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A carnot engine operates between a hot reservoir at 310 K and a cold reservoir at 280 K. If it absorbs 500 J of heat at the hot reservoir, how much work (in joules) does it deliver?
A cell membrane is composed of lipid molecules and approximately 10.48 nm thick. If the dielectric constant of the lipid is k = 5, what is the approximate capacitance of a spherical cell that has a diameter of 10.48 mu m?
Three capacitors numbered 1, 2 & 3, each have the same value of capacitance, What is the effective total capacitance
If a book rests motionless on a table, what forces areacting on it, What is the net force on the book
The Zacchini family was renowned for their humancannonball act in which a family member was shot from a cannon using either elastic bands or compressed air. what was the magnitude of the force propelling him
A net force of 19 newtons is applied horizontally to a 10. kilogram block resting on a table. What is the magnitude of the acceleration of the block
A light string is wrapped around a 0.20-kg hollow 0.080-m-radius hoop. What is the angular acceleration of the hoop
A laser that emits pulses of UV lasting 3.65 ns has a beam diameter of 1.60 mm. What is the maximum electric field strength in this pulse
Jim's dog Sparky runs 45.0 northeast to a tree, then 75.0 west to a second tree, and finally 15.0 south to a third tree. Calculate the direction of Sparky's net displacement
A proton with a speed of 3.0 x 105 m/s falls through a potential difference V and thereby increases its speed to 9.0 x 105 m/s. Through what potential difference did the proton fall
A 0.45kg piece of putty is dropped from a height of 2.5m above a flat surface. find the magnitude of the average force exerted on the putty
An electron acquires 5.95×10?16J of kinetic energy when it is accelerated by an electric field from plate A to plate B
A Styrofoam box has a surface area of 0.79 m2 and a wall thickness of 2.0 cm. The temperature of the inner surface is 5.0°C, determine the thermal conductivity of the Styrofoam
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