Calculate the product of 2.1 × 10^2 and 1.9 × 10^7 . Express the answer in standard powers-of-10 notation
3.99 × 10^9
Physics & Space Science
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Morning dew on the grass is a result of
A) evaporation of water. B) the open-structured form of water crystals. C) air pressure on water vapor. D) slow-moving water molecules sticking to one another.
Physics & Space Science
Pluto was discovered in:
A) ancient times. B) 1789. C) 1859. D) 1930. E) 1992.
Physics & Space Science
What value of B should be used in a velocity selector to separate out 2.0-keV protons if E is fixed at 80 kV/m?
a. 0.18 T b. 0.11 T c. 0.15 T d. 0.13 T e. 0.23 T
Physics & Space Science
Kinetic Energy: What is the minimum energy needed to change the speed of a 1600-kg sport utility vehicle from 15.0 m/s to 40.0 m/s?
A. 1.10 MJ B. 10.0 kJ C. 20.0 kJ D. 40.0 kJ E. 0.960 MJ
Physics & Space Science