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A pendulum consists of a mass m = 0.080 kg hanging from a flexible string of length L. The string is very thin, very light, and doesn't stretch much. It makes small oscillations, with a period of 0.663 s. Find the oscillation frequency of the pendulum. Neglect any air resistance. 1.51 Hz
Find the period of the same pendulum on the moon's surface. The gravitational acceleration of the moon is 1.67 m/s2.
A charge of q = +7.22 ?C is located in an electric field. The x and y components of the electric field at this point are Ex = 6.48E+3 N/C, What is the magnitude of the force on the charge
If the contact time with the sidewalk is 1800s, what is the magnitude of an average force exerted on the superball by the sidewalk.
A ground state hydrogen atom absorbs a photon of light having a wavelength of 93.06 nm. What is the final state of the hydrogen atom
A spacecraft has a nonrelativistic (or classical) momentum whose magnitude is 1.5 × 1013 kg·m/s. Find the relativistic momentum of the spacecraft
A certain quantity of steam has a temperature of 100.0 oC. To convert this steam into ice at 0.0 oC, what would be the linear speed of the ice
A U-shaped tube open to the air at both ends contains some mercury with a density of 13,600 kg/m3. Calculate the gauge pressure at the water-mercury interface
An automobile has a mass of 1690 kg and a velocity of 23.8 m/s. It makes a rear-end collision with a stationary car whose mass is 2100 kg. determine how far the cars skid before coming to rest
Find the de Broglie wavelength of an oxygen molecule of average kinetic energy in air at a temperature of 226.0 K
For a hydrogen atom, an electron is in the second excited state, What wavelength of light will ionize the electon
What is the speed of the river current. What is the swimmer's speed relative to the shore.
A fluid has a density of 1040kg/m^3. If it rises to a height of 1.8cm in a 1.0mm diameter capillary tube, what is the surface tension of the liquid
You fire a gun horizontally that is 25m off the ground and the bullet goes at 200m/s. What is the time it takes for the bullet to hit ground, how far down range does bullet travel, and what is the resultant velocity (in m/s) and final angle.
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