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At a horizontal distance of 45m from a tree, the angle of elevation to the top of the tree is 26 degrees. How tall is the tree? please show work.
If the car starts at height h= 3.00 R and the radius is R_1 = 24.0 m, compute the radial acceleration of the passengers while the car is at point C, which is at the end of a horizontal diameter.
The output voltage of an AC generator is given by ?v = (200 V) sin (70?t). The generator is connected across a 19.0-? resistor. Find the power delivered to the resistor
Three point charges have equal magnitudes, two being positive and one negative. These charges are fixed to the corners of an equilateral triangle. The magnitude of each of the charges is 4.0 µC, and the lengths of the sides of the triangle are 4.4..
A 45.0 kg person, standing 1.3 m from the axis, begins to run on the disk in a circular path and has a tangential speed of 2.80 m/s relative to the ground. Find out the resulting angular speed of the disk (in rad/s)
How high will a 0.32kg rock go if thrown straight up by someone who does 119J of work on it? Avoid air resistance.
Imagine that the temperature of a 225 g block of aluminum sitting in the sun increases from 275 K to 300 K
X rays with a wavelength of 0.14nm undergo first-order diffraction from a crystal at a 73 degree angle of incidence. What is the angle of second-order diffraction
A bomb at rest at the origin of an xy-coordinate system explodes into three pieces. Just after the explosion, one piece, of mass m, what is the magnitude of the velocity of the third piece
A steel ball of mass .5 kg is fired vertically up from the edge of a building 20 m high with an initial speed of 10 m/s. find the average resistance force that sand exerts on the ball
In order to fabricate a uniform wire of resistance 2.7 ?, out of m=1 g copper which has a density of 8.92×103 kg/m3, What should be the length of the wire
Two small nonconducting spheres have a total charge of 93.1 ?C. When placed 1.01 m apart, the force each exerts on the other is 11.5 N and is attractive. What is the charge on each?
A massless rod of length 1.00 m has a 2.00-kg mass attached to one end and a 3.00-kg mass attached to the other. What is the angular speed of this system
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