A light bulb used in a slide projector draws a current of 6 amperes when operating on 120 volts.The power consumed by the light bulb is __________
Fill in the blank(s) with correct word
720 watts
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Which statement about pulsars is true?
A) Pulsars can form only in close binary systems. B) All pulsars are neutron stars, but not all neutron stars are pulsars. C) Pulsars can "pulse" no more than about once a day. D) All neutron stars are pulsars.
In 1908 there was a huge explosion referred to as the Tunguska event which occurred in Siberia. Apparently this was caused by a very large meteorite, a small asteroid, or a comet colliding with the Earth. If the energy released, estimated at 5 × 10^16 J, were from the kinetic energy of the object, what would have been its approximate mass if its speed had been 104 m/s?
a. 106 kg b. 109 kg c. 1012 kg d. 1014 kg
You are riding in a spaceship that has no windows, radios, or other means for you to observe or measure what is outside. You wish to determine if the ship is stopped or moving at constant velocity. How can you do this?
A) You can determine if the ship is moving by determining the apparent velocity of light in the spaceship. B) You can determine if the ship is moving by checking your precision time piece. If it's running slow, the ship is moving. C) You can determine if the ship is moving by lying down and measuring your height. If you are shorter than usual, the ship is moving. D) You should give up because you have taken on an impossible task!
For the circuit in the figure below, is the instantaneous voltage of the source is equal to