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Q. At each point on the surface of the cube the electric field is parallel to the z axis. The length of each edge of the cube is 3.9 m. On the top face of the cube the electric field is in the negative z direction and has a magnitude of 43 N/C magnitude. On the bottom face of the cube the field is in the positive z direction and has a magnitude of 19 N/C. Determine the net charge (in nC) contained within the cube.
Q. A lighthouse that rises 49 {rm ft} above the surface of the water sits on a rocky cliff that extends 19 {rm ft} from its base. A sailor on the deck of a ship sights the top of the lighthouse at an angle of 30.0 above the horizontal.
If the sailor's eye level is 14 {rm ft} above the water, how far is the ship from the rocks?
Two point charges and are held in place 4.50 apart. Another point charge -2.5 of mass 6 is initially located 3.00 from each of these charges and released from rest. You observe that the initial acceleration of -2.50 is 354 upward, parallel to the ..
What is the speed of each ball as it strikes the ground? How far apart are the balls 0.700 s after they are thrown.
A point P is on a rim of a wheel of radius 2.0m. At time t=0 wheel is at rest and P is on the x-axis. The wheel undergoes a uniform angular acceleration of 0.01 rad/s2 about the center O. Find out the time t, when P returns to an original position on..
What is ratio of the applied force
A marble is thrown horizontally with a speed of 19.0 m/s from the top of building. When it strikes the ground, marble has a velocity that makes an angle 75° with the horizontal. From what height above the ground was the marble thrown.
What is wavelength of the X-ray photon
Florence, who weighs 120 lbs, stands on a bathroom scale in an elevator. What would the scale read when the elevator is accelerating downward at 2m/s2.
Analyse the instantaneous velocity of the car
How to find out speed of the block
A 50 g ball is fired horizontally with initial speed v_0 toward a 110g ball that is hanging motionless from a 1.10 m-long string. The balls undergo a head-on, perfectly elastic collision, after which the 110g ball swings out to a maximum angle the..
ou place it in water and it displaces a volume of 20 cubic centimeters of water. What is the hardness of this mineral? describe your answer.
What would be the equilibrium temperature when a 256 g block of copper at 314 °C is placed in a 140 g aluminium calorimeter cup containing 827 g of water at 11.5 °C.
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