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An electronic flash attachment for a camera produces a flash by using the energy stored in a 770 µF capacitor. Between flashes, the capacitor recharges through a resistor whose resistance is chosen so the capacitor recharges with a time constant of 3.0 s. Determine the value of the resistance.
What is Neptune's semimajor axis of the transfer orbit if the semimajor axis is 4497.1*10^6 and the mass of Neptune over the Earth is 17 and the eccentricity of 0.01?
A wrecking ball (weight = 5010 N) is supported by a boom, which may be assumed to be uniform and has a weight of 3670 N. As the drawing shows, a support cable runs from the top of the boom to the tractor.
An oil tanker has collided with a smaller vessel, resulting in an oil spill in a large, calm-water bay of the ocean. what is the largest total area of the oil slick
How much heat is required to raise the temperature of 0.265kg of water from 20.4 degrees C to 31.8 degrees C
A certain camera has f-numbers that range from 1.1 to 28. If the focal length of the lens is 40 mm, what is the range of aperture diameters for the camera
A cannonball is shot (from ground level) with an initial horizontal velocity of 40 m/s and an initial vertical velocity of 21 m/s, What is the initial angle of the cannonball with respect to the ground
A nickel crystal is used as a diffraction grating for x-rays. Then the same crystal is used to diffract electrons. what is the kinetic energy of each electron
A copper bar 2.5 m long has a circular cross section of radius 2 cm. One end is kept at 80 oC and the other end is kept at 0 oC. what is the thermal current in the copper bar
A 4kg cart is initially moving at 3m/s on a frictionless track. It then hits an incline and stops 2m later. what is the net work done on the cart
A 21.0 kg child on a 1.00 m long swing is released from rest when theropes of the swing make an angle of 33.0° with the vertical. Neglecting friction, find the child's speed at the lowest position.
The flywheel in a car is a solid cylinder with a mass of 100 kg, a radius of 11 cm, and a length of 5.0 cm. What is the kinetic energy of the cylinder
A 9.0 V battery is connected across two large parallel plates that are separated by 4.5 mm of air, creating a potential difference of 9.0 V between the plates. What is the electric field in the region between the plates
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