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A battery with an emf of 12.0 V shows a terminal voltage of 11.0V when operating in a circuit with two lightbulbs rated at 3.0 W (at 12.0 V) which are connected in parallel.
What is the battery's internal resistance?
What is the direction of the force that the unknown charge exerts on the charge of magnitude 0.580uC?
The arm of a crane at a construction site is 14.4 m long, and it makes an angle of 40° with the horizontal. Assume that the upmost load the crane can handle is limited by the amount of torque the load produces at the base of the arm.
A rescue plane flies horizontally at a constant speed searching for a disabled boat, If it takes the sound 2.10 s to reach the plane, determine the speed of the plane and What is its altitude
Now a peg is placed 4/5 of the way down pendulum's path so that when the mass falls to its vertical position it hits and wraps around the peg. As it wraps around the peg and attains its maximum height it ends a distance of 3/5 L below its starting po..
What is braking distance for the first train
Different values of the energy
A wooden raft has a mass of 81 kg. while empty it floats in water (density 1000 kg/m3) with 64% of its volume submerged. What mass of sand can be put on the raft without it sinking.
A sphere of mass M is supported by a string that passes over a pulley at the end of a horizontal rod of length L, Find the mass of the portion of the string above the rod
Two particles with charges +4e and -7e are initially very far apart, which is the change in the electric potential energy
The battery has internal resistance of 0.100 Ω, and the rod and rails have negligible resistance. A 2.02 T magnetic field is directed perpendicular to the plane of the circuit. Find the magnetic force on the rod. F= 38.78 N. Find out the rod's spe..
A test rocket is fired vertically upward from a well. A catapult gives it an initial speed of 80.6m/s at ground level. Its engines then fire and it accelerates upward at 3.80 m/s2 until it reaches an altitude of 930m. At that point its engines fai..
The total electric field consists of the vector sum of two parts, Find the magnitude and direction of the total field, Specify the directional angle relative to the x axis
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