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A 2900 pF air-gap capacitor is connected to a 7.4 V battery. If a dielectric with a dielectric constant of 5.5 is now placed between the plates, how much additional charge will flow from the battery onto the capacitor?
In one dimension, it is obvious that the force obeying Hook's law is conservative. Consider instead a spring that obeys Hook's law and has one end fixed at origin.
A man with mass 72.9 kg and density 970 kg/m^3 stands in a shallow pool with 33.3% of the volume of his body below water. Calculate the normal force the bottom of the pool
A crane of mass mc = 3400 kg supports a load of ml = 11300 kg as in Figure. The crane is pivoted with a frictionless pin at A and rests against a smooth support at B. Find the reaction forces at A and B.
a body has a mass of 2000 kg. determine the weight of the body expressed in n if it is a located on the surface of the
A man of mass 62.3 kg stands on a scaffold supported by avertical rope at each end. The scaffold has a mass of 24.6 kgand is 3.7 m long. Suppose the man stands to the right fromthe middle of the scaffold that is a distance one sixth of the length ..
If a scuba diver descends also quickly into the sea, the internal pressure on all eardrum remains at atmospheric pressure while the external pressure increases due to the increased water depth. At sufficient depths, the dissimilarity between the exte..
A parallel-plate air capacitor is made from two plates 0.070 square, spaced 9.3 apart. What must the potential difference between plates be to produce an energy density of.
two gear wheels with radius of 25 cm an 60 cm have interlocking teach. How many radians does the smaller wheel turn
A rock of mass M with a density twice that of water is sitting on the bottom of an aquarium tank filled with water. Find the upward force acting on the rock by the bottom of the tank
If astronauts could travel at 0.970c, we on earth would say it takes (4.20/0.970) = 4.33 years to reach Alpha Centauri, 4.20 light-years away. How much time passes on the astronauts clock? What is the distance to Alpha Centauri as gauged by the astro..
A baseball (m = 137 g) approaches a bat horizontally at the speed of 40.6m/s (91 mi/h) and is hit straight back at a speed of 45.1m/s (101 mi/h). If the ball is in contact with the bat for a time of 1.00 ms, what is the average force exerted on the..
Weight of a box is 150 pounds. The horizontal force required to move the box is 70 lb. What horizontal force is required if 60lbs is added to box.
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