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A block of wood of mass 10.8 kilogram and density 4.42 x 102 kg/m3, floats on water.
(a) Find the minimum amount of aluminum (density 2.70 x 103 kg/m3) that can be located on top of the wood block and cause the block of wood and the aluminum to sink?
(b) If instead it was a block of ice of mass 10.8 kilogram and density 8.90 x 102 kg/m3. Find the minimum amount of aluminum that can be located on top of the ice block and cause the block of ice and the aluminum to sink?
a 0.0017 t magnetic field and a 5.7 103 nc electric field both point in the same direction. a positive 2.0-mc charge
Consider the collision between two hockey pucks in the figure below. They do not stick together. Their speeds before the collision are v1i = 30 m/s and v2i = 11 m/s. What is the final velocity of the other puck
Neutron stars are extremely dense objects that are formed from the remnants of supernova explosions. Find the greatest possible angular speed the neutron star can have
consider a simple harmonic oscillator. calculate the time averages of the kinetic and potential energies over one cycle
The two plates of a capacitor hold +2350 µC and -2350 µC of charge, correspondingly, when the potential dissimilarity is 910 V. What is the capacitance? Answer in µF
A force of 250 N is applied to a hydraulic jack pistonwith a 0.1m diameter. If the output piston, which supportsthe load, has a diameter of 0.5m, How much weight can be lifted
The tub of a washer goes into its spin cycle, starting from rest and gaining angular speed steadily for 7.00 s, Through how many revolutions does the tub turn while it is in motion
The skis have a thrust of 189 N and a coefficient of kinetic friction on snow of 0.1. Unfortunatately, the skis run out of fuel after only 9 s. Illustrate what is Sam's top speed?
Find the range of visible wavelengths of light in Plexiglas. (Assume that the range of visible wavelengths of light in air is 380 - 760 nm.)
Two double stars of the identical mass as the sun rotate about their common center of mass. Their separation is 4 light years. Evaluate what is their period of revolution
A small ball with a mass of 49.0g and a charge of ?0.170?C is suspended from the ceiling by a string. What is the tension in the string when the second ball is directly beneath the first ball
A person wears a hearing aid that uniformly increases the sound level of all audible frequencies of sound by 35.7 dB. What is the intensity delivered to the eardrum
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