Planet Roton has a mass of 4.0 × 10^23 kg and a radius of 2.0 × 10^6 m. With what speed should a space probe be launched from the surface of Roton so as to achieve a maximum distance of 3.0 × 10^6 m from the center of Roton?
a. 4.2 km/s
b. 3.9 km/s
c. 3.0 km/s
d. 3.4 km/s
e. 6.0 km/s
c
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Center of Mass: Consider the sun and its largest planet Jupiter. On the line joining them, how far from the center of the sun is their center mass? Is it within or outside the sun? (Jupiter-sun distance is 778 × 106 km, diameter of the sun is 1.4 × 106 km, the sun is 1000 times as massive as Jupiter)
What will be an ideal response?
The neutrino has
A) enormous rest mass, positive charge, and spin quantum number 1/2. B) negligible rest mass, negative charge, and spin quantum number 1. C) negligible rest mass, no charge, and spin quantum number 1/2. D) moderate rest mass, positive charge, and no spin.
Which of the following optical elements used alone can produce a real image of an object?
A. Negative lens B. Plane mirror C. Convex mirror D. Concave mirror E. Prism
The reason that you would use a ramp to carry a weight to the top of a platform, rather than lifting it up a ladder, is because the
a. force exerted would be less b. work done would be less c. power expended would be less d. gain in potential energy would be more