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(a) A block of wood in the shape of a cube, 5.0 cm on a side, is floating in water with its top face parallel to the surface of the water. With a ruler, you measure that the top of the block sticks out of the water by 1.5 cm. What is the density of that piece of wood?
(b) A block of aluminum weighs 2.00 N when hung from a spring scale in air. The block is then dipped into a beaker of oil so that the block is fully submerged, and the spring scale now reads 1.41 N. What is the density of the oil?
A light beam is incident on a piece of zircon (n = 1.923) at the Brewster's angle. determine the value of Brewster's angle
A solid cube of wood of side 2a and mass M is resting on a horizontal surface. The cube is constrained to rotate about an axis AB. A bullet of mass m and speed v is shot at the face opposite ABCD at a height of 4a/3. The bullet becomes embedded in th..
A compact car has a mass of 1170kg. What will be the car's oscillation frequency while carrying four 84.0kg passengers
A 2.16 kg solid sphere (radius = 0.120 m) is released from rest at the top of a ramp and allowed to roll without slipping. what is its total kinetic energy
A small but measurable current of 8.4 x 10-10 A exists in a copper wire whose diameter is 2.9 mm. calculate the current density and electron drift speed
Astronomers discover an exoplanet (a planet of a star other than the Sun) that has an orbital period of 3.31 Earth years in its circular orbit around its sun
A small plastic ball of mass 9.44 × 10-3 kg and charge +0.181C is suspended from an insulating thread and hangs between the plates of a capacitor, What is the magnitude of the charge on each plate
A small object of mass 0.0150kg & a charge of 3.1 uC hangs fromthe ceiling by a thread. A second small object, with a charge of4.2 uC, is placed 1.2m vertically below the first charge. Find a) the electric field at the position of the upper charge..
We are not normally aware of the gravitational or electric force between two ordinary objects. What is the reason in each case? Give an example where we are aware of each one and why.
Draw a free body diagram of a container of water that you are holding, you walk with the container at a constant speed and then stop abruptly. Draw arrows for the force of gravity, the normal force (your hand pushing up on the container) and the s..
A 75-kg window air conditioner falls a distance of 6 m to the street below (no one is injured). What was the PE of the air conditioner
In order to heighten your enjoyment of your 29-carat blue diamond, you view it through a lens held close to your right eye, estimate the focal length of the lens
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