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A plane is doing a parabolic weightless flight to train astronauts. The plane gets up enough speed to shut off its engines when it gets on an arc with radius of 1 km and glide to the top of the semicircle, where the gravity must be zero.
A 50 kg person climbing a rope slides down after reaching the top. find The frictional force acting upward on the person
The mass of the blue (dark) puck in the figure below is 18.3% greater than the mass of the green (light) one. Calculate the speed of the blue puck after the collision
An airplane is flying with a velocity of 93.0 m/s at an angle of 22.0^circ above the horizontal. When the plane is a distance 119 m directly above a dog that is standing on level ground, a suitcase drops out of the luggage compartment.
The distance between an object and its image formed by a diverging lens is 4.70 centimeter. The focal length of the lens is -2.40 centimeter. Evaluate what is the object distance
A 5.00 kg sack of flour is liftedvertically at a constant speed of 4.00 m/s through a height of13.0 m. How much work is done on the sack by the lifting force
A diver springs upward from a board that is 4.50 m above the water. At the instant she contacts the water her speed is 12.5 m/s and herbody makes an angle of 84.9 ° with respect to the horizontal surface of the water. Determine her initial velocit..
a system executes a power cycle while receiving 800 kj by heat transfer at a tem-perature of 1600 k and discharging 120
A siren at rest has a frequency f0. Standing at a crosswalk, a student hears a frequency f' from the siren in an approaching police car. find the speed of the car
one end of a uniform 4.0 m long rod of weight is supported by a cable. the other end rests against a wall where it is
A raft of mass M with a person of mass m aboard stays motionless on the surface of a lake. Obtain the horizontal component of the average force with which the person acted on the raft during the motion
A 55.0-turn circular coil of radius 4.80 cm can be oriented in any direction in a uniform magnetic field having a magnitude of 0.495 T. Find the magnitude of the maximum possible torque exerted on the coil
A wire with a resistance of 5.1 ? is drawn out through a die so that its new length is 3 times its original length. Find the resistance of the longer wire
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