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Problem: The sun is 24 degrees above the horizon. It makes a 60m long shadow of a tall tree.
Part A: What is the height of the tree?
I need help to calculate the height of the tree.
air passes steadily through a device from 20 psia and 80degf to 40 psia. during the process a work input of 24.2 btulb
Suppose we have a cube of resistors (12 resistors total) all the same resistance R connects as in the figure to left. Find the equivalent resistance between the two diagonally opposite corners
A wheel starts from rest and rotates with a fix angular acceleration about a fixed axis. Find how long after it started will the wheel complete the second revolution
A ray of light is traveling in glass and strikes a glass/liquidinterface. The angle of incidence is 51.0°, and the index ofrefraction of glass is n = 1.50. What must be the index of refraction of theliquid such that the direction of the light enter..
A muon and an antimuon are moving in opposite directions with velocities of -0.4 c and 0.4 c, respectively. When they collide, they can annihilate each other and turn into two photons. Both muon and antimuon have a mass of 105.66 MeV/c2.
A block is on an incline with a height h of.60 m. Use the principle of conservation of mechanical energy to compute the speed of the block at the base of the incline
The drawing shows a rectangular block of glass (n = 1.52) surrounded with liquid carbon disulfide (n = 1.63). A ray of light is incident on the glass at point A with a θ =29.0° angle of incidence. At what angle of refraction does the ray leave the gl..
A hole in an aluminum plate has a diameter of 1.179 centimeter at 24oC. Find what is the diameter of the hole at 199oC
A 0.140 kg baseball is thrown horizontally with a velocity of 28.9 m/s. It is struck with a constant horizontal force that lasts for 1.85 ms, What was the magnitude of the horizontal force
a binary channel with capacity 36 k bitssec is available for pcm voic transmission. if signal is band limited to 3.2
An insulating sphere with a radius of 3.2×102 m has a uniform charge density of 5.78 C/m3 throughout its volume. Find the magnitude of the electric field at the surface of the sphere
Gravity accelerates the electron in the negative y direction at 9.80 m/s2 while an electric field accelerates it in the positive x direction at 3.80 x 10e6 m/s2. Calculate its velocity 2.45 second after it starts to move
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