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A rock weighing 7538 N rock with a volumeof 47 L is completely submerged inmercury. The density of mercury is 13.6 kg/L.
a.) Determine the density of the rock.
kg/L
b.) Determine the buoyant force on the rock.
N
Estimate the radiation pressure due to a 100 W bulb at a distance of 8.0 cm from the center of the bulb
In a pool game, the cue ball, which has an initial speed of5.0m/s, make an elastic collision with the eight ball, which is initially at rest. Find the direction of motion of the cue ball after the collision
In a lab experiment, you attach a 3.0 kg weight to a spring scale. You lift the scale and weight with a constant reading of 22.5 N. find the value and direction of the acceleration on the weight
When responding to sound, the human eardrum vibates about its equilibrium position. Supposed an eardrum is vibrating with an amplitude of the 6.3*10^7 m and a maximum speed of 2.0*10^-3 m/s.
A 115 V electric iron draws 5.57 A of current. How much heat is developed per hour, What is the temperature of the bath
A convex lens with f1= 20.3cm is mounted 39.5cm to the left of a concave lens. When an object is placed 29.4cm to the left of the convex lens, What is the focal length f2 of the concave lens
a wire is 1.2 m long and has a mass of 0.027 kg. the wire is stretched between two points and when driven by an
a cylinder of mass 10.0kg rolls without slipping on a horizontal surface.a at the instant its center of mass has a
A sailboat is travelling east at 4.0 m/s. A sudden gust of wind gives the boat an acceleration a = (1.35 m/s2 30° north of east). What is the boat's speed 6.0 seconds later while the gust subsides.
Suppose there are two transformers between your house and the high-voltage transmission line that distributes the power. In addition, assume that your house is the only one using electric power. At a substation the primary coil of a step-down tran..
A fisherman notices that his boat is moving up and down periodically without any horizontal motion, owing to waves on the surface of the water. What is the amplitude A of each wave
find the coefficient of kinetic friction between the slide and the child.
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