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In the lab you place a beaker that is half full of water (density ρw) on a scale. You now use a light string to suspend a piece of metal of volume V in the water. The metal is completely submerged, and none of the water spills out of the beaker. Question: Give a symbolic expression for the change in reading of the scale. (Express your answer in terms of the variables ρw, V, and appropriate constants.)
A simple pendulum makes 140 complete oscillations in 2.50 min at a location where g = 9.80 m/s2. Find the period of the pendulum
A spring oscillator is designed with a mass of 0.277 kg. It operates while immersed in a damping fluid, Find the required damping constant for the system
Calculate the electric force Fe between a stationary proton and uranium nucleus...separated by a distance of 3.6 nm, determine the intial acceleration of the proton
A stunt man drives a car at a speed of 20 m/s off a 27-m-high cliff. The road leading to the cliff is inclined upward at an angle of 20?. How far from the base of the cliff does the car land
An X-ray photon scatters from a free electron at rest at an angle of 175%u2218 relative to the incident direction, Determine the energy of the incident photon
A submerged scuba diver looks up toward the calm surface of a freshwater lake and notes that the Sun appears to be 35o from the vertical. At what angle above the horizon does the friend see the sun
A bat hits a moving baseball. If the bat delivers a net eastward impulse of 0.8 N-s and the ball starts with an initial horizontal velocity of 5.0 m/s to the west, what is the mass of the ball
A box with a mass of 5 kg is lifted (without acceleration) through a height of 2 m to place it upon the shelf of a closet. What is the increase in potential energy of the box
If the index of refractions of the red light is 1.4925, what is the index of refraction of the blue light?
Two horizontal forces, 249 N and 165 N, are exerted in opposite directions on a crate. What is the net horizontal force on the create? Be sure to point to the direction of the net force.
An electron enters the region between two plates traveling along the x-direction with a speed of v = 2.53x10^6 m/s. Both plates are parallel to the x-y plane and are separated by 3.2 cm. The potential of the top plate at z = 3.2 cm is +150 V while th..
A roller coaster at an amusement park has a dip that bottoms out in a vertical circle of radius r, how fast is the roller coaster traveling at the bottom of the dip
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