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A person stands on the edge of a roof 490m above the ground and throws a stone horizontally with an initial speed of 15 m/s. Neglecting air resistance.
Find (a) the time taken by the stone to reach the ground. and (b) the speed with which it hits the ground (g = 9.8 ms2).
An ac series circuit has 12 Ω resistance, 15 Ω inductive reactance and 10 Ω capacitative reactance. If an effective (rms) emf of 120 Volt is applied, estimate what is the power output
An astronaut on a strange planet finds that she can jump a maximum horizontal distance of 19.0 m if her initial speed is 2.80 m/s. What is the free-fall acceleration on the planet
A long solenoid has a diameter of 12.2 cm. When a current i exists in its windings, a uniform magnetic field of magnitude B = 22.7 mT is produced in its interior. Calculate the magnitude of the induced electric field
A solid uniform disk of mass M = 8.8 kg and radius R = 21 cm rests with its flat surface on a frictionless table (i.e., the axis of the cylinder is perpendicular to the table.) The diagram shows a top view. A string is wrapped around the rim of th..
An elevator is traveling upward at constant speed of 2.4 m/s. After 2.4 s has passed, the distance between the object and the elevator is
Consider three equally spaced and equal-intensity coherentsources of light. Determine the postions of maxima and minima
A empty sphere of radius 0.35 meter, with rotational inertia I = 0.052 kg m2 about a line through its center of mass, Determine what is its total kinetic energy now
A 3.00 kg block starts from rest at the top of a 33.0° incline and slides 2.00 m down the incline in 1.60s. Discover the acceleration of the block. Find the speed of the block after it has slid 2.00 m.
A sphere that is a perfect blackbody radiator has a radius of 0.130 m, Calculate the net rate at which the sphere radiates energy
An automobile moves at constant speed over the crest of ahill. The driver moves in a vertical circle of radius 20 m.What is the speed of the vehicle
What is the height h of the CM of the can and contents (d) If x is the height of the remaining soda at any given instant, find out x when com reaches its lowest point.
a standing wave is established in a 89 cm long string fixed at both ends. the string vibrates in 6 segments when driven
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