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Two capacitors are identical, except that one is empty and the other is filled with a dielectric (k = 3.7). The empty capacitor is connected to a 11 -V battery. What must be the potential difference across the plates of the capacitor filled with a dielectric so that it stores the same amount of electrical energy as the empty capacitor?
Robert has just bought a new model rocket, and is trying to measure its flight characteristics. how much work is done by the drag force on the rocket during its ascent
Two bricks are adjacent, and a third brick is positioned symetrically above them. Where is the center of mass of the three bricks
A satellite is in a circular orbit about the earth (ME = 5.98 × 1024 kg). The period of the satellite is 1.20 × 104 s. Illustrate what is the speed at which the satellite travels?
A solid sphere is released from height h from the top of an incline making an angle ? with the horizontal. Calculate the speed of the sphere when it reaches the bottom of the incline in the case that it rolls without slipping
A heat that goes into a particular carnot engine is 4.72 times greater than the work it performs. What is the engines efficiency
A small bird’s wings can undergo a maximum displacement amplitude of 5.0 cm (distance from the tip of the wing to thehorizontal). If the maximum acceleration of the wings is 12 m/s^2,and we assume that the wings are undergoing simple harmonic moti..
A small girl and boy take a sled up to the top of a snow covered slope which is inclined 30 degrees above the horizontal. How fast are they going at the bottom
During a snowmobile race our hero goes 16.7 km at 45 deg to the North of West (45 degrees above the -X). Then turns and goes 7.5 km due east. Then turns and goes 23 km at 40 degrees to the West of South (40 degrees to the left of -y).
A parallel-plate capacitor has an area of 5.15 cm2, and the plates are separated by 1.05 mm with air between them. It stores a charge of 337pC. What is the potential difference across plates of the capacitor.
how does the force curve compare to the distance curve? what differences are there? what would you say is the
77 N to push a box with an acceleration of 0.55 m/s2. When she increases the pushing force to 85 N, the box's acceleration changes to 0.72 m/s2. What is the mass of the box
A parallel beam of unpolarized light in air is incident at an angle of 57.5 degrees (with respect to the normal) on a plane glass surface, What is the angle of refraction of the transmitted beam
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