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Describe the difference between two light bulbs in series and two light bulbs in parallel. Explain how would you wire each connection?
A playground merry-go-round has a radius of 4.40 m and a moment of inertia of 255 kg*m^2 and turns with negligible friction about a vertical axle through its center. What is the average power supplied by the child
a cargo barge is loaded in a saltwater harbor for a trip up a freshwater river. if the rectangular barge is 3.50 m by
A vertical spring stretches 4.2 cm when a 14-g object is hung from it. The object is replaced with a block of mass 22 g that oscillates up and down in simple harmonic motion. Calculate the period of motion. ____s . Use the given information to find t..
A woman can read the large print in a newspaper only when it is at a distance of 55 cm or more from her eyes. What should be the refractive power (in diopters) of her glasses
a devive consists of four balls. just after the impact, what is the angular speed of the device
Derive the electric potential V for a single current electrode placed at the surface of an isotropic medium. The current injects current I into the medium that has resistivity r. Assume that the air is non-conductive.
calculate the energy released by fission of 1 g of uranium-235 in mwd mega watt day assuming that the energy per
A student sits on a swivel seat. Initially the student is at rest,holding a spinning bicycle wheel that has an angular velocity of14.2 rad/s (see figure below). The studentturns the spinning wheel upside down, reversing the direction ofits angular..
A 921 kg car is moving rightward with a speed of 29.0 m/s. find the average resistive force acting upon the car
In a model AC generator, a 497 turn rectangular coil 7.0 cm by 26 cm rotates at 123 rev/min in a uniform magnetic field of 0.61 T. What is the maximum emf induced in the coil
An osprey’s call is a distinct whistle at 2200 {rm Hz}. An osprey calls while diving at you, to drive you away from her nest. You hear the call at 2300 {rm Hz}. Explain how fast is the osprey approaching?
The GPS network consists of 24 satellites, each of which makes two orbits around the earth per day. Each satellite transmits a 50.0 W ( or even less) sinusoidal electromagnetic signal at two frequencies, What average intensity does a GPS receiver o..
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