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Two large blocks are momentarily placed in contact. Block A has temperature 567 K and transfers 849 J of heat energy to block B, which has temperature 288 K. The temperatures of the blocks are unchanged. What is the change in entropy of the system consisting of the two blocks?
A physics book slides of a horizontal tabletop wit a speed of1.10m/s. it strikes the floor in 3.50s ignore air resistance. calculate the heigth of the table top above the floor
a truck horn emits a sound with a frequency of 245 hz. the truck is moving on a straight road with a constant speed.
A He-Ne laser beam with an intensity of 1.00 103 W/m2 is incident from air to dense flint, Find the intensity of the beam transmitted into the dense flint
A 1.2 kg brick is held a distance of 2 m above a manhole and then dropped. What is the change in potential energy
A car starts a race on a circular track and completes the first three laps in a counter clockwise direction in 618 seconds, finishing by an angular velocity of 0.0103 rad/sec. What is the cars average angular velocity for the first three laps?
A movig particle encounters an external electric field that decreases its kinetic energy from 9960 eV to 7700 eV as the particle moves from position A to position B. Determine the charge of the particle
a a capacitor consists of two closely spaced metal conductors of large area separated by a thin insulating foil. it has
the star vega has a measured angular diameter of 3.24 mas milliarcseconds and a flux of 2.84 x 10-8 wm2. its distance
A transformer is constructed that has 120 turns of wire on the primary side and 430 turns of wire on the secondary (load) side. what is the AC current measured on the secondary side
A cardinal (Richmondena cardinalis) of mass 3.80×10^?2 kg and a baseball of mass 0.145g have the same kinetic energy. What is the ratio of the cardinal's magnitude of momentum to the magnitude of the baseball's momentum?
A plastic bar that is 20 cm long passes a total charge of 5.0 nC distributed evenly along its length, Find the x component of the electric field at point (0.0m,0.10m)
While at a country fair, you decide to ride the Ferris wheel. Having eaten too many candy apples and elephant ears, you find the motion somewhat unpleasant. Calculate the magnitude of your acceleration
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