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1. The fact that an increase of pressure on an enclosed fluid is transmitted uniformly throughout the fluid is------------- law.
2. A hydraulic jack is used to lift a load of weight 1000N. The load-bearing cylinder has a radius of 4cm, and the other piston has a radius of 1cm. what force must be exerted on the smaller piston to support the load? show calculation.
3. If the atmospheric pressure is 1.1Af-10 raise to the power 5 Pa, the corresponding downward force on the top of a horizontal square areas 6cm on each side is approximately. show calculation.
4. A gas initially is at a pressure of 100Pa. If it's volume is halved while the absolute temperature is kept constant the new pressure will be --------------kpa. Explain your answer by using the appropriate law (formula).
5. A gas originally occupies a volume of 0.5m cube at a pressure of 100kpa. It is slowly allowed to expand until the volume is 2.5m cube. Assuming the temperature is kept constant, the final pressure will be: show calculation.
a point source of light is submerged 2.2m below the surface of a lake and emits rays in all directions. what is the maximum radius that this circle could have
very long straight wire has charge per unit length 1.41×1010C/m . At what distance from the wire is the magnitude of the electric field equal to 2.40N/C
A baseball thrown at a angle of 40.0 degrees above the horizontal at 15.0 m/s from the top of a vertical cliff strikes the ground 42.5 m from the base of the cliff. Ignore air resistance. Find the height of the cliff.
On an air track, a 402.0g glider moving to the right at 2.25m/s collides elastically with a 498.0g glider moving in the opposite direction at 2.90m/s. Find the velocity of second glider after the collision
Calculate the change in specific entropy of air as it is expanded from 2500kPa and 550 degrees C to 120kPa and 65 degrees C
A pendulum of length 7.87 m is released from rest at an angle of 22.4 º from the vertical. What is the maximum speed of the pendulum
On the planet Newtonia, a sample pendulum having a bob with mass 1.25 kg and a length of 185.0 cm takes 1.42 s, What is the mass of the planet Newtonia
A pinball bounced around its machine before resting between two bumpers. determine the total displacement\'s magnitude and direction
A poorly tuned Yugo can accelerate from rest to a speedof 28 m/s in 20 s. What is the average acceleration of the car
Two isotopes of a certain element have binding energies that differ by 4.9060 MeV. Find the difference in atomic mass between the two isotopes
At a height of fifteen meters above the surface of a freshwater lake, a sound pulse is generated. How deep is the lake
A 107A A current circulates around a 2.20-mm-diameter superconducting ring. What is the ring's magnetic dipole moment
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