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A heat engine is to be built to extract energy from the temperature gradient in the ocean.
Part A If the surface and deepwater temperatures are 25.2 oC and 8.05 oC, respectively, what is the maximum efficiency such an engine can have?
A car takes 11 s to go from v = 0 to v = 75 m/s at approximately constant acceleration. If you wish to find the distance travelled using equation d = 1/2 at2, what value should you use for a.
A juggling bag is thrown straight up into the air and is caught 3 s later, What is the initial velocity of the bag
A parallel plate capacitor is connected to a battery. The space between the plates is filled with air. Find the electric field inside the dielectric
A meteorologist tracks the movement of a thunderstorm with Doppler radar, What is the direction of the average velocity of the storm
A 1.2 kg mass attached to a spring oscillates with amplitude of 6.3 cm and a frequency of 1.1 Hz. What is its energy of motion.
At a distance r away from a point charge q the electric potential V = 500.0 V and the electric field has a magnitude of 220.0 N/C
Two balls of identical mass of 1.152 kg and with identical charges placed on them hang from the ceiling on identical strings of lengths 1.310 m. If the angle with respect to the vertical that the strings form is 24.5 degrees.
what is the maximum weight of the crate that the system can support? What is the angle needed for equilibrium.
A uniform plank of length 4.3 m and weight 201 N rests horizontally on two supports, with 1.1 m of the plank hanging over the right support (see the drawing). To what distance x could a person who weighs 449 N walk on the overhanging part of the p..
A man stands on a platform that is rotating (without friction) with an angular speed of 1.0 rev/s; his arms are outstretched, What is the resulting angular speed of the platform
At Earth location, the intensity of sunlight is 1.5 kW/m2. by how much would Earth's mass increase in 1 day
Points A and B have electric potentials of 257 V and 129 V, respectively. When an electron released from rest at point A arrives at point C its kinetic energy is KE1, What is the electric potential at point C
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