Velocity: The position x(t) of a particle as a function of time t is given by the equation x(t) = (3.5 m/s)t - (5.0 m/s2)t2. What is the average velocity of the particle between t = 0.30 s and t = 0.40 s?
Fill in the blank(s) with the appropriate word(s).
0.00 m/s
Physics & Space Science
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What three main observed phenomena are the strongest support for the "big bang" theory?
What will be an ideal response?
Physics & Space Science
Energy and Mass: The total energy of a moving electron is 0.758 MeV. What is the speed of the electron in terms of c? The mass energy of an electron is 0.511 MeV.
A. 0.739 c B. 0.794 c C. 0.306 c D. 0.933 c
Physics & Space Science
The first quarter Moon rises about noon today; what will its phase be, and when will it rise tomorrow?
What will be an ideal response?
Physics & Space Science
A 15-?F capacitor and a 25-?F capacitor are connected in parallel, and charged to a potential difference of 60 V. How much energy is then stored in this capacitor combination?
A. 50 mJ B. 18 mJ C. 32 mJ D. 72 mJ E. 45 mJ
Physics & Space Science