a) 7,920 watts
Physics, 02.01.2020 15:31, reggienald3095
A12-volt car battery uses about 660 amps. how much power does it use?
a) 7,920 watts
b) 672 watts
c) 648 watts
d) 55 watts
Answers: 2
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In positive numbers less than 1, the zeros between the decimal point and non zero are significant
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Consider a double atwood machine constructed as follows: a mass 4m is suspended from a string that passes over a massless pulley on frictionless bearings. the other end of this string supports a second similar pulley, over which passes a second string supporting a mass of 3m at one end and m at the other. using two suitable generalized coordinates, set up the lagrangian and use the lagrange equations to find the acceleration of the mass 4m when the system is released. explain why the top pulley rotates even though it carries equal weights on each side.
Answers: 2
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Athin nonconducting rod with a uniform distribution of positive charge q is bent into a circle of radius r. the central perpendicular axis through the ring is a z-axis, with the origin at the center of the ring. a) what is the magnitude of the electric field due to the rod at z = 0? n/c (b) what is the magnitude of the electric field due to the rod at z = infinity? n/c (c) in terms of r, at what positive value of z is that magnitude maximum? r (d) if r = 4.00 cm and q = 9.00 ยตc, what is the maximum magnitude? n/c
Answers: 1
A12-volt car battery uses about 660 amps. how much power does it use?
a) 7,920 watts
a) 7,920 watts
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