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An electric heater is rated at 1500 W, a toaster at 750 W, and an electric grill at 1000 W. The three appliances are connected in parallel to common 120 V household circuits. (a) How much current does each draw? (b) Is a circuit with a 25.0 Amp circuit breaker enough in this situation? Numerically justify your answer.
In a purely inductive circuit of 36 mH, the freq is 71 Hz and the maxium voltage is 317 V. Find the rms current in the circuit
A charged particle is injected at 215 m/s into a 0.0739-T uniform magnetic magnetic field perpendicularly to the field. What is the charge-to-mass ratio of this particle
from the scattering of sunlight, J. J. Thomson calculated the classical radius of an electron as having the value 2.82 ×10-15 m. Sunlight with an intensity of 500 W/m2 falls on a disk with this radius.
A cylinder of mass 6.9 kg and radius0.20 m rolls along a level floor. Itscenter of mass has a speed of 0.8 m/s. Find the kinetic energy of rotation
two 10-cm-diameter charged disks face each other 21 cm apart. both disks are charged to - 70 nc.the electric field
A gas undergoes an isochoric heating during which it gains 5760 Joule of heat, attaining a pressure of 3.91x105 Pa. Calculate the total change in internal energy of the gas
An 80 kg skier starts down a flat slope that makes a 16 degree angle, with respect to the horizontal. at what speed is the skier moving at an altitude of 4100 ft
A 3.57 kg block is drawn at constant speed 4.06m along ahorizontal floor by a rope. evaluate the work done by the rope's force
Compute the linear momentum and angular momentum of a Frisbee of mass 0.159 kg if it has a linear speed of1.85 m/s and an angular velocity of46.0 rad/s. Treat the Frisbee as a uniformdisk of radius 12.5 cm.
A girl coast down tha hill on a sled, reaching a levelsurface at the bottom with a speed of 7.0 m/s. how far does the sled travel on the level surface before coming to rest
Westerly winds coming off the Pacific Ocean rise over the Rocky Mountains, which rise to a height of approximately 15,000 feet (580 hPa). The air on the western side of the mountain range is at 800 hPa (T = 70F, r = 0.75), and will subside on the ..
A raindrop of mass 3.35 10 -5 kg falls vertically at constant speed under the influence of gravity and air resistance. Model the drop as a particle. As it falls 100 m,what is the work done on the raindrop (a) by the gravitational force and (b) by air..
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