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A photon of green light has a wavelength of 520 nm. Find the photon's frequency, magnitude of momentum, and energy. Express the energy both in joules and electron volts.
A size-5 soccer ball of diameter 22.6cm and mass 426g rolls up a hill without slipping, reaching a maximum height of 5.00 m above the base of the hill. How much rotational kinetic energy did it then have
Suppose two alpha particles were held together so they were just touching. Estimate the electrostatic repulsive force each would exert on the other
A typical cell has a membrane potential of -70 mV, meaning that the potential inside the cell is 70 mV less than the potential outside due to a layer of negative charge on the inner surface of the cell wall and a layer of positive charge on the outer..
when a standing wave exists on a string the vibrations of incident and reflected waves cancel at the nodes. what does
two point charges -30 and 45 are separated by a distance of 15.0. what is the magnitude of the electric field at a
Fred and Barney are two electric charges that are initially held 1 meter apart and experience an electric repulsion of 10 pounds of force. What would be the force of repulsion between them be if the two were moved closer together so that they were..
A 0.047 H inductor is wired across the terminals of a generator that has a voltage of 2.1 V and supplies a current of 0.021 A. Find the frequency of the generator
The driver of an 1800 kg car travelling at 23 m/s slams on the brakes, locking the wheels on the dry pavement. The coefficient of kinetic friction between rubber and dry concrete is typically 0.700.
A concave mirror is designed so that the virtual image it produces is twice the size of the object when the object is located 19.0 cm from the mirror. What is the mirror's radius of curvature?
A 2.11 kg mass experiences a gravitational force of 29.7 N at a certain point in space. What is the magnitude of the gravitational field at that point
A construction worker uses a steel tape to measure the length of an aluminum support column. what is the measured length when the temperature rises to 29.4°C
you are designing a delivery ramp for crates containing exercise equipment. the crates of weight 1480 n will move with
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