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A home run is hit in such a way that the baseball just clearsa wall 21 m high, located 130 m from home plate. The ball is hit atan angle of 35° to the horizontal, and air resistance is negligible. (Assume that the ball is hit at a height of 1.0 m abovethe ground.)
a) Find the initial speed of the ball.____________ m/sb) Find the time it takes the ball to reach the wall.___________ sc) Find the velocity components of the ball when it reaches the wall.x-component________y-component________d) Find the speed of the ball when it reachesthe wall.________
Water is flowing in a horizontal pipe of variable cross section. Where the cross-sectional area is 1.10×10-2 m2, the pressure is 5.60×105 Pa and the velocity 0.80 m/s. In a constricted region where the area is 5.00×10-4 m2
A train is travelling up a 4.8^circ incline at a speed of 3.25m/s while the last car breaks free and begins to coast without friction.
The inductive reactance of an RLC circuit is 36ohm. If the frequency is doubled, what is the new inductive reactance
A proton is traveling due west with a speed of 4E5 m/s and enters a magnetic field of 5E -5 T directed at 30.0 degrees to the direction of the proton's motion, obtain the magnitude and direction of the force on the proton
Air in a piston-cylinder device is compressed from 25°C and 100 kPa to 500 kPa during a polytropic process for which Pv1.3 = constant. The air temperature after compression is
question1a rocket with mass m is fired vertically upward. at an instant it reaches an altitude of 800m and a speed of
A 0.050-kg bullet is shot to the right toward a 1.5-kg target initially at rest on a flat frictionless surface. calculate the impulse experienced by the bullet
A CD has a mass of 17 g and a radius of 6.0 cm. When inserted into a player, the CD starts from rest and accelerates to an angular velocity of 17 rad/s in 0.85 s. determine the net torque acting on it
q1. two point charges q1 -6.7 mu c and q2 3.0 mu c are located between two oppositely charged parallel plates. the
A ball is thrown on a projectile path with an initial vertical velocity of 30 m/s. find the initial horizontal velocity
A potential difference of 14 V is found to produce a current of 0.39 A in a wire of length 3.1 m with a uniform radius of 0.44 cm. What is the resistivity of the wire
A 68.4-kg skier coasts up a snow-covered hill that makes an angle of 25.5 ° with the horizontal. TWhat is the magnitude of the kinetic frictional force
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