The electrical power dissipated in an appliance depends on

a. voltage.
b. current.
c. resistance.
d. all of these.


d

Physics & Space Science

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At what speed would a proton need to circle the Earth at a height of 1 000 km above the equator if the Earth's magnetic field is horizontal and directed north-south, with an intensity of 4.00 × 10?8 T? (The radius of the Earth is 6 400 km and the charge and mass of the proton are q = 1.60 × 10?19 C and mp = 1.67 × 10?27 kg. Ignore relativistic corrections.)

What will be an ideal response?

Physics & Space Science

Discuss the role that gravity assist played in Voyager 2 and its Grand Tour

What will be an ideal response?

Physics & Space Science

A stone is thrown with an initial speed of 15 m/s at an angle of 53° above the horizontal from the top of a 40-m building. If g = 9.8 m/s2 and air resistance is negligible, then what is the magnitude of the horizontal component of velocity as the rock strikes the ground?

a. 7.5 m/s c. 12 m/s b. 9.0 m/s d. 29 m/s

Physics & Space Science

In ?- decay, the number of protons in the nucleus is

A) decreased by 1. B) decreased by 2. C) increased by 1. D) increased by 2. E) remains unchanged.

Physics & Space Science