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A person pulls a toboggan for a distance of 43.6 m along the snow with a rope directed 28.3 ° above the snow. The tension in the rope is 91.3 N.
(a) How much work is done on the toboggan by the tension force?
(b) How much work is done if the same tension is directed parallel to the snow?
A 3.0 uF capacitor is put across a 12 V battery. What is the initial current through the resistor when the switch is closed
Three uniform thin rods, each of length L = 19 cm, form an inverted U. The vertical rods each have a mass of 12 g; the horizontal rod has a mass of 44 g. What are (a) the x coordinate and (b) the y coordinate of the system's center of mass.
A tall tree is growing across a river from you. You would like to know the distance between yourself and the tree,as well as its height, How far away is the tree
In a physics lab experiment for the determination of moment of inertia, a team weighs an object and finds a mass of 3.38 kg. What is the moment of inertia of the object
An electrical point charge of 4.50 mC is located on the x-axis at x = 8.00 cm. A second point charge is located on the y-axis at y = 5.70 cm. What is the distance between the two charges
An electron in a vaccuum is first accelerated by a voltage of 10,000 volts, find the force of the electron due to the magnetic field
A copper ball with a radius of 1.5cm is heated until its diameter has increased by 0.17mm .Assuming an initial temperature of 21?C
A jet with mass m = 1.3 × 105 kg jet accelerates down the runway for takeoff at 2.4 m/s2, What is the net horizontal force on the airplane
The fringes observed in a double-slit interference experiment when the two slits are illuminated by white light show dispersion of both light and color, how many bright fringes can be seen on the screen
a 9.5-uC charge is at x = 15 cm, y = 5.0 cm and a -3.2-uC charge is at x = 4.4 cm, y = 11 cm. Find the force on the negative charge
It is desired to project an image of an object four times actual size with a lens of focal length 20 cm. What object distance should be used
The current in a coil drops from 4.1 A to 2.4 A in 0.49 s. If the average emf induced in the coil is 12 mV, what is the self-inductance of the coil
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