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The magnitudes of the four displacement vectors shown in the drawing are A = 15.0 m at an angle of 20, B = 11.0 m at an angle of 90, C = 12.0 m at an angle of 35, and D = 17.0 m at an angle of 90. Determine the directional angle for the resultant that occurs when these vectors are added together.
The energy momentum relationship for the conduction band of a 3D semiconductor is: E= (h bar)^2/2m*[k(x)^2/2+k(y)^2+k(z)^2]
Four point charges have the same magnitude of 2.18 x10-12 C and are fixed to the corners of a square that is 3.95 cm on a side. Three of the charges are positive and one is negative. find the magnitude of the net electric field that exists at the ..
Explain how much work does the gravitational force do on the block as the block travels from point P to (a) point Q and (b) the top of the loop?
We used a 100g mass hung from the 10 cm mark on a meter stick. find the mass of the stick using method of torques
A light bulb has a resistance of 260 . It is connected to a standard wall socket (120 V rms, 60.0 Hz, Determine the rms current in the bulb
Two point charges have a total charge of 515 µC. When placed 1.15 m apart, the force each exerts on the other is 24.4 N and is repulsive. What is the charge on each.
A uniform thin rod of length L=2.5 m and mass 2 kg can rotate in a horizontal plane about a vertical axis through its center. what is the angular velocity of the rod immediately after the collision
Find out the time that the arrow spends in the air.
A 12.5-kg horizontal plank 4.00 m long rests on two supports, one at the left end and a second 1.00 m from the right end
A uniform rod of weight W is supported horizontally by two bricks at its ends. Calculate the Force on the other support immediately thereafter, it should be in terms of W
A thundercloud similar to the one described in Example 24.3 produces a lightning bolt that strikes a radio tower. find the effective resistance of the air during the lightning strike
Highg power lasers in factories are used to cut through cloth and metal. One such laser has a beam diameter of 1.50 mm, Find the power delivered by the laser
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