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How long would it take a 750W electric heating plate to bring one liter of water to boil from 20 degrees celcius? If energy costs $0.15/kWhr, how much does it cost to boil the water?
A sample of an ideal gas is at a temperature of 320 K. The rmsmolecular speed at this temperature is measured as 1631 m/s. Calculate the mass of a molecule of this gas.
A 1.9-kg mass attached to a spring is displaced 7.6 cm from the equilibrium position. What is the energy of the motion when the mass passes through the equilibrium position
A square steel plate is 0:20 m on a side and 4:00 mm thick. Find the displacement of the plate
A uniform stick d = 1 m long with a total mass of 249 g is suspended vertically from a frictionless pivot at its top end. A wad of putty of mass 26 g is moving horizontally with speed v. It strikes and sticks to the stick at a distance 0.75 m from..
Create your own 2D kinematics problem and present a detailed solution that includes a sketch. the problem must begin and conclude at different heights, find the maximum height and total time in the air
a 25 gram bullet moving at 550 ms strikes and imbeds itself in a 3.5-kg wooden block that is at rest on a level
question a spherical object has an outside diameter of 50.0 . its outer shell is composed of aluminum and is 1.80
A distant galaxy is moving away from the earth with a speed that results in each wave- length received on the earth being shifted, Find the speed of the galaxy relative to the earth
The electron is heading at a 45 angle directly toward the wire when it is 50cm away; the electron reaches only as close as 1.0 cm, before being repelled away, always moving in the same plane. If the electron has an initail speed of 3.4 x 10^6 m/s,
On a cloudless day, the sunlight that reaches the surface of the earth has an intensity of about 1.5 × 103 W/m2. What is the electromagnetic energy contained in 5.0 m3 of space
A fiber optic cable has n=1.4 in the center and n=1.2 for cladding. If a light pulse is incident along the cable's axis, what is the maximum angle the cable can be bent
a railroad car of mass 2.50 104 kg moving at 2.00 ms collides and couples with two coupled railroad cars each of the
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