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Assume you are a medieval knight attacking a castle with a canon. The ball leaves the cannon with a speed of 40.9 m/s. The barrel's angle with respect to the ground is 36.9 deg, and you make a perfect hit on the tyrant's chamber which is at the same level as the cannon's muzzle (H=0). What is the time of flight of the cannon ball?
The concepts for finding the change in length of a rod.
Precisely 1.10 after the speeder passes, the policeman steps on the accelerator. If the police car's acceleration is 2.10 m/s2, Explain how much time elapses after the police car is passed until it overtakes the speeder
A crane lifts a 650-{\rm kg} beam vertically upward 23 {\rm m} and then swings it eastward 18 {\rm m}. How much work does the crane do
A vertical tube open at the top contains 5.2 cm of oil (density 0.82 g/cm^3) floating on 5.2 cm of water. Find out the gauge pressure at the bottom of the tube.
Skier loses a ski at the top of a 98 m hill. The ski proceeds to glide down the hill frictionless. Illustrate what speed is the ski traveling at the bottom of the hill?
A nonreflective coating (n = 1.40) covers the glass (n = 1.52) of a camera lens. Assuming that the coating prevents reflection of a specific wavelength (vacuum = 535 nm), find the minimum nonzero thickness that the coating can have.
Unpolarized light is incident on a linearly polarizing filter oriented 30 degrees with respect to the horizontal. find the final intensity that emerges from the last polarizing filter
you apply a potential difference of 4.5 volts between the ends of a wire that is 2.5 m in length and .654mm in radius. What length of nichrome wire will you use
Initially, a swift-moving hawk is moving due west (in the -x direction) with a speed of 60 m/s; 5.0 s later it is moving due north (in the +y direction) with a speed of 25 m/s.
a 15 kg hoop of radius 1 m is spinning at a rate of 4 rotations per second, What is the speed in rotations per minute
question1two vessels a and b each have n molecules of the same perfect monoatomic gas. firstly the two vessels are
Determine the magnitude and direction of impulse delivered to the ball by the floor.
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