In the proton-proton chain, helium atoms are fused into hydrogen
Indicate whether the statement is true or false
FALSE
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_______________ are fossilized remains of colonies of single-celled organisms that built up layer after layer of trapped sediments
Fill in the blank(s) with correct word
Equilibrium: A load is being lifted vertically upwards by means of two cables attached to it. The first cable exerts a force of 600 N at an angle of 35.0° to the left of the vertical. The second cable exerts a force of 1300 N. At what angle to the right of the vertical is the second cable pulling?
A. 15.4° B. 16.2° C. 30.8° D. 67.8° E. 75.8°
The distance between Earth and the Moon
A. varies as the Moon orbits about Earth. B. remains constant as the Moon orbits about Earth.
The Tonga Trench in the Pacific Ocean is 36,000 feet deep. Assuming that sea water has an average density of 1.04 g/cm3,
calculate the absolute (total) pressure at the bottom of the trench in atmospheres. (1.00 in = 2.54 cm, 1.00 atm = 1.01 × 105 Pa) A) 1.1 × 103 atm B) 1.1 × 108 atm C) 1.1 × 105 atm D) 1.1 × 106 atm E) 2.1 atm