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You throw a 22.0 N rock into the air from ground level and observe that, when it is 10.0 m high

You throw a 22.0 N rock into the air from ground level and observe that, when it is 10.0 m high, it is traveling upward at 16.0 m/s .Use the work-energy principle to find the rock’s speed just as it left the ground. (m/s)Use the work-energy principle to find the...

A 80 kg window cleaner uses a 18 kg ladder that is 5.9 m long. He places one end on the ground 2.9 m

A 80 kg window cleaner uses a 18 kg ladder that is 5.9 m long. He places one end on the ground 2.9 m from a wall, rests the upper end against a cracked window, and climbs the ladder. He is 2.7 m up along the ladder when the window breaks. Neglect friction between the...

A circular coil of radius 10.5 cm is located in a region of magnetic field where B(t) = (+0.1 T/s)

A circular coil of radius 10.5 cm is located in a region of magnetic field where B(t) = (+0.1 T/s)t and with the magnetic field oriented perpendicular to the plane of the loop. Find the magnitude of the induced EMF in this loop at t = 11.5 s.

A planet of mass m = 9.65 × 1024 kg is orbiting in a circular path a star of mass M = 6.35

A planet of mass m = 9.65 × 1024 kg is orbiting in a circular path a star of mass M = 6.35 × 1029 kg. The radius of the orbit is R = 8.95 × 107 km. What is the orbital period (in Earth days) of the planet?

When a 25.0-V emf device is placed across two resistors in series, a current of 12.0

When a 25.0-V emf device is placed across two resistors in series, a current of 12.0 A is flowing in each of the resistors.When the same emf device is placed across the same two resistors in parallel, the current through the emf device is 58.0 A. What is the magnitude...
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