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a girl is using a rope to pull a box that weighs 300 N across a level surface with constant velocity. The rope makes an angle of 30 degress above the horizontal, and the tension in the rope is 100 N. what is the normal force of the floor on the box?
A parallel-plate capacitor is formed of two 10 cm x10 cm plates spaced 1.0 cm apart, What is the slowest speed the electron can have if it is to reach the negative plate
Monochromatic light is incident from the top onto two glass plates, as the drawing shows. What happens to the bright fringes
A cylindrical capacitor has an inner conductor with a radius of 1.6mm and an outer conductor with a radius of 3.8mm, A cylindrical capacitor has an inner conductor with a radius of 1.6mm and an outer conductor with a radius of 3.8m
A Michelson interferometer uses light from glowing hydrogen at 486.1 nm. As you move one mirror, 530 bright fringes pass a fixed point in the viewer. How far did the mirror move.
A car accelerates from rest to a kinetic energy of 1.65 x 10^5 Joules in a distance of 646 m. How much force did the car's engine deliver to produce the change in kinetic energy.
A 0.32 kg body undergoes simple harmonic motion of amplitude 9.1 cm and period 0.40 s. What is the magnitude of the maximum force acting on it
A girl delivering newspapers covers her route by traveling 9.99 blocks west, 4.00 blocks north, and then 1.00 blocks east
A ‘U' shaped pipe contains a liquid that is sealed at both ends by pistons. Determine the downward force
A boy of mass 50 kg runs up a hill of vertical height 300 m in 20 minutes. calculate the work he does climbing the hill
X rays with a wavelength of 0.24nm undergo first-order diffraction from a crystal at a 53%u2218 angle of incidence. At what angle does first-order diffraction occur
Assume a load resistor RLoad is placed in parallel with a 12 volt battery, calculate the internal resistance of the battery
The work needed to remove an electron from the surface of sodium is 2.3eV. Find the maximum wavelength of light
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