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Problem: A man wants to throw a rock across a river that is 57m wide,
Part A: What is the minimum initial speed necessary to get the rock across the river?
Thanks in advance that solve the above problem.
An antelope moving with constant acceleration covers thedistance 75.0 m between two points in time 6.00 s. Its speed as it passes the second point is 15.8 m/s. What is its speed at the first point
suppose that a uniform magnetic field is everywhere perpendicular to this page. the field points directly upward toward
A fairground attraction called The Rotor (shudder) is spinning drum with a movable floor that is dropped down as the drum speeds up. find what rotation rate is required before the floor is dropped
an air-track glider attached to a spring oscillates between the 10 cm mark and the 60 cm mark on the track. the glider
It costs 2.6 cents to charge a car battery at a voltage of 12 {\rm V} and a current of 15 {\rm A} for 120 minutes. What is the cost of electrical energy per kilowatt-hour at this location
A pipe comes diagonally down the south wall of a building, making an angle of 45 degree with the horizontal. Find the angle between the south-wall and west-wall sections of the pipe
A woman hangs by her feet from "gravity boots" that support her weight from above. What is the average blood pressure in a major artery in her ankle
what velocity would a proton need to circle earth 1300 km above the magnetic equator where earths magnetic field is
A Carnot engine operates between a high temperature reservoir at 492 K and a river with water at 290 K. how much work per cycle does it perform
Transcranial magnetic stimulation (TMS) is a noninvasive technique used to stimulate regions of the human brain. Determine the induced emf within a circle of tissue of radius 1.9 mm
A spacecraft moving away from Earth emits a 4306 Hz signal. A scientist on Earth measures thesignal to be 4305 Hz. What is the speed of the spacecraft relative to Earth
A 70 turn coil of radius 4.6 cm rotates in a uniform magnetic field having a magnitude of 0.45 T. find the magnitude of the maximum torque exerted on the coil
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