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A 75 kg skier skis down a 20 degree slope. There is frictional force of 115 N and air resistance of 85 N. What is the resultant force working on the skier?
A 350g object on a frictionless, horizontal lab table is pushed against a spring of force constant 40.0N/cm, How fast is the object moving when it has gained half of the spring's original stored energy
After 10.0 second, a spinning roulette wheel at a casino has slowed down to an angular velocity of +2.00 rad/s. Find the angular displacement of the wheel
A series RLC circuit has a 242 Hz resonant frequency, and is driven by an AC voltage source at 315 Hz. Find the maximum voltage of the source
A car takes 9 s to go from v = 0 to v = 75 m/s at approximately constant acceleration. If you wish to find the distance travelled using the equation d = 1/2 at2, what value should you use for a.
A steel ball with mass 40.0g is dropped from a height of 2.00monto a horizontal steel slab and it rebounds 1.60m, calculate the impluse delivered to the ball during impact
Physics: How much time is required to row cross the river? How wide is the river?, A river man can row his boat at a speed of 2.5 m/s through still water. He wants to row directly across a river that has a current flowing at 1.5m/s
calculate a characteristic reynolds number for an aircraft cruising at 1000kmhr. make any assumptions necessary and
A freezer with a coefficient of performance of 3.53 is used to convert 1.61kg of water to ice in one hour. How much heat is discarded into the room that houses the freezer
q1. a system consists of a uniform electric field of 42.6 nc directed in the positive x direction together with a
A wire is formed into a120 turn loop whose diameter is 35 cm and the resistance of theloop is 4 ohms. The loop is on the floor a downward magnetic isincreasing according to the formula b(t) =4t^6+5t+2
a 4.8 kg dog stands on an 19 kg flatboat and is 6.1 m from the shore. he walks 2.2 m on the boat toward shore and then
Speedboat A negotiates a curve whose radius is 150 m. Speedboat B negotiates a curve whose radius is 190 m. Each boat experiences the same centripetal acceleration. What is the ratio vA/vB of the speeds of boats.
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