Oceans cover more of Earth's surface than land

Indicate whether the statement is true or false


TRUE

Physics & Space Science

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Polymers, such as epoxy, with cross-links are _____________polymers that do not soften when heated.

Fill in the blank(s) with the appropriate word(s).

Physics & Space Science

Compared to a 50-kg person, a 100-kg person at the beach requires

A) twice as much suntan lotion. B) the same amount of suntan lotion. C) less than twice as much suntan lotion.

Physics & Space Science

The howler monkey is the loudest land animal and, under some circumstances, can be heard up to a distance of 8.9 km. Assume the acoustic output of a howler to be uniform in all directions and that the threshold of hearing is 1.0 × 10-12 W/m2

A juvenile howler monkey has an acoustic output of 63 µW. What is the ratio of the acoustic intensity produced by the juvenile howler to the reference intensity I0, at a distance of 210 m? A) 110 B) 230 C) 76 D) 170 E) 300

Physics & Space Science

A 2.0-kg block slides down a frictionless incline from point A to point B. A force (magnitude P = 3.0 N) acts on the block between A and B, as shown. Points A and B are 2.0 m apart. If the kinetic energy of the block at A is 10 J, what is the kinetic energy of the block at B?



a.
27 J

b.
20 J

c.
24 J

d.
17 J

e.
37 J

Physics & Space Science