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A baking dish is removed from a hot oven and placed on a coolingrack. As the dish cools down to 32.0°C from 193°C, its netradiant power decreases to 11.0 W. What was the net radiant power of the baking dish when it was first removed from the oven? Assumethat the temperature in the kitchen remains at 22.0°C as thedish cools.
a childs pogo stick as shown below stores energy in a spring with a force constant of 2.55 x 104 nm. at position xa
A pulley, with a rotational inertia of3.2×10-3kg m2 about its axleand a radius of 8.0 cm, is acted on by a force applied tangentially at its rim. The force magnitude varies in time as F =0.46t + 0.32t2, where F is in newtons if t is given inseconds..
In some places, insect "zappers," with their blue lights, are a familiar sight on a summer's night. how many turns are in the secondary coil
Start with the thin lens equation and solve for the image distance in terms of the focal length and object distance. Use this to explain why you can expect a real image only
Oppositely charged parallel plates are separated by 4.52 mm. A potential difference of 600 V exists between the plates. (a) What is the magnitude of the electric field between the plates?
A parallel plate capacitor is constructed with Teflon (dielectric constant 2.1) between the plates. What charge was originally stored
Radio waves are diffracted by large objects such as buildings, whereas light is not noticeably diffracted by large objects such as buildings. Why is this?
A comet of mass m, following a trajectory that is a a parabola about the sun, collides with an equal mass at rest, determine the nature of the orbit after the collision
A series ac circuit contains a 230? resistor, a 13.0mH inductor, a 2.50?F capacitor, and an ac power source of voltage amplitude 45.0Voperating at an angular frequency of 360rad/s. Find the average power delivered to the entire circuit
The inductance of a closely wound coil is such that an emf of3.0 mV is induced when the current changes at the rate of4.6 A/s. Calculate the inductance of the coil
If a lens with focal length 10 cm is placed 30 cm from an image 3 cm tall, how tall is the resulting image
A converging lens of focal length 8.020 cm is 20.3 cm to the left of a diverging lens of focal length -6.47 cm. Find the magnification of the coin's final image
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