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A piece of iron is heated with a torch to a temperature of 648 K. How much more energy does it emit as blackbody radiation at 648 K than it does at room temperature, 291 K?
The length of a hollow pipe closed at one end
A laser beam is incident at an angle of 38.0 degree to the vertical onto a solution of corn syrup in water. find what the index of refraction of the syrup solution
A movie camera with a (single) lens of focal length 85 mm takes a picture of a person standing 35 m away. what is the height of the image in millimeters on the film
An explorer is caught in a whiteout (in which the snowfall is thus thick that the ground cannot be distinguished from the sky) while returning to base camp. Find how far must he now travel to reach base camp
Two equal piano wires have a fundamental frequency of 600 Hertz when kept under the same tension. Obtain what fractional increase in the tension of one wire
A planoconcave lens (n = 1.52) has a focal length of -24.6cm. What is the radius of the concave surface
an engine has a hot reservoir temperature of 935 k and a cold reservoir temperature of 616 k. the engine operates at
A small block with mass 0.706 kg is sliding down a frictionless ramp that is inclined at an angle of 53.1° above the horizontal. Assume g = 9.80 m/s2. what is the magnitude of the normal force that the surface of the incline exerts on the block
A rookie quarterback throws a football with an initial upward velocity component of 15.2 meter per second and a horizontal velocity component of 18.1 m/s. Determine how much time is required for the football to reach the highest point of the trajec..
Ilya and Anya each can run at a speed of 7.10mph and walk at a speed of 3.00mph. They set off together on a route of length 5.00miles. How long does it take Ilya to cover the distance
A futuristic design for a car is to have a large disk -like flywheel within the car storing kinetic energy. find the maximum attainable speed of the car
What is the threshold energy for this reaction to occur
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