In what ways could a plant such as Kaiparowits be built with less environmental impact?
What will be an ideal response?
Some ways were suggested in the text. Having the staff live near the plant would
save considerable transportation costs. Strip mining to supply the plant could be done in a
less destructive, more environmentally friendly way. Attention could be paid to groundwater
and surface water degradation, particularly salinization. Students may well have other useful
ideas.
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A box is pushed across a rough horizontal floor by a force acting parallel to the floor in the direction of motion. A force doing negative work on the body is
A. friction. B. gravity. C. the applied force. D. the normal reaction force of the floor upward on the body. E. a fictitious force.
Why is Venus' rotation unusual?
What will be an ideal response?
How can thorium be used for nuclear energy when it is not fissionable?
A) Thorium can be used as a fuel for nuclear fusion reactors. B) Thorium has strong nuclear shielding properties, which enhances the chain reaction. C) Thorium can actually be fissioned with sufficient pressure and temperature. D) The thorium can easily be converted to U-233, which is fissionable.
A 0.75-kg sphere is released from rest and is moving 5.0 m/s after falling 2.0 m in a viscous medium. What is the change in mechanical energy caused by the force the viscous medium exerts on the sphere during this descent?
a. -6.1 J b. -4.6 J c. -5.3 J d. -6.8 J e. -2.7 J