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Why can a single object have only kinetic energy, while potential energy requires interactions among objects or systems? Explain with real-world examples.
A helicopter is ascending vertically with a speed of 5.98. At a height of 149 above the Earth, a package is dropped from a window. How long till the package hits ground.
A shopper pushes a cart 23 m south down one aisle and then turns 90.0° west and moves 23 m. He then makes another 90.0° turn and moves 15 m. What is the largest possible displacement of the shopper
A high energy photon is scattered at an angle of ?=180.0° from an electron that is initially at rest. Find the energy of the incident X-ray photon
a 34g glass thermometer reads 22.1c before it is placed in 145 ml of water. when the water and thermometer come to
A rock climber throws a small first aid kit to anotherclimber who is higher up the mountain. What is the vertical height between the two climbers
How much charge passes during the starter motor
Your summer co-op is working as a safety inspector for NOAA. You are inspecting a submarine they will be using and they want to know the maximum safe depth it can operate at. What is the maximum depth the sub can go to without worrying about the wi..
A football is kicked 50.4 meters. If the ball is in the air 4.54 s, with what initial velocity was it kicked
A strong weightless rope has a mass m hanging from the middle of it, as shown. The tension force on each rope is 25 N, and the rope droops at an angle of 20.0°. How much mass is hanging from the rope?
A force platform is a tool used to analyze the performance of athletes measuring the vertical force that the athlete exerts on the ground as a function of time. What impulse did the athlete receive from the platform
A -2.3nC charge is on the x-axis at x1 = -7cm and a 2.5nC charge is on the x-axis at x2 = 11 cm. At what points on the y axis is the electric potential zero
When driving along the highway at 62.01 mph my tachometer reads 1,895.90 rpm. If my truck tires at 17.15 inches in radius, what is the ratio of the angular velocity of the tire's rpm's to the engine rpm's?
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