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In gaseous sodium chloride, chloride ions have one more electron than they have protons, and sodium ions have one more proton than they have electrons. These ions are separated by 0.240 nm. Suppose a free electron is located 0.551 nm above the midpoint of the sodium chloride molecule. What is the magnitude of the electrostatic force the molecule exerts on it?
A ball is tossed from an upper-story window of a building. The ball is given an initial velocity of 7.50 m/s at an angle of 25.0° below the horizontal. It strikes the ground 5.00 s later. (a) How far horizontally from the base of the building does..
Assume that the cell is floating on the surface of water, and that the water surface has a coefficient of friction of u=0.300. You now want to use a laser to move cell horizontally, along the surface of the water.
The leader of a bicycle race is traveling with a constant velocity of +11.2 m/s and is 10.4 m ahead of the second-place cyclist. How much time elapses before he catches the leader
An x-ray photon is scattered from a free electron (mass m) at rest. The wavelength of the scattered photon is ?', and the final speed of the struck electron is v. Through what angle w is the photon scattered
Electrons in a photoelectric-effect experiment emerge from a copper surface with a maximum kinetic energy of 1.10 eV . What is the wavelength of the light?
A vertical solid steel post of diameter d = 23.1 cm and length L=2.36 m is required to support a load of mass m = 8260 kg. What is the change in the post's length when the load is applied
During a process, 21.6 MJ of heat is added to a closed system. If the internal energy is increased by 59.6 MJ: How much work in Btu was done, Was this work done on or by the system
When seven people whose average mass is 83 kg sit down in a car, they ?nd that the car drops 0.99 cm lower on its springs. What is the frequency of the car's vibration
Two charged bodies exert a force of 0.790N on each other. If they are moved so that they are one-fourth as far apart, what force is exerted.
wave crest pass the bow of anchored boat every 3 seconds. The distance between two crest is 6.6 m. what type of wave is it (longitudinal or transverse) and how fast is it traveling
Calculate the energy of the electron in the ground state of double ionized lithium, which has an atomic number Z = 3
A roach that runs for its life because you try to hit it with your physics book runs off the horizontal tabletop with a speed of 0.685 m/s, What will be the vertical component of the roach's velocity just before it hits the floor
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