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A cubical block of wood, 10.0 cm on a side, floats at the interfacebetween oil and water with its lower surface 1.50 cm below theinterface (see the cross section view in the figure). The densityof the oil is 790 kg/m3. (a) What is the gauge pressure at theupper face of the block? (b) What is the gauge pressure of thelower face of the block? (c) What is the mass and density of theblock? (m = 0.821 kg, ρ = 821 kg/m3)
question1you hold a brick at rest in your hand. a how numerous forces act on the brick? b recognize these forces. c are
A 1.0 kg block of aluminum isheated at atmospheric pressure so that its temperature increasesfrom 22°C to 38°C. Find the change in internal energy of the aluminum
A 3.00 kg bucket of water is raised from a well by a rope. If the upward acceleration of the bucket is 2.20 m/s2, find out the force exerted by the rope on bucket of water.
If a helium nucleus with a mass of 6.68 10-27 kg, a charge of +2e, how close will the helium atom come to the gold nucleus before it stops and turns around
Two conducting spheres of radii r1 and r2 at the same electric potential V are connected to each other by a wire. What is the ratio of their chargesq1 and q2?
A tennis ball gun launches tennis balls at 17.6 m/s . It's pointed straight up and launches one ball; 2.0 s later, What is the second balls' velocity at that point
A light bulb is connected to a 120.0-V wall socket. The current in the bulb depends on the time t according to the relation I = (0.703 A) sin [(257 rad/s)t]. What is the average power delivered to the light bulb
The Mariana trench is located in the Pacific Ocean at a depth of about 11 000 m below the surface of the water. If an underwater vehicle were to explore such a depth, what force would the water exert on the vehicle's observation window
A neon sign requires a 13 kV rms voltage. This is to be obtained from a 220 V rms power supply using a single transformer. Find the required turns ratio for the transformer
In the hydraulic system shown in the figure , the piston on the left has a diameter of 4.5 and a mass of 1.8, what is the height difference between the two pistons
A ball is thrown vertically upward from the Earth's surface. what are the velocity and the acceleration of the ball
A 1055-kg van, stopped at a traffic light, is hit directly in the rear by a 655-kg car traveling with a velocity of +2.00 m/s. What is the final velocity of each vehicle
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