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Imagine holding an air-filled 2 L soda bottle (V = 2000 cm3) underwater. You have used a scale to determine that the mass of the soda bottle is mbottle = 50 g. When you push it down to submerge it completely in a pool, what force is required to hold it underwater? Drawing a free body diagram of the situation will help you solve this problem.
A hill that has a 25.7% grade is one that rises 25.7 m, At what angle is such a hill inclined above the horizontal
Two very small spheres are initially neutral and separated by a distance of 0.60 m. What is the magnitude of the electrostatic force that acts on each sphere
A small circular object with mass m and radius r has a moment of inertia given by I = cmr2. To what maximum height will it rise after leaving the ramp
A distant galaxy emits light that has a wavelength of 699.1 nm. On earth, the wavelength of this light is measured to be 701.6 nm, Decide whether this galaxy is approaching or receding from the earth
The electric potential in a certain area is given as: V = 3x^2 + 5yz. what is the electric field in the area
An air-track glider attached to a spring oscillates between the 10 cm mark and the 60 cm mark on the track. The glider completes 10 oscillations in 48 s. What is the maximum speed of the glider
A swimmer swims in still water at a speed of 5.90 m/s. He intends to swim directly across a river that has a downstream current of 3.17 m/s. What is the velocity relative to the bank
A 4.0 kg ball is located at x= 4.0m, y= 0m. A 6.0 kg ball is located at x= 2.0m, y= 4.0m, and a 3.0 kg ball s located at x= -1.0m, y= -2.0m. obtain the location of the center of the mass of this system
What is the minimal mass of helium (density 0.18 kg/m^3) needed to lift a balloon carrying two people in a basket, if the total mass of people, basket
A 130- baseball, moving along the axis with speed 35 , strikes a fence at a 45 angle and rebounds along axis with unchanged speed Give the - and - components of its change in momentum.
A police radar gun emits an electromagnetic wave at a frequency of fs = 1.08×1013 Hz. What is the speed of the oncoming car (v)
A spherical satellite with a radius of 75m is spinning over its own axis with an angular speed of 232rad/s. What is the angular momentum after the failure
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