____________________ is a measure of the light energy that hits one square meter in one second
Fill in the blank(s) with correct word
Intensity
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A car and a truck are traveling in the same direction along a straight section of highway. The car is moving at 55. mph and the truck is moving 45. mph. What is the velocity of the truck relative to the car?
What will be an ideal response?
Which was NOT a Voyager discovery about the rings of Saturn?
A) They are made of tens of thousands of narrow ringlets. B) The F ring particles are herded by two shepherd moons. C) They have dark spokes that defy gravity. D) There are hundreds of smaller moons imbedded in them, creating the gaps. E) The E ring may have been made by volcanic eruptions from Enceladus.
A 300-g glass thermometer initially at 25°C is put into 200 cm3 of hot water at 95°C. Find the final temperature (in °C) of the thermometer, assuming no heat flows to the surroundings. (The specific heat of glass is 0.2 cal/g/°C.)
a. 52 b. 68 c. 89 d. 79 e. 36
How long will it take a charged 80-mF capacitor to lose 20% of its initial energy when it is allowed to discharge through a 45-W resistor?
a. 0.92 ms b. 0.64 ms c. 0.40 ms d. 0.19 ms e. 0.80 ms