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A small electric immersion heater is utilized to heat 170 g of water for a cup of instant coffee. The heater is labeled "200 watts", which means that it converts electrical energy to thermal energy at this rate. Compute the time required to bring this water from 25°C to 100°C, ignoring any heat losses.
A proton accelerates from rest in a uniform electric field of 670 N/C. At some later time, its speed is 1.38 106 m/s. How far has it moved in that interval
Describe Erikson, Levinson, cognitive developmental theorists, Kohlberg, behavioral theorists, Bronfenbrenner, Holland, the eclectic theory, and composite theory.
It takes 20 turns to drive a screw completely into a block of wood. Because the friction force among the wood and the screw is proportional to the contact area among the wood and screw, the torque required for turning the screw increases linearly by ..
A cylindrical fishing reel has a moment of inertia of I =7.3 10-4 kg·m2 and a radius of4.0 cm. What is the force of the fish on the line
A 1000 kg car is traveling at a speed of 20 m.s-1 east and a 1200 kg car is traveling at 22 m.s-1 west. What is the velocity of the second car measured from the center of mass reference frame of the system?
Explain the law of electrostatics and a thorough explanation of the nature of the electric field created by point charges and charge dipoles
At what distance along the central axis of a ring of radius 1.8 cm and uniform charge 66 C is the magnitude of the electric field maximum.
A charge of 24.5uC is located at (4.40m, 6.22m), and a charge of-11.2uC is located at (-4.50m, 6.75m). What charge must be locatedat (2.23m, -3.31m) if the electric potential is to be zero at theorigin?
The primary coil of a transformer has 100 turns and its secondary coil has 400 turns. what voltage is present in its secondary coil
A bowling ball (m = 7.2 kg, r = 0.11 m) and a billiard ball (m =0.38 kg, r = 0.028 m) may each be treated as uniform spheres. Whatis the magnitude of the maximum gravitational force that each canexert on the other?
question a multi-turn square loop of wire 2.0 cm on each side is oriented so that a 5.00 mt magnetic field makes a
The sound level measured 5.2 m away from a jet engine is 140 dB. What is the intensity of the sound at 5.2 m? What is the power transmitted by the sound waves? At what distance is the sound level exactly half?
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