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A glass windowpane in a home is 0.62 cm thick and has dimensions of 1.2 m 2.4 m. On a certain day, the indoor temperature is 27°C and the outdoor temperature is 0°C.
(a) What is the rate at which energy is transferred by heat through the glass?
W
(b) How much energy is lost through the window in one day, assuming the temperatures inside and outside remain constant?
J
Two wires made of the same material are stretched by equal forces. The second wire is twice as long as the first one, by how long is the second wire stretched
A 10.0-m long wire whose total mass is 39.5 grams is under a tension of 577N. Where do the pulses first meet
A light bulb has a resistance of 270 . It is connected to a standard wall socket (120 V rms, 60.0 Hz). Determine the rms current in the bulb
A cue ball (mass = 0.145 kg) is at rest on a frictionless pool table. The ball is hit dead center by a pool stick, which applies an impulse of +1.15 N · s to the ball. Find the velocity of the second ball just after it is struck
Forensic scientists can measure the muzzle velocity of a gun by firing a bullet horizontally into a large hanging block that absorbs the bullet and swings upward. What was the original speed of this bullet
Light from a sodium lamp (lamda=589 nm) illuminates two narrow slits. The fringe spacing on a screen 150 cm behind the slits is 4.0 mm. What is the spacing (in mm) between the two slits
A ball of moist clay falls 17.7 m to the ground. It is in contact with the ground for 15.0 ms before stopping. What is the average acceleration of the ball
A rectangular coil with 18 windings carries a current of 2 mA flowing in the counterclockwise direction. What torque must be applied to the loop to hold it steady
At a certain location, the Earth's magnetic field has a magnitude of 5.6*10^-5 T and points in a direction that is 68° below the horizontal. Find the magnitude of the magnetic flux through the top of a desk at this location that measures 110 cm by 71..
A 2.65 kg object is moving in a plane, with its x and y coordinates given by x = 2t2 - 3 and y = 2t3 + 6, where x and y are in meters and t is in seconds. Find out the magnitude of the net force acting on this object at t = 2.00 s.
A disk has a moment of inertia of (3.0E-4) kg.m^2 and rotates with an angular speed of 3.5 rad/sec. What net torque must be applied to bring it to rest within 3s
A thin film of oil (n=1.26) is located on smooth, wet pavement. When viewed from a direction perpendicular to the pavement, evaluate the minimum thickness of the oil film
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