Which of the following has the most kinetic energy?
A) a 4-ton truck moving 20 km/hr
B) a 3-ton truck moving 30 km/hr
C) a 2-ton truck moving 40 km/hr
D) a 1-ton truck moving 50 km/hr
E) A, B, C, and D all have the same kinetic energy.
C) a 2-ton truck moving 40 km/hr
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A Styrofoam ice chest is 2 cm thick. If the inside of the chest is at 0ºC and outside the chest it is 25ºC, estimate the heat transfer by conduction through the Styrofoam per unit area.
What will be an ideal response?
What technology do astronomers use to search for extraterrestrial life?
a. space observatories b. radio telescopes c. refracting telescopes d. reflecting telescopes e. FM radio and televisions
The SI unit of frequency is ______________
Fill in the blank(s) with correct word
The person who first explained the blackbody spectrum was __________
Fill in the blank(s) with correct word