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A baseball player pitches a fastball toward home plate at aspeed of 47 m/s. The batter swings, connects with the ball of mass141 g, and hits it so that the ball leaves the bat with a speed of39 m/s. Assume that the ball is moving horizontally just before andjust after the collision with the bat.
What is the magnitude of the change in momentum of theball?
What is the impulse delivered to the ball by the bat?
If the bat and ball are in contact for 0.001s, whatis the magnitude of the average force exerted on the ball by the bat?
a small negatively charged particle has a charge of 1.33e-6 c and a mass of 8 mg. it moves from point a where the
A very hard rubber ball (m = 0.7 kg) is falling vertically at 9 m/s just before it bounces on the floor. find the average force exerted by the floor on the ball
Refrigerant-134a enters a compressor at 180 kPa as a saturated vapour with a flow rate of 0.35 m3/min and leaves at 700 kPa. The power supplied to the refrigerant during compression process is 2.35 kW. What is the temperature R-134a at the exit of th..
In SI units, the electric field in an electromagnetic wave is described by Ey = 100 sin(107x - ?t ). What is the frequency of the EM wave
for a particle in a one demention box, the ground state wave function is: psi=(2/L)^1/2 sin(piX/L), What is the probebility that the particle is in the right-hand half on the box
A uniform electric field of magnitude 300 V/m is directed in the positive x direction. A +10.0 µC charge moves from the origin to thepoint (x, y) = (20.0 cm, 50.0 cm).
A heat engine operates in a Carnot cycle between 83.0°C and 353°C. It absorbs 21004 J of energy per cycle from the hot reservoir. What is the mechanical power output of this engine
How long did it take for a message sent from Earth to reach the first astronauts on the way to the moon when they were still 12100 km away from the moon
A turtle ambles leisurely-as turtles tend to do-when it moves from a location with position vector r1,x = 1.49 m and r1,y = -2.77 m in a lettuce garden to another location, with position vector r2,x = 3.77 m and r2,y = -4.19 m, where the lettuce a..
When four people with a combined mass of 319 kg sit down in acar, they find that the car drops 2.5 cm lower on its springs. What is the frequency of the car's vibration
a 50-g bullet is fired from a rifle having a barrel 0.540 m long. choose the origin to be at the location where the
Consider the circuit in the figure below. Take emf = 6.00 V, L = 7.00 mH, and R = 6.00 O. What is the value of the final steady-state current
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