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Suppose 2.50 kg of 32 degrees C water is mixed with 9.30 kg of 65 degrees C water. If no heat is lost in this system, what is the final temperature of the water?
A parallel-plate capacitor is to be constructed by using, as a dielectric, rubber with a dielectric constant of 3.20, What is the minimum area the capacitor plates can have
A golf ball of mass 50 g released from a height 1.5m above a concrete floor bounces back to a height of 1.0 m. What is the amount of energy lost during the impact
The tuner starts with the tension in the E string a little low, after that tightens it. What is the frequency of the E string while she hears four beats per second.
A number of people are riding in a hot-air balloon. The combined mass of the people and balloon is 281 kg. The balloon is motionless in the air, since the downward-acting weight of the people and balloon is balanced by an upward-acting 'buoyant' f..
Suppose two parallel-plate capacitors have the same charge q, but the area of capacitor 1 is A and the area of capacitor 2 is 2A. what is the voltage across capacitor 2?
An undiscovered planet, many lightyears from Earth, has one moon in a periodic orbit. calculate the moon\'s radial acceleration
A 160 g ball on a 70.70 cm long string is swung in a vertical circle about a point 184 cm above the floor. The string all of a sudden breaks when it is parallel to the ground and the ball is moving upward. The ball reaches a height 543 cm above th..
When the pitcher throws his fastball aimed at the clay, the ball becomes embedded in the clay and the two swing up to a maximum height of 0.11 m. If the mass of the baseball is 0.21 kg, find out the speed of the pitch. Please provide step by step ..
In a head-on collision, a car stops in 0.17s from a speed of 30m/s . The driver has a mass of 78kg, What force is applied to the driver by his seat belt during that fraction of a second
a ball moving at 5m/s collides head on elastically with a ball at rest. what are the velocities or the two balls after the collision
When a current flows in an aluminum wire of diameter 3.29 mm, the drift speed of the conduction electrons is 2.85 × 10-4 m/s. What is the electron current in the wire
Calculate the amount Stansfield should report as net cash provided (used) by financing activities in its 2010 statement of cash flows. (Enter amount as positive.)
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