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A block of mass 20kg is dropped into water. What force should be applied to pull it to the surface if its volume is 0.001m^3? Density of water is 1000.0kg/m^3.
A second oil is then poured into the right arm until the two levels are even. A small object (density 0.640 g/cm3 ) is dropped into the second column of oil and it is found to float with 20.0% of its volume above the surface.
During the same interval, a 34 kg greyhound can accelerate from rest to 23 m/s. Calculate (a) the change in kinetic energy and (b) the average power output for each.
A bullet is fired into a block of wood sitting on a block if ice. The bullet has an initail velocity of 500m/s and a mass of 0.005 kg. What is the magnitude of the impulse that acts on the block of wood
The driver of a car slams on the brakes when he sees a tree blocking the road. With what speed does the car then strike the tree
A solid cylindrical disk has a radius of 0.45 m. It is mounted to an axle that is perpendicular to the circular end of the disk at its center. What is the mass of the disk
You exert a force of 21 N on the head of a thumbtack. The head of the thumbtack has a radius of 5 mm. What is the pressure on your thumb
What electric potential energy will a fourth charge q4 = 4mC and located at the origin with respect to the other three charges experience and what is the pendulums period for small angle oscillations?
A coil that is circular has a radius of 8 cm and has 400 turns it is on a table horizontally, What is the total EMF in the coil as a function of time and in which direction does the current flow
An object has a total energy of 5.60 × 1015 J and a kinetic energy of 1.40 × 1015 J. find the magnitude of the object's relativistic momentum
A 6.70 -uC particle moves through a region of space where an electric field of magnitude 1300 N/C points in the positive x direction, find the components of the particle's velocity
A canoe has a velocity of 0.37m/s southeast relative to the earth. The canoe is on a river that is flowing 0.47m/s, Find the magnitude of the velocity of the canoe relative to the river
A sinusoidal wave traveling in the positive x-direction has a wavelength of 62.0 cm, a frequency of 58.0 Hz, and an amplitude of 74.0 cm. The part of the wave that is at the origin at t = 0 has a vertical displacement of 22.94 cm.
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