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A horizontal rod 0.200 m long carries a current through a uniform horizontal magnetic field of magnitude 0.067 T that points perpendicular to the rod. If the magnetic force on this rod is measured to be 0.13 N, what is the current flowing through the rod?
If the temperature outside is a freezing -15 (celsius), and as you drive at 60 km/h, you see a police car heading towards you, How fast is the police car traveling
A 70.0 kg girl lowers herself to the ground from a height of 8.8 m by holding onto a rope running over a pulley to a 54.0 kg sandbag. what is her speed when she reaches the ground
A cluster of galaxies has a radius of about 5.2 million light-years (4.9×10^22) and an intracluster medium with a temperature of (6.5×10^7) K. Estimate the mass of the cluster. Give the answer in both kilograms and solar masses. Suppose combined l..
A merry-go-round (carousel) with a moment of inertia of 594 kg·m2, is initially rotating horizontally at 2 rad/s about a frictionless axis through its center.
A 72-kg base runner begins his slide into second base when he is moving at a speed of 3.9 m/s. How far does he slide
What is the minimum speed you must give the air at the top. find its final kinetic energy.
Find the x-component of vector a = (9.0 m/s^2, - y direction), Find the y-component of vector a = (9.0m/s^2, -y direction)
Two pots are identical except that the flat bottom of one is aluminum, whereas that of the other is copper. find the temperature of the heating element on which the copper bottom rests
A spherical balloon has a radius of 12.5 m, and is filled with helium. How large a cargo can it lift, assuming that the skin and structure of the balloon have a mass of 1200 kg? avoid the bouyant force on the cargo volume itself.
A coal fired plant generates 600 MW (5.18 x 10^13 J/day) of electric power. The plant burns 4.8 x 10^6 kg of coal each day. what is the ideal efficiency of this plant
The index of refraction for red light in water is 1.331 and that for blue light is 1.340. what are the underwater angles of refraction for the blue and red components of the light
A light bulb is wired in series with a 124 resistor, and they are connected across a 120.0-V source. What is the resistance of the light bulb
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