Constant Acceleration Kinematics: If a car accelerates at a uniform 4.0 m/s2, how long will it take to reach a speed of 80 km/hr, starting from rest?
Fill in the blank(s) with the appropriate word(s).
5.6 s
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As a white dwarf ages, its position on a standard H-R diagram will move ____
a. upward and to the right b. upward and to the left c. downward and to the right d. straight downward e. downward and to the left
A mass is suspended vertically from a spring so it is at rest at the equilibrium position. The mass is pulled straight down to an extension x and released so that it oscillates about the equilibrium position. The acceleration of the mass is zero when the mass is
A. at its maximum upward travel. B. at the equilibrium point. C. at its maximum lower travel. D. somewhere between the equilibrium point and maximum extension.
Which distance measurement technique is best suited to measuring objects at a distance of 10 light-years?
What will be an ideal response?
What speed is required for a length to contract to 80% of its proper length?
A. 0.80 c B. 0.60 c C. 0.40 c D. 0.20 c E. 0.50