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A glass windowpane in a home is 0.62 cm thick and has dimensions of 0.8 m 1.9 m. On a certain day, the indoor temperature is 22°C and the outdoor temperature is 0°C.
(a) What is the rate at which energy is transferred by heat through the glass? .
(b) How much energy is lost through the window in one day, assuming the temperatures inside and outside remain constant?
A fisherman notices that his boat is moving up and down periodically without any horizontal motion, owing to waves on the surface of the water. How fast are the waves traveling
A 67.0-kg person throws a 0.0500-kg snowball forward with a ground speed of 25.0 m/s. A second person, with a mass of 59.0 kg, catches the snowball. Both people are on skates. The first person is initially moving forward with a speed of 2.10 m/s, and..
A woman at an airport is towing her 23.5-kg suitcase at constant speed by pulling on a strap at an angle ? above the horizontal. What is the magnitude of the normal force that the ground exerts on the suitcase
0.025m3 of oxygen at 150 kpa in a piston cylinder device expands polytropically with n 1.2 to a volume of 0.25m3. what
Estimate the wavelength of the light.
A potential difference of 1.50 V will be applied to a 40.0 m length of 18-gauge copper wire (diameter 0.04 in.), find the rate at which thermal energy will appear in the wire
A grade school student plans to build a 34-power telescope as a science fair project. What focal length is needed for her objective lens
A 302 kg car moving at 15.7 m/s hits from behind another car moving at 10.6 m/s in the same direction. what is the velocity of the first car after the collision
An athlete swims the length L of a pool in a time t1 and makes the return trip to the starting poisition in a time t2. What is her average speed for the round trip
A helicopter is ascending vertically with a speed of 5.30{rm m/s}. At a height of 120 {rm m} above the Earth, package is dropped from a window.
You are on a boat in a fog and know there are cliffs ahead of you somewhere, but you cannot see them. How far away are the cliffs
Your 85-kg friend (modeled in the picture as a box) is a window-washer and leans a ladder against a large frictionless window. What is the force from the wall on the ladder
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