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Write the expression for the period of a mass attached to a spring using Newton's second law of motion and equation describing position of a mass attached to a spring as a function of time (X(t)=Acoswt).
A scaffold of mass 43 kg and length 7.0 m is supported in a horizontal position by a vertical cable at each end. What is the tension in the cable closer to the painter
A standing wave on a 75.0cm long string has three antinodes. The Wavelength is .50m. If the string has linear mass density 3.78×10?5kg/m and tension 10.5N , what are the wave's frequency
A molecule of DNA (deoxyribonucleic acid) is 2.35 µm long. The ends of the molecule become singly ionized: negative on one end, positive on the other. Determine the effective spring constant of the molecule
A 1.0E-4 F capacitor is charged to a potential of 50.0 V. It is connected to a 5.0 H inductance at time t = 0. What is the percent of the energy stored in the magnetic field at t = 0.2s
a helium-neon laser beam has a wavelength in air of 633 nm . it takes 1.38 ns for the light to travel through 30 cm of
Light is reflected from a transparent coffee table. When angle of incidence is 52.2°, the reflected light is completely polarized parallel to surface of the table top. What is the index of refraction of the material of the table?
A skater with an initial speed of 7.6 m/s is gliding across the ice. Air resistance is negligible. find how far will the skater travel before coming to rest
A parallel-plate capacitor is formed from two 3.60cm × 3.60cm electrodes spaced 2.70mm apart, What is the charge (in nC) on each electrode
A flint glass plate (n = 1.66) rests on the bottom of an aquarium tank. The plate is 6.50 cm thick (vertical dimension) and covered with water (n = 1.33) to a depth of 11.8 cm. Calculate the apparent thickness of the plate as viewed from above the wa..
A person sitting quietly in a room on a winter day may lose heat primarily by radiation from the outer surface of her clothes to the walls of the room. find the temperature of the outer surface of the clothes
Consider two masses that hang from an overhead beam. The first mass of 62.9 kg is attached to the beam using an ideal rope. Find the tension in the lower rope
The speed of object at displacement x = 20 m. The change in the momentum of the object at it is displaced from x = 12 to x = 20 m.
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