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1. A U-shaped tube open to the air at both ends contains some mercury with a density of 13,600 kg/m3. A quantity of water is carefully poured into the right arm of the tube until the vertical height of the water column is 15 cm.
(a) Calculate the gauge pressure at the water-mercury interface?
(b) Calculate the vertical distance h from the top of the mercury level in the left arm to the top of the water in the right arm.
2. What is the minimum volume necessary for a chunk of ice to float in water with a 55 kg person standing on it? (Assume the person doesn't want to get wet. The density of water is 1000 kg/m3 and the density of ice is 917 kg/m3.) What mass of ice is this?
3. A shower head has 20 circular openings, each with radius 1.00 mm. The shower head is connected to a pipe of radius 0.800 cm. If the speed of water in the pipe is 3.00 m/s, what is its speed as it exits the shower head openings?
Agent Arlene devised the following method of measuring the muzzle velocity of a rifle. She fires a bullet into a 4.600-kg wooden block resting on a smooth surface, What is the speed v of the bullet
Two particles are created in a high-energy accelerator and move off in opposite directions. What is the speed of the second particle, as measured in the laboratory
A steady torque of 23-N•m is applied to a grindstone whose moment of inertia is 0.130 kg•m2. Using energy principles, and neglecting friction, determine the angular speed after the grindstone has made 13.0 revolutions.
Two point charges of -1microC and 2microC are separated by a distance of 0.30m. What is the electrostatic force on each particle
A laser beam is incident on two slits with a separation of 0.210 mm, and a screen is placed 4.80 m from the slits. find the wavelength of the laser light
52 cm3 of gasoline are mixed with 40 cm3 of water. What is the average density of the mixture
Four charged particles rest at the corners of a square of side a = 0.30 m. Charges 1 through 4 are 10, 20, 30 and 40 µC, Determine the electric field at the center of the square
A piece of Nichrome wire has a radius of 5.0 x10-4 m. It is used in a laboratory to make a heater that dissipates 2.00 x10^2 W of power when connected to a voltage source of 120 V. Ignoring the effect of temperature on resistance, estimate the req..
Four linear polarizers are stacked so that each is at a 30 degree angle to the one before it, what is the intensity of the transmited light
Find a circuit to change the relationship between waveform and zero-volt axis & calculating the period of waveform.
UVB photons have a wavelenghth of 300nm. what is the frequency of UBV photons, What is the energy of a UBV photon in JOULES
A rotating cylinder about 25 km long and 9 km in diameter is designed to be used as a space colony. with what angular speed must it rotate so that residents on it would experience the same acceleration due to gravity as on earth? In radians per se..
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