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A glass windowpane in a home is 0.62 centimeter thick and has dimensions of 1.12 m × 2.10 m. On a certain day, the indoor temperature is 26°C and the outdoor temperature is 0°C. (Suppose the thermal conductivity of the glass is 0.8 J/s•m•°C.)
(a) Find the rate at which energy is transferred by heat through the glass?
_________W
(b) Determine how much energy is lost through the window in one day, assuming the temperatures inside and outside remain constant?
_________J
A 3-kg steel ball strikes a wall with a speed of 13-m/s at an angle of 60.0° with the surface. It bounces off with the similar speed and angle. If the ball is in contact with the wall for 0.20s, what is the average force exerted by the wall on the..
For a particle on in a box running between x=0 and x=1 the function cos[n π x] is not a satisfactory solution. The function cos[n π x/2] is a satisfactory solution for a particle in a box running between -1 and 1. Explain
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 ghost leaves a thin slime of ectoplasm (n=1.8) on a puddle of water (1.33). When looking down with light shining on the puddle, What is a possible thickness of the slime
A fully loaded, slow-moving freight elevator has a cab with a total mass of 1310 kg, which is required to travel upward 50 m in 3.4 min, starting and ending at rest. The elevator's counterweight has a mass of only 960 kg, and so the elevator motor mu..
A rescue plane is flying at 300 m above the ground at 210 km/hr. It is going to drop a package of supplies to some survivors on the ground. how far from the survivors should it drop the package
A runner is practicing on a circular track that is 675 m in circumference. If he runs halfway around the track and stops at the farthest eastern point of the track, what is the distance he traveled
a small ball bearing is illuminated with blue light from an argon ion laser (4880 A.) What is the diameter of the ball bearing
At an outdoor market, a bunch of bananas attached to the bottom of a vertical spring of force constant 16.0 N/m is set into oscillatory motion with an amplitude of 20.0 cm. What is the weight of the bananas in newtons
A slide projector has a converging lens whose focal length is105.00 mm. (a) How far (in meters) from the lensmust the screen be located if a slide is placed 106.70 mm from thelens?
a hoop of mass M=2 kg and radius R=0.4 m rolls without slipping down a hill. what is the speed Vfinal at the bottom of the hill
A point source of light illuminates an aperture 1.90 away. A 11.5 -wide bright patch of light appears on a screen 1.40 behind the aperture. How wide is the aperture
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