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Question1
If an astronaut can throw a certain wrench 12.0{rm m} perpendicularly upward on earth, how high could he throw it on our moon if he gives it the similar starting speed in both places?
Question2
A person travels by car from one city to another. She drives for 35.8 min at 79.4 km/h, 10.7 min at 109 km/h, 41.1 min at 37 km/h, and spends 15.4 min along the way eating lunch and buying gas.
Find out the average speed for the trip.
Question3
A plane flies from base camp to Lake A, 205 km away in the direction 20.0° north of east. After dropping off supplies it flies to Lake B, which is 170 km at 30.0° west of north from Lake A. Graphically determine distance and direction from Lake B to the base camp.
Two equally charged insulating balls each weigh 0.10 g and hang from a common point by identical threads 30 cm long. What is the magnitude of the charge on each ball
A 75 g Frisbee is thrown from a point 1.2 m above the ground with a speed of 14 m/s. find the reduction in Emec of the Frisbee-Earth system
Two point charges are separated by 6 cm. THe attractive force between them is 20N. What is force between them when they are separated by 9 cm? What is the equation used to arrive at this reply?
A physical pendulum is composed of a 1.4 m rod with mass mr = 0.5 kg and a solid sphere with mass ms = 2.0 kg, What is the angular frequency of the oscillation
A truck is traveling at 11.4 m/s down a hill when the brakes on all four wheels lock. How far does the truck skid before coming to a stop
a jet engine suspended beneath the wing of an airplane. The weight of the engine is 11800 N, find the magnitude of the torque due to the weight
A reversible engine takes in 555 joules per second and exhausts 482 watts. how much power does it produce
Two negative point charges are separated by 11.0cm and feel a mutual repulsive force of 1.85?N . The charge of one is three times that of the other. How much charge does each have? in nanocoulumbs
A hunter is standing on flat ground between two vertical cliffs that are directly opposite one another. find the distance between the cliffs
A 32.5-g glass thermometer reads 24.1?C before it is placed in 131mL of water. What was the original temperature of the water
Water is discharged from a large pump and travels at an average velocity of 48 ft/sec. What is the kinetic energy of each lbm of water leaving the pump
A ring of radius R has uniform charge per unit lenght ? C/m (?>0), and z is the dince along its axis. Explain why the electric field must be zero at the center of the ring
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