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(a) How much heat is needed to raise the temperature of a 1.0-kg steel pot containing 2.0 kg of water from 25°C to the boiling point and then to boil away 0.50 kg of the water?
(b) If heat is supplied to the pot of water at the rate of 125 cal/sec, how long will this take?
When the lights of a car are switched on, an ammeter in series with them reads 7.52 A and a voltmeter connected across them reads 12.0 V, find the current through the starting motor
A battery in a circuit has an emf of 8.8 V. The only other component in the circuit is a resistor. 4.4 A of current flows in the circuit. What is the potential difference across the battery
A person travels by car from one city to another with different constant speeds between pairs of cities. She drives for 30.0 min at 90.0 km/h, 5.0 min at 90.0 km/h, Determine the average speed for the trip
A helium-neon laser of the type often found in physics laboratories has a beam power of 4.00 mW at a wavelength of 633 nm. Calculate the force exerted on this sphere
A particular heat engine has a mechanical power output of 6.00 kW and an efficiency of 28.0%, Find the energy taken in during each cycle
Type yourAfter a plant or animal dies, its 14C content decreases with a half-life of 5730 years. what is the age of the ancient site
A student sits on a rotating stool holding two 2.0-kg objects. When his arms are extended horizontally, Find the new angular speed of the student
At time t = 0, a ball is struck at ground level and sent over level ground. At what initial angle above the horizontal is the ball launched
8.95 H inductor with negligible resistance is placed in series with a 15.3 V battery, a 3.00 ? resistor, Calculate the current as time approaches infinity
You are standing 3.0 m from a convex security mirror in a store. Estimate the radius of curvature of the mirror
Illustrate what is the time necessary for crossing if the hunter wishes to move neither upstream nor downstream whilst crossing the river? Draw the vectors to scale on a graph to determine the answer.
A 0.50 microF and a 1.4 microF capacitor (C1 and C2, respectively) are connected in series to a 15-V battery, Calculate the potential difference across each capacitor
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