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A man stands on the roof of a building of height 13.0and throws a rock with a velocity of magnitude 30.0 at an angle of 34.9 above the horizontal. You can ignore air resistance.(A) Calculate the maximum height above the roof reached by the rock.Take free fall acceleration to be 9.80(B) Calculate the magnitude of the velocity of the rock just before it strikes the ground.Take free fall acceleration to be 9.80(C) Calculate the horizontal distance from the base of the building to the point where the rock strikes the ground.Take free fall acceleration to be 9.80
A 0.500-kg glider, attached to the end of an ideal spring with force constant k=450 n/m, undergoes simple harmonic motion with an amplitude 0.040 m. Compute the maximum speed of the glider
A 64.0-kg runner has a speed of 5.50 m/s at one instant during a long-distance event. by what factor does his kinetic energy change
A coil has an inductance of 0.45 H and a resistance of 42 ohms. The coil is connected to a 5.6 V ideal battery. At what rate is the energy being dissipated
What percentage of the neutrons would not interact if the concrete slab were made 36.0 cm thick? I know this is 1.305x10^1. B) How many centimeters thick would the concrete need to be so that 18.0 per cent of the neutrons are transmitted?
a force of magnitude 7.50 N pushes three boxes with masses m1 = 1.30 kg, m2 = 2.80 kg, and m3 = 5.30 kg. Find the magnitude of the contact force between boxes 1 and 2
A string is wound around a metal wheel that is free to spin on a frictionless pivot. A hanging mass is connected to the other end of the string, What is the initial velocity of the hanging mass
An 39-turn circular coil of radius 22.1 cm carries a current of 3.37 A. What is the strength of the magnetic field
A machine part rotates at an angular speed of 0.66 rad/s; its speed is then increased to 3.0 rad/s at an angular acceleration of 0.66 rad/s2. Find the angle through which the part rotates
As expected, the predictions of Coulomb's law are well confirmed. You find that the forces are: repulsive? or attractive? 2. and that the magnitude of each force is?
A tetherball leans against the smooth, frictionless post to which it is attached. what is the force the pole exerts on the ball
A large block of copper initially at 20.0oC is placed in vat of hot water (80.0oC). For the first 1.0 J of heat that flows from the water into the block, find the entropy change of the block
Three 15-? resistors are connected in parallel. This arrangement is connected in series with a 10-? resistor. What is the effective resistance of the parallel portion of the circuit
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