object falls freely (neglect air resistance), after being dropped from rest. Compute the initial kinetic energy, the final kinetic energy, and the change in kinetic energy
A city encompasses 820km2. If an average of 2 inches of rain fell on the cityduring a summer storm, how many kilograms of rainfell
A railroad car with a mass of 2.46 x 10^4 kg moving at 3.25 m/s collides and joins with two railroad cars already joined together, each with the similar mass as the single car and initially moving in the same direction at 1.49 m/s.
The total mass of helium in a balloon is 131 kg. What is the volume of the balloon
for many years the posted highway speed limit was 88.5kmhr 55mihr but in recent years some rural stretches of highway
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