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The filament of a light bulb has a resistance of 580 ?. A voltage of 120 V is connected across the filament. How much current is in the filament?
At the start of a trip, a driver adjusts the absolute pressure in her tires to be 2.82*10^5 Pa when the outdoor temperature is 286 K
It is proposed that a device be constructed to operate as follows: an evacuated tank of volume 1m3 is attached to the exhaust of an air-turbine-driven grinding
Consider two Carnot heat engines operating in series. The first engine receives heat from the reservoir at 1800 K, and rejects the waste heat
A Carnot engine operating at 30% efficiency exhausts heat into a heat sink at 283 K. By how much would the temperature of the heat reservoir
Two equipotential surfaces surround a +1.20 10-8 C point charge. How far is the 150 V surface from the 75.0 V surface?
A 200 lb metal object is suspended in a liquid with a specific gravity of 1.6. The metal object has a weight density of 150 lb/ft^3.
The rate of revolution of a multicylinder gasoline engine in an airplane, operating at 2500 rev/min, takes in energy 7.89*10^3 J and exhausts 4.58*10^3 J
A woman runs up a flight of stairs. The gain in her gravitational potential energy is U. If she runs up the same stairs with twice the speed.
A 20% efficient real engine is used to speed up a train from rest to 5.00 m/s. It is known that an ideal (Carnot) engine using the same cold and hot reservoir
A 100 kg object is pulled upwards 5.0 meters by a rope with an acceleration of 1.0 m/s^2. Find the work done by the tension force in the rope.
The heat engine operates reversibly and draws 1200 KJ of heat from the 200 K reservoir. The work produced is 200 KJ.
In an atwoods machine experiment, the larger mass is 1.8kg and the smaller mass is 1.2kg. Ignoring friction what is the acceleration of the masses.
(a) What is the momentum of a 1.20 x 10^4 kg garbage truck moving at 30.0 m/s? (b) At what speed would an 8.00 kg trash can have the same momentum?
In a steam plant the steam leaves the boiler at 2000kpa+250C deg. It is then expanded in an engine + finally exhausted into a condenser
How many revolutions do the tires make, neglecting any backing up and any change in the radius due to wear?
The figure shows a thermodynamic process followed by 150mg of helium.
A water well has an 8-inch diameter and is 175 feet deep. Assume that water enters the well at a rate of 4 gallons per minute.
Energy is conventionally measured in Calories as well as in joules. One Calorie in nutrition is one kilocalorie, defined as 1 kcal = 4186 J.
The work done by a conservative force on a particle is equal to the increase of the corresponding potential energy of the particle.
Learning Goal: To practice Problem-Solving Strategy for problems involving calculating work done on an ideal gas.
If the speed of the cycle at the bottom of the hill is 10ms(-1) what is the kinetic energy of the cycle+rider?
A single stage, singl.: acting air compressor running at 1000 rev/min delivers air at 25 bar. For this purpose the induction and free air conditions
A wheel that is rotating at 33.3 rad/s is given an angular acceleration of 2.15 rad/s/s. Through what angle has the wheel turned when its angular speed.
What will be the maximum kinetic energy (in eV) with which this same radiation ejects electrons from another metal whose work function is 2.01 eV?