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A cosmic ray plows into Earth's upper atmosphere, liberating a shower of subatomic particles. One of these particles moves downward 3.2 km, then undergoes a collision after which it moves 1.6 km at 27 deg. northward of the vertical. It then undergoes another collision that sends it moving horizontally eastward for 2.1 km before it annihilates with another particle. What is the magnitude of its displacement ?
A grinder consists of a solid 15 kg disk with a diameter of 57 cm. A when active, the disk rotates at a rate of 83 rad/sec. find the rate of angular acceleration of the disk
It takes a force of 80.0 N to compress the spring of a toy popgun 0.200 m to "load" a 0.180-kg ball. With what speed will the ball leave the gun
An AC voltage with an amplitude of 105 Volt is applied to a series combination of a 226 x 10-6 F capacitor, a 106 mH inductor, and a 17.1 ohm resistor. Find the power factor at this frequency
A football player who weighs 85 kg is carrying the ball directly up field at a rate of 15 km/hr. What is the initial momentum of the offensive player
A 20.0 kg wood ball hangs from a 2.0-m-long wire. The maximum tension the wire can withstand without breaking is 400.0 N. What is the greatest speed the wood ball can have
the pericarppart of a popcorn kernel is a small container of liquid water. when the poppcorn is heated to about 180 degrees C, what is the change in entropy of the water due to the vaporization and expansion
q1. a home fragment found in a cave believed to have been inhabited by early humans contains 0.21 times as much14c as
What average force is required to stop an 1100-kg car in 8.0 seconds if the car is traveling at 95 km/h
The resistance of a bagel toaster is 17 ?. To prepare a bagel, the toaster is operated for one minute from a 120-V outlet. How much energy is delivered to the toaster
You throw a ball torwards a wall at speed 21 m/s and an angle of 40 degrees above the horizontal. The wall is 22.0 m from the release point of the ball.
An archer fires an arrow by an initial velocity of 21 m/s at an angle of 50 from the horizontal. The arrow lands on a hill that is 5.0 m higher than its initial height. Ignore the effects of air resistance. What speed does the arrow have when it land..
In an adventure movie, a 65.0-kg stunt woman falls 7.80 m and lands in a huge air bag. Her speed just before she hit the air bag was 11.1 m/s. What is the total work done on the stunt woman during the fall
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