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Consider a uranium nucleus to be a sphere of radius R = 7.4 x 10^-15m with a charge of 92e distributed uniformly throughout its volume. (a) What is the electric force exerted on an electron when it is 3.0 x 10^-15 m from the center of the nucleus? (b) What is the acceleration of the electron at this point?
a motorcycle is following a car that is traveling at constant speed on a straight highway. initially the car and the
1. why does the stroboscope appear to make the vibration stop at certain frequencies? why does it appear to be two
The coherent green light of wavelength 650 nm illuminates two narrow slits in a screen. The slits are separated by 0.08 mm. A thin transparent plastic film (index of refraction 1.3) covers one slit. The light from the slits reaches a screen 1.0 m awa..
Find the buoyant force acting on the He balloon. The volume of the balloon might be calculated from the following. The balloon has a shape of a sphere with the diameter of 10 m. How many more mass may the balloon lift
Two loudspeakers emit sound waves along the x-axis. The sound has maximum intensity when the speakers are 25 cm apart. The sound intensity decreases as the distance between the speakers is increased, reaching zero at a separation of 35 cm.
a person having a spherical shape with mass m has a center of mass a distance h above a thin infinite sheet of mass
A proton is moving along the axis of a uniformly charged thin ring, of 20 nC/cm. The radius of the ring is 5 cm. If the proton started initially at 10 cm from the center of the ring with an initial velocity towards the ring, what initial speed does i..
In the continuous-caster process, steel sheets 25.3 thick, 2.04 wide, and 11.0 long are produced at a temperature of 870. What are the dimensions of a steel sheet once it has cooled to 21.0?
The G string on a violin has a fundamental frequency of 196 Hz. It is 33.0 cm long and has a mass of 0.500 g. what is the effective length of her string
A football is kicked straight up into the air; it hits the ground 4.4s later. With what speed did it leave the kicker's foot
A 8.50cm diameter wire coil is initially oriented so that its plane is perpendicular to a magnetic field of 0.690T pointing up. During the course of 0.180s, the field is changed to one of 0.350T pointing down. What is the average induced emf in the c..
A game of tug of rope is being played. The rope is being pulled with a force of 18 N East and 20 N West. What is the net force on the rope
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