The acceleration due to gravity is smaller on Mars than the Earth, so the Mars rovers that explore the surface are lighter on Mars than they are on Earth. If the rovers roll across a flat plain, then the force required to accelerate the rovers is
A. more than would be required on Earth.
B. less than would be required on Earth.
C. the same as would be required on Earth.
Answer: C
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Mass on a Spring: A 0.50-kg box is attached to an ideal spring of force constant (spring constant) 20 N/m on a horizontal, frictionless floor. The box oscillates in simple harmonic motion and has a speed of 1.5 m/s at the equilibrium position.(a) What is the amplitude of vibration?(b) At what distance from the equilibrium position are the kinetic energy and the potential energy the same?
What will be an ideal response?
A uniform linear charge density of 4.0 nC/m is distributed along the entire x axis. Consider a spherical (radius = 5.0 cm) surface centered on the origin. Determine the electric flux through this surface.
A. 68 N ? m2/C B. 62 N ? m2/C C. 45 N ? m2/C D. 79 N ? m2/C E. 23 N ? m2/C
What is the best place to stand to view a total solar eclipse?
prenumbra anywhere annular shadow umbra
Emission nebula appear red because they are associated with cool red giant stars
Indicate whether the statement is true or false