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A cannon tilted upward at 20° fires a cannonball with a speed of 105 m/s. What is the component of the cannonball's velocity parallel to the ground?
A 5.00 g charged insulating ball hangs on a 27.0 cm long string in a uniform horizontal electric field. Given the charge on the ball is 2.00 ?C , find the strength of the field. The angle that the string makes with the vertical is 8.00° N/C.
A weightlifter bench-presses a 130.0 kg barbell from his chest to a height equal the length of his arms 0.850 m. How much work does he do
As a 16,500 kg jet plane lands on an aircraft carrier, its tail hook snags a cable to slow it down. what was the plane's landing speed
A single layer of dielectric lens coating is to be deposited on a lens made of a material with refractive index of 1.78. Determine the thickness and the refractive index of the layer
When a tuning fork of frequency 360 Hz is held above a tube filled with water the resonances are found when the water level is at 25cm and 75cm
One leg of a Michelson interferometer contains an evacuated cylinder of length L, having glass plates on each end, what is the index of refraction of the gas
A uniform charged disk of radius 30.0cm carries charge with a density of 8.00x10^-4 C/m^2. Calculate the electric field on the axis of the disk at
While the dried up seed pod of a scotch broom plant bursts open, it shoots out a seed with an initial velocity of 2.4 m/s at an angle of 60° above the horizontal.
q1. a uniform upward-pointing electric field e of magnitude 3.5times103 nc has been set up between two horizontal
Consider a series RLC circuit where R = 957 ? and C = 5.25 ?F. However, the inductance L of the inductor is unknown. What is the inductance of the inductor in millihenrys
In Denver, children bring their old jack-o-lanterns to the top of a tower and compete for accuracy in hitting a target on the ground, what is the launch speed needed to hit the bulls-eye
An inventor designs an ice boat that is propelled by pumping a jet of water directly out the rear in a direction parallel to the ice. What is the velocity of the ice boat when the water is gone
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