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 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
The distance between Earth and the Moon
A. varies as the Moon orbits about Earth. B. remains constant as the Moon orbits about Earth.