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A particle of mass 7 × 10-5kg and charge1 µC moves downward from point A to pointB a distance of 6 m in the earth's gravitational field. The kinetic energy of the particle decreases by 4.7 mJ during this movement. What is the potential difference VB - VA?The acceleration of gravity is 9.8 m/s2.Answer in units of kV.
A rocket sled moved down a track at 632 mi/h and came to rest in 1.4 s.determine the negative acceleration and the distance traveled
An electric current of 1 A flows through a 20 ? resistor which is kept at a constant temperature of 10° C by flowing water. In 1 s what is the entropy change of the resistor and the entropy change of the water?
q1. a rifle fires a 2.39 10-2-kg pellet straight upward since the pellet rests on a compressed spring that is released
A thin spherical shell has a radius of 2.8 m and a mass of 410 kg, and its center is located at the origin of a coordinate system. Another spherical shell with a radius of 1 m and mass 165 kg is inside the larger shell with its center at 0.6 m on the..
one mole of an ideal monoatomic gas initially at 300 k is expanded from an initial pressure of 10 atm to a final
An airplane with a speed of 87.7 m/s is climbing upward at an angle of 35.1 ° with respect to the horizontal. determine the angle of the velocity vector of the package
What is the resistivity of a resistor? What characteristics of a resistor affect the resistivity? Write a formula for this relationship, label each variable and indicate the units used to measure each. Would resistivity be constant for a specific ..
What constant acceleration does Mary now need during the remaining portion of the race, if she wishes to cross the finish line side-by-side with Sally?
Initially unpolarized light is sent into a system of three polarizing sheets whose polarizing directions make angles of ?1 = ?2 = ?3 = 50 deg with the direction of the y-axis
What is the rotational kinetic energy of the Earth? Use the moment of inertia you calculated in Part A rather than the actual moment of inertia given in Part B.
A first order (m=1) spectral line is observed at theta1 = 18.3 deg. At what angle will the same spectral line be observed in second order (m=2)
You want to design a helium-filled balloon that will lift a whole payload of 1350 kg. Find what volume of helium is required to just barely lift this payload
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