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A 70.0 kg football player leaps straight up into the air (with no horizontal velocity) to catch a pass. He catches the 0.430 kg ball precisely at the peak of his jump, when he is 0.437 meters off the ground. He hits the ground 0.0358 meters away from where he leapt. If the ball was moving horizontally when it was caught, how fast was the ball travelling?
.A cosmic-ray proton in interstellar space has an energy of 10.0 MeV and executes a circular orbit having a radius equal to that of Mercury’s orbit around the Sun (5.80 m). Illustrate what is the magnetic field in that region of space?
Suppose a duck lives in a universe in which h = 2? J · s. The duck has a mass of 2.70 kg and is initially known to be within a pond 1.90 m wide. determine the uncertainty in the duck's position after this time interval
A simple pendulum in a science museum entry hall is 3.51m long, has a 1.25kg bob at its lower end, and swings with an amplitude of 10.50 degrees. How much time does the pendulum take to swing from its extreme right side to its acute left side.
A car is traveling around a horizontal circular track with radius r = 240 m at a constant speed v = 17 m/s, What is the y component of the car's acceleration when it is at point B
A higway curve with a radius of 400m is banked properly for a car traveling 120km/h. how much sideways force must the tires exert
A 15.00 block is attached to a very light horizontal spring of force constant 450 and is resting on a smooth horizontal table. Suddenly it is struck by a 3 stone travelling horizontally at 8 to the right, whereupon the stone rebounds at 2.00 horizont..
Two 19 Ohm resistors connected in parallel are then connected in series to a 10 Ohm resistor. What is the current through the 10 Ohm resistor
define How long are the skid marks. calculate the time it takes the sled to go 21 m down the slope.
The yellow light from a helium discharge tube has a wavelength of 587.5 nm. calculate the number of lines per centimeter on the grating
A parallel- plate capcitor of capacitance 2.0X10^-10 F is oppositely charged with 3.0x10 ^-8 C charge. The distance between the plate is 0.5mm. What is the area on each plate
A square loop 15 cm on a side lies in the xy plane. Its resistance is .55 ohm. A magnetic field points in the +z direction, What is the direction of the induced current in the loop
During a recent thunderstorm the wind was blowing past your roof at 40 m/s. Assuming that the density of air is 1.20 kg/m^3, What is the net force experienced by the roof
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