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A 2.0 kilogram cart is initially at rest on a level floor. Determine the kinetic energy of the cart after a constant horizontal 8.0 newton force is applied to the cart over a distance of 1.5 meters.
A girl with a mass of 40 kg is swinging from a rope with a length of 3.2 m. What is the frequency of her swinging
Unpolarized light with an intensity of 275 W/m2 passes by the two polarizers whose transmission axes are at an angle of 30.0° with respect to each other. What is an intensity of the light transmitted through both polarizers.
A coil has 345 turns and self-inductance 3.60 mH. The current in the coil varies with time according to i = (680 mA) cos(?t/0.0250 s)
A) What are science misconceptions? What other names are used to refer to them? How are they formed? What difficulties do they present to the learning and understanding of science concepts?
The projection lens in a certain slide projector is a single thin lens. A slide 23.6 mm high is to be projected so that its image fills a screen 1.87 m high. Determine the focal length of the projection lens
Suppose that when a 12.0-V battery drives a current of 6.7 A through a resistive device, How much is the internal resistance (in ohms) of the 12.0-V battery
During a lunar eclipse, a picture of the moon (which has a diameter of 3.48×106 m and is 3.86×108m from the earth) is taken with a camera whose lens has a focal length of 305mm, What is the diameter of the image on the film
On average, an electric water heater operates for 1.2 h each day. It has a power requirement of 4500 W, What is the resistance of a typical water heater
In a friendly game of handball, you hit the ball essentially at ground level and send it toward the wall with a speed of 15 m/s at an angle of 32° above the horizontal. How long does it take for the ball to reach the wall if it is 4.2 m away
A helium-neon laser (?=633 nm) illuminates a diffraction grating. What is the spacing between slits of the grating
A solid spherical ball of mass 1.21 kg and radius 0.07 m rolls along a smooth, level surface with a speed of 2 m/s. How far up the plane does the ball go
A 9000-kg boxcar traveling at 16.0 m/s strikes a second boxcar at rest. The two stick together and move off with a speed of 6.00 m/s
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