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A player bounces a 0.47 kilogram soccer ball off her head, changing the velocity of the ball from vi = (8.5m/s)x + (-2.8m/s )y to vf = (6.0m/s )x + (3.6m/s )y.
Part A If the ball is in contact with the player's head for 6.7 milliseconds, find the direction of the impulse delivered to the ball?
Part B Find the magnitude of the impulse delivered to the ball?
A person takes in a breath of -2 degrees C air and holds it until it warms to 37.5 degrees C. Determine the work done by the air on the lungs
An earth satellite moves in a circular orbit with an orbital speed of 6200 m/s. Find the time of one revolution of the satellite
A refracting telescope is used to view the Moon (diameter 3480 km, distance from Earth 385,000 km). find the diameter of the image produced by the objective
In order to determine the mass of a molecule, first an electron is removed from the molecule. The resulting ion is accelerated from rest by an electric potential difference 2.7 104 V, Find the mass of the ion
a 20kg door is spun for 27 s at an anglular speed of 1.2 rev/s by two seperate simultaneous forces. One pushes with force of 53 N, What is the work done by torque spinning the door
You place 73 moles of hydrogen gas in a balloon of volume 2.6 m3, and find the pressure to be 1.4 times atmospheric pressure. What is the typical speed of a hydrogen molecule?
question1a 0.145-kg baseball pitched horizontally at 39 ms strikes bat and is popped straight up to a height of 32 m.
A certain string can withstand a maximum tension of 31 N without breaking. A child ties a 0.33 kg stone to one end and, holding the other end, What is the speed of the stone as the string breaks
in a simple model of the hydrogen atom, the electron moves in a circular orbit of radius 0.053 nm around a stationary proton. How many revolutions per second does the electron make
Now assume that a strong, uniform magnetic field of size 0.55 T pointing straight down is applied. What is the size of the magnetic force on the wire
Find the power in sideband, total power, carrier power, carrier rms voltage and the peak voltages for carrier and sidebands of AM transmitter.
A meter stick is supported on a fulcrum at the 17 cm mark. A 0.70 kg object is hung from the zero end of the meter stick, What is the mass of the meter stick
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