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A tennis player receives a shot with the ball (0.0600 kilogram) traveling horizontally at 58.0 m/s and returns the shot with the ball traveling horizontally at 34.0 m/s in the opposite direction. (Suppose the initial direction of the ball is in the-x direction.)
(a) Calculate the impulse delivered to the ball by the racket?
(b) Calculate what work does the racket do on the ball?
A point source of light is at the bottom of a koi pond, at a depth of 0.525 meters. What is the radius of the circle of light formed on the water's surface
An electric motor consists of a 70 turn coil 3.0 centimeter in diameter, mounted between the poles of a magnet that produces a 0.07 T field. Calculate the maximum torque developed by the motor
A sound wave in air has a frequency of 264Hz and travels with a speed of 347m/s. How far apart are the wave crests
Charge 1 is -3x10^-6C and has a velocity of 9x10^6 m/s while charge 2 is 8x10^-6C, What is the total magnetic field at the origin
If a canon ball is launched with a velocity of 90m/s at anangle of 35 degrees, How fast is it moving upward and how fast isit moving across land
The current in an RL circuit is zero at time t = 0 and increases to half its final value in 3.6 s. What is the time constant of this circuit
The bottom of an aluminum pot has an area of 157 cm2 and a thickness of 3.25 mm. How many watts are needed to boil water at this rate
A warehouse worker pushes a crate along the floor, by a force of 5.0N that points downward at an angle of 45° below the horizontal. find the horizontal component of the push.
A car moves with an initial velocity of 5m/s and is subjected to a deceleration of 3m/s2 for 2 seconds. Calculate the distance the car traveled
there are two telescopes observing at night. the first telescope is 0.3m and has a focal ratio of f8. the second
A projectile is launched with an initial speed of 50 m/s at an angle of 35° above the horizontal, What is the projectile's velocity at the highest point of its trajectory
Two hydrogen atoms collide head on. The collision brings both atoms to a halt. Immediately after the collision, both atoms emit a 121.6 nm photon. What was the speed of each atom just before the collision?
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