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Q. A cubic box of side a = 0.250 m is placed so that its edges are parallel to the coordinate axes. There is NO net electric charge inside the box, but the space in and around the box is filled with a nonuniform electric field of the following form: E(x,y,z) = Kz j + Ky k, where K = 3.70 N/(Cm) is a constant. What is the electric flux through the top face of the box?
Q. In soccer, a speed record was set for kicking a soccer ball at 43 m/s. If the soccer player kicked the ball from ground level at an angle of 30.0° from the horizontal, what would be the flight time of the soccer ball? Assume that air resistance is negligible.
A proton is initially at rest at a point where the potential is 459 V. Sometime later the proton is at a point where the potential is 218 V. If no force other than an electrostatic force acts on the proton, what is its final kinetic energy.
assume you would enter a vacuum chamber (on Earth), that is, a chamber with no air in it. Inside this chamber, if you dropped a hammer and a feather from the same height at the same time, both would hit the bottom at the same time.
A current of 10^-14 A is produced in a free-air chamber operating under saturation conditions. The sensitive volume, in which electronic equilibrium exists, contains 0.22g of air. What is the exposure rate .
While john is travelling along an interstate highway, he notices a 160 mile marker as he passes through town. Later John passes another mile marker, 119.
A father (m = 65 kg) and son (m = 38 kg) are standing facing each other on a frozen pond. The son pushes on the father and finds himself moving backward at 3.0 m/s after they have separated. How fast would the father be moving.
Find the resulting angular speed of the disk (in rad/s) and describe the direction of rotation.
A uniform steel beam has a mass of 1640 kg. On it is resting half of an identical beam. What is the vertical support force at each end.
A ball is thrown nearly vertically upward from a point near the edge of a tall building. it misses the edge of the building in ts way down and passes a point 160ft below its starting point 5 seconds after it leaves the thrower's hand.
Change values of the initial position, initial velocity, and the acceleration of the car so that its center follows the same path as the dot. What is the equation that describes motion of the dot.
The coefficients of friction for plastic on wood are μs = 0.50 and μk = 0.40. How much horizontal force would you want to apply to a 4.0-lb plastic calculator to start it moving from rest.
A coin with a diameter of 3.00 cm rolls up a 30.0 degree inclined plane. The coin starts with the initial angular speed of 60.0 rad/s and rolls in a straight line without slipping. How far does it roll up the inclined plane.
How rapidly atom are assembled in this protein synthesis
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