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Inside a helium nucleus there are two protons, each of charge +e. The distance between the centers of the two protons is about 1.6 femtometer. Calculate the strengths of the electrostatic repulsive force and the gravitational attractive force between the two protons. (1 femtometer = 10^-15 m, e = 1.6x10^-19 C)
A solid, horizontal cylinder of mass 9.0 kg and radius 1.30 m rotates with an angular speed of 8.00 rad/s about a fixed vertical axis through its center. Determine the final angular speed of the system
At a large business, employees must report to work at 7:30 A.M. The arrival times of employees is approximately symmetric and mound-shaped with mean 7:22 A.M. and standard deviation 4 minutes.
A small object of mass 0.0150kg & a charge of 3.1 uC hangs fromthe ceiling by a thread. determine the tension in the thread
q1. a demented scientist creates a new temperature scale the z scale. he decides to call boiling point of nitrogen 0
What is the speed of crate hit ground
A single 212Po nucleus, initially at rest, emits an alpha particle as it decays into a 208Pb nucleus. What is the total amount of nuclear potential energy, in joules, that was released in this process
Two loudspeakers on a concert stage are vibrating in phase. A listener is 57m from the left speaker and 30m from the right one. The listener can respond to all frequencies from 20 to 20 000 Hz.
A hunter aims directly at the target (on the same level) 115 m away. If the bullet leaves the gun at a speed of 205 m/s, by how much will it miss target.
The component of the external magnetic field along the central axis of a 125-turn coil of radius 29.0 cm decreases from 2.90 T to 0.400 T in 2.40 s. what is the magnitude of the induced current in the coil
Consider a group of 20 molecules with the following speeds: three have speed 1 m/s, Determine the rms speed (in m/s) of the molecules in this group at this instant in time
Assume the mostly infrared radiation from a heat lamp acts like a continuous wave with wavelength 1.50 µm. Find the peak magnetic field strength
Four equal point charges of +3.0 uC are placed in air at the our corners of a square that is 40cm on a side. find the force on any one of the charges
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