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Bonnie and Clyde are sliding 470 bank safe across the floor to their getaway car. The safe slides with a constant speed if Clyde pushes from behind with 395 of force while Bonnie pulls forward on a rope with 310 of force.
What is the safe's coefficient of kinetic friction on the bank floor?
Suppose a single electron orbits about a nucleus containing two protons (+2e), as would be the case for a helium atom from which one of the naturally occuring electrons is removed. The radius of the orbit is 4.41 × 10-11 m. Determine the magnitude..
a 1.5-kg object is attached to an ideal massless spring with a spring constant of 20 nN/M OSCILLATES on horizontal, Find the frequency of the oscillations
A charged particle travels undeflected through perpendicular electric and magnetic fields whose magnitudes are 1000N/C and 60mT , respectively. Find the speed of the particle if it is a proton.
Basketball player Darrell Griffith is on record as attaining a standing vertical jump of 1.2 m. What is his speed as he leaves the floor
A man strikes a long aluminum rod at one end. Another man, at the other end with his ear close to the rod, How long is the rod
A solenoid used to produce magnetic fields for research purposes is 1.9m long, with an inner radius of 27cm and 1100 turns of wire. When running, how large a current does it carry
A dentist uses a small mirror with a radius of 36 mm to locate a cavity in a patient's tooth. If the mirror is concave and is held 16 mm from the tooth, what is the magnification of an image.
The atomic planes in a crysral are spaced d = 0.50 nm apart. These planes are used in a diffraction experiment with X-rays with ? = 0.05 nm. What are the diffraction angles for the first three bright fringes
two small beads having positive charges 3q and q are fixed at the opposite ends of a horizontal, insulating rod, extending from the origin to the point x=d. a third small chatged bead is free to slide on the rod. at what position is the third bead..
makes an angle of 45 degrees with the horizontal by an external force. The object moves up the incline a distane 3m. What is an increase in the gravitational energy of the object
A certain type of laser emits light that has a frequency of 5.6 x 10^14 Hz. The light, however, occurs as a series of short pulses, each lasting for a time of 3.9 x 10-11 s.
A stone is thrown horizontally from the roof of a tall building with a speed of 23.3 m/s. If the cliff is 26.5 high and stone lands on level parking lot below, how far from the building will the stone land?
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