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A picture window has dimensions of 1.40m x 2.50m and is made of glass 5.20mm thick. On a winter day, the outside temperature is -15.0 degrees C , while the inside temperature is a comfortable 21.0 degrees C .
A. At what rate is heat being lost through the window by conduction?
B. At what rate would heat be lost through the window if you covered it with a 0.750 -thick layer of paper (thermal conductivity 0.0500 )?
What is the charge on a 1.0 cm length of wire. What is the net force exerted on the skier.
WThe vertical displacement of particles in a string (when a wave is propagating through it) is given by y = (0.02) sin[(10?)t %u2013 (8?)x]
The eye focuses by:
The coils of a motor's rotor have resistance of 2.0 Ω. When the motor runs at full speed, powered by 115V linevoltage it draws a current of 9A. What is the back electromagnetic field (emf) in this motor under those conditions? If the motor is preve..
An electron with an initial speed of 4.90×105m/s is brought to rest by an electric field. What was the potential difference that stopped the electron
A large 16.0-kg roll of paper with radius R=18.0cm rests against the wall and is held in place by a bracket attached to a rod through the center of the roll. find the magnitude of the angular acceleration of the roll
An air-track glider attached to a spring oscillates between the 12.0cm mark and the 63.0cm mark on the track. What is the maximum speed of the glider
A hiker's trip consists of three segments. Path A is 9km long heading 60.0° north of east. Path B is 6.0km long in a direction due east. Path C is 5.0 km long heading 315° counter clockwise from east.
A billiard ball strikes and rebounds from the cushion of a pool table perpendicularly. The mass of the ball is 0.16 kg. The ball approaches the cushion with a velocity of +1.6 m/s and rebounds with a velocity of ?1.2 m/s
A wave pulse travels down a slinky. The mass of the slinky is m = 0.9 kg and is initially stretched to a length L = 7.3 m. What is the speed of the wave pulse
an egg is thrown nearly vertically upward froma pointnear the cornice of a tall building. what is the initial speed of the egg
A satellite with a mass of 270 kg moves in a circular orbit 4.00 107 m above the Earth's surface. (a) What is the gravitational force on the satellite? . N (b) What is the speed of the satellite? . km/s (c) What is the period of the satellite?
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