The work required to stretch a spring changes linearly with the amount of stretch
Indicate whether the statement is true or false
FALSE
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The largest voids may span 300 million light years across
Indicate whether the statement is true or false
An ohm is equal to which of these?
A. A Coulomb per second B. A volt C. A volt per ampere D. An ampere per second
Estimate the speed of a galaxy away from us if it is 10 billion light-years from us and if the Hubble constant is 22 km/s per million light-years. (c = 3.00 × 108 m/s, 1 ly = 9.461 × 1015 m, 1 y = 3.156 × 107 s)
A) 0.5c B) 0.1c C) 0.7c D) 0.9c E) 0.3c
A polar bear of mass 200. kg stands on an ice floe 100. cm thick. What is the minimum area of the floe that will just support the bear in saltwater of specific gravity 1.03? The specific gravity of ice is 0.98
What will be an ideal response?