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You come across an open container which is filled with two liquids. Since the two liquids have different density there is a distinct separation between them. Water fills the lower portion of the container to a depth of 0.212 m which has a density of 1.00 × 103 kg/m3. The fluid which is floating on top of the water is 0.335 m deep. If the absolute pressure on the bottom of the container is 1.049 × 105 Pa, what is the density of the unknown fluid? The acceleration due to gravity is g = 9.81 m/s2 and atmospheric pressure is P0 = 1.013 × 105 Pa.
A rocket of total mass M and with burnout mass 0.20 M attains a speed of 3 200 m/s after starting from rest in deep space. Evaluate the exhaust velocity of the rocket?
An imaginary accelerator consists of colliding beams of electrons and protons, each of 2TeV total energy. What laboratory energy would be required to achieve the same center - of - mass energy if electrons collide with stationary protons?
What is the magnitude of the contact force on the student by the backpack.
A 49.0 g ball of copper has a net charge of 1.7 µC. What fraction of the copper's electrons have been removed
What angle did the hawk make with the horizontal throughout its descent? For how long did the mouse enjoy the free fall.
An 850g- iron block is heated to 370C and placed in an insulated container (of negligible heat capacity) containing 41.0g of water at 23.0C a).What is the equilibrium temperature of this system? The average specific heat of iron over this temperat..
A 13.00 g bullet travelling 236 m/s penetrates a 2 kg block of wood and emerges cleanly at 179 m/s. If the block is stationary on a frictionless surface as hit, how fast does it move after the bullet emerges.
A small immersion heater is rated at 350 W. Estimate how long it would take a heat a cup of soup (assume this is 250 mL of water) from 20C to 60C.
The doctors planning a radiation therapy treatment have determined that a 50g tumor needs to receive 0.21J, What is the dose in gray
A 10.5 kg uniform board is wedged into a corner and held by a string at a 50 degree angle. Determine the tension in the string. Hint: take torques about the corner and assume any length for the board.
A 0.900-V potential difference is maintained across a 1.50-m length of tungsten wire that has a cross-sectional area of 0.600 mm2. What is the current in the wire.
A student at another university repeats the experiment you did in lab. What is the kinetic energy (in joules) of the target ball just after it is struck
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