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A horizontal 790-N merry-go-round of radius 1.60 m is started from rest by a constant horizontal force of 55 N applied tangentially to the merry-go-round. Find the kinetic energy of the merry-go-round after 4.0 s. (Assume it is a solid cylinder.)
Consider two parallel-plate capacitors, C1 and C2, that are connected in parallel. The capacitors are identical except that C2 has a dielectric inserted between its plates. What is the final voltage across the two capacitors
suppose that they have same internal energy, which will have a higher temperature: a metal knife in thermal equilibrim with a hot griddle or a 1kg block of ice at -25C or seven 12g ice cubes at -25C.
A 14.0 capacitor and a 5.50 inductor are connected in series with an open switch. The capacitor is initially charged to 6.70 What is the angular frequency of the charge oscillations
A 60.0 gram golf ball is dropped from a height of 2.00 meters. how much energy did the ball lose
A toy cork gun contains a spring whose spring constant is 10.02 N/m. The spring is compressed 5.0 cm and then used to propel a 6.00 g cork. The cork, however, sticks to the spring for 1 cm beyond its unstretched length before separation occurs. The m..
A point source of light is located at the bottom of a steel tank, and an opaque circular card of radius 5.7 cm is placed over it. What is the index of refraction of the fluid
A particular nucleus of the element plutonium contains 94 protons and 150 neutrons. What is the magnitude of the force from the nucleus on a single electron that is at a distance of 0.563 × 10-12 m from the plutonium nucleus.
A 3.68-kg fish swimming 1.33 m/s swallows an absent-minded 6.42-kg fish swimming toward it at a velocity that brings both fish to a halt immediately after lunch
A 5.0- kg block oscillates with an amplitude of 0.090 m on a light spring of constant k = 28.0 N/m. What is the maximum value of the block's velocity
Estimate the force P to accelerate the 80 - Ib block at 6ft/sec2 to the right.
q1. what mass in grams of steam at 100 c must be mixed with 175 g of ice at its melting point in a thermally insulated
A cell membrane has a surface area of 1.00 x 10-7 m2, a dielectric constant of 5.17 and a thickness of 8.17 nm. How many positive ions are there on the outside of the membrane
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