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A cylindrical container with a cross-sectional area of79.7 cm2 holds a fluid ofdensity 765 kg/m3. At thebottom of the container the pressure is 110 kPa.
(a) What is the depth of the fluid?
(b) Find the pressure at the bottom of the container after anadditional 1.50 x 10-3m3 of this fluid is added to the container. Assume thatno fluid spills out of the container.
A charge of -3.9 micro-coulombs is launched from the positive plate of a large capacitor to the negative plate.
Can the Sum of the torques on an object be zero while the net force on the object is nonzero? Explain. Can the Sum of the forces on an object be zero and the Sum of the torques non- zero
A 75.0 kg stunt man jumps from a balcony and falls 26.5 m before colliding with a pile of mattresses. what is the average force exerted by the mattresses on the stuntman
A 4.2cm tall object is placed 27cm in front of a spherical mirror. It is desired to produce a virtual image that is upright and 3.0cm tall. What is the radius of curvature of the mirror
A box of books is initially at rest a distance D = 0.515 m from the end of a wooden board. Find the speed of the box as it reaches the end of the board
A water pump lifts water from a well depth of 30 to ground level. How much work does the pump do by moving 3 m^3 of water
An Atwood's machine consists of blocks of masses m1 = 11.0 kg and m2 = 21.0 kg attached by a cord running over a pulley as in the figure below. The pulley is a solid cylinder with mass M = 8.60 kg and radius r = 0.200 m. The block of mass m2 is allow..
A hare and a tortoise compete in a race over a straight course 1.00 km long. The tortoise crawls at a speed of 0.200 m/s toward the finish line. For how long in time was the hare stationary
A spider hangs from a strand of silk whose radius is5.8x10-6 m. The density of the silk is 1100kg/m3. When the spider moves, waves travel along thestrand of silk at a speed of 310 m/s. Determine the mass of the spider.
Small rockets are used to make small adjustments in the speed of satellites. One such rocket has a thrust of 53 N. If it is fired to change the velocity of a(n) 66000 kg space craft by 99 cm/s, how long should it be fired? Answer in units of s.
A 1.40 kg iron horseshoe is taken from a forge at 950°C and dropped into 4.00 kg of water at 14.0°C. Assuming that no energy is lost by heat to the surroundings, determine the total entropy change of the horseshoe-plus-water system.
The flywheel of an old steam engine is a solid homogeneous metal disk of mass M = 129 kg and radius R = 85.3 cm. How long does it take for the flywheel to come to rest
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