The position of a particle as a function of time is given by 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?
What will be an ideal response?
0 m/s
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A heavy frog and a light frog jump straight up. They push off in such a way that they both have the same kinetic energy just as they leave the ground. Assume air resistance is negligible
Which of the following statements about these frogs are correct? (There could be more than one correct choice.) A) Just as they leave the ground, the heavier frog is moving faster than the lighter frog. B) Just as they leave the ground, the lighter frog is moving faster than the heavier frog. C) They both leave the ground with the same speed. D) The lighter frog goes higher than the heavier frog. E) The heavier frog goes higher than the lighter frog. F) Both frogs reach the same maximum height.
A parallel-plate capacitor is attached to a fixed voltage supply. If the plates are then separated to double the initial value, what happens to the energy stored by the capacitor?
a. It halves, go figure! b. It stays the same since the volume doubles while the electric field halves. c. It doubles since the volume between the plates doubles. d. It quadruples since both the volume and the field double in this case.
If the 5th-order fringe in Young's double-slit experiment occurs at an angle of 38.7°, what is the relationship between the wavelength ? and the distance between slits, d?
a. d = 3.12? b. d = 40.00? c. d = 8.00? d. d = 10.30? e. d = 0.12?
If you are lucky enough to get a chance to visit different planets of our Solar System, which of the following statements will be true?
A. Both your weight and mass will change. B. Both your weight and mass will remain the same. C. Your weight will change, but your mass will remain the same. D. Your mass will change, but your weight will remain the same.