The mat of a trampoline is held by 32 springs, each having a spring constant of 5 000 N/m. A person with a mass of 40.0 kg jumps from a platform 1.93 m high onto the trampoline. Determine the stretch of each of the springs
9.97 cm
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In cold-forming of plastics, the green compact is ___________to produce the final product.
Fill in the blank(s) with the appropriate word(s).
When light goes through two or more separated lenses,
a. the image distance of the first lens (the one nearest the object) will be positive. b. the final image can be inverted. c. the image distance of the first lens will be the object distance for the second lens. d. the object distance for the second lens will be negative.
The internal energy of a material does not depend upon which of the following?
(a) Energy of defects in the material (b) Kinetic energy of the vibrating atoms (c) Bond energy between atoms (d) Net energy resulting from a history of heating and cooling
How will the Sun end its life?
A) as a white dwarf B) as a white dwarf supernova C) as a massive star supernova D) as a neutron star or black hole