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King Arthur's knights fire a cannon from the top of the castle wall. The cannonball is fired at a speed of 42 m/s and an angle of 26°. A cannonball that was accidentally dropped hits the moat below in 1.2 s.
How far from the castle wall does the cannonball hit the ground?
What is the ball's maximum height above the ground?
Light hits the surface of water at an incident angle of 36° with respect to the normal line. What is the angle between the reflected ray and the refracted ray?
A converging lens of focal length 7.550cm is 20.5cm to the left of a diverging lens of focal length -6.50cm, find the location of the coins final image
A billiard ball strikes and rebounds from the cushion of a pool table perpendicularly. The mass of the ball is 0.16 kg. The ball approaches the cushion with a velocity of +1.6 m/s and rebounds with a velocity of ?1.2 m/s
A disk of radius R = 9 cm is pulled along a friction less surface with a force of F = 15 N by a string wrapped around the edge. At the instant when d = 28 cm of string has unwound off the disk, what is torque exerted about the center of the disk.
a major leaguer hits a baseball so that it leaves the bat at a speed of 28.5 and at an angle of 35.7 above the
An electron field of 8.50e5 V/m is desired between two parallel plates each of area 45cm^2 and seperated by 2.45 mm of air
The plates of a parallel-plate capacitor are 3.50mmapart, and each carries a charge of magnitude 75.0nC, What is the area of each plate
particle with a mass of 6.64 x 10-27 kg and a charge of 3.2 x 10-19 c is accelerated from rest through a potential
When a potential difference of 12 V is applied to a wire 5.6 m long and 0.28 mm in diameter the result is an electric current of 1.2 , What is the resistivity of the wire
Camera A has a lens with an aperture diameter of 8.30mm, What exposure time should be used with camera B in photographing the same object with the same film if this camera has a lens with an aperture diameter of 23.5mm
Two 10.0 kg masses are hanging from the ceiling of an elevator that is accelerating upwawrd at 2.00 m/s. What is the tension in each rope
A thin glass rod forms a semicircle of radius r = 3.03 cm. Charge is uniformly distributed along the rod, with +q = 1.05 pC in the upper half and -q = -1.05 pC in the lower half
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