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a piece of copper wire is formed into a rectangle. The length of the rectangle is 3m and the width is 2m. A magnetic field is everywhere oriented parallel to the normal to the loop(into the drawing), and it increases from 1T to 2Teslas in a time of 2 seconds. The wire has a resistance per unit length of (1/10) ohms/meter. what is the average electrical energy dissipated in the resistance of the wire?
Two wheels have the same mass and radius of 4.8 kg and 0.54 m, respectively. One has (a) the shape of a hoop and the other (b) the shape of a solid disk. The wheels start from rest and have a constant angular acceleration with respect to a rotational..
Consider a container with a partition in the middle. The container is thermally isolated from the environment. Initially one half of the container is filled with gas A (N molecules) and the other half with gas B (also N molecules).
A man pushes a heavy box up a plank inclined at an angle of 30. Calculate the ideal mechanical advantage of this incline plane
A 25 kg trunk strikes the ground with a speed of 12.5m/s. if no energy is lost from air resistance, what is the height from which trunk fell.
Pick what you think are the most reasonable choices for each parameter in the Drake equation and justify your choice. estimate the likely nearest distance to such a civilization
A certain lightbulb is rated at 175.0 W when operating at an rms voltage of 120 V. What is the peak voltage applied across the bulb
An unknown substance has a mass of 0.125 kg and an initialtemperature of 95.0°C. calculate the specific heat of the unknown substance
Sound is passing perpendicularly through an open window whose dimensions are 1.1 m x 0.75 m. How much sound energy comes through the window in one hour
q1. in a head-on collision a car stops in 0.27 from a speed of 12. the driver has a mass of 76 and is fortunately
Starting from rest at the ground floor, an elevator takes 19.0 seconds for a vertical trip of 70.0 meters. What is the maximum velocity of the elevator
a transformer can be used to step-up or step-down voltage. Since the power must be constant, What is the current in the primary
At full power, how long would it take for car to accelerate from 0 to 56 mph? Neglect friction and air resistance.
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