The organisms Homo habilis, Homo erectus, and Homo sapiens
A) are part of the same genus
B) have nothing in common
C) are part of the same genus and species
D) are part of the same species
A
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What is the strength of the magnetic field at the center of a circular loop of wire of diameter 8.0 cm when a current of 2.0 A flows in the wire? (?0 = 4? × 10-7 T ? m/
A)
A 50.0-kg skier starting from rest travels 200 m down a hill that has a 20.0° slope and a uniform surface. When the skier reaches the bottom of the hill, her speed is 30.0 m/s
(a) How much work is done by friction as the skier comes down the hill? (b) What is the magnitude of the friction force if the skier travels directly down the hill? What will be an ideal response?
A superconducting wire carries a current of 1.0 × 104 A. Find the magnetic field at a distance of 1.0 m from the wire.
What will be an ideal response?
The greenhouse effect occurs on Earth because carbon dioxide is
a. transparent to visible light and opaque to infrared radiation. b. opaque to visible light and transparent to infrared radiation c. totally opaque to both visible light and infrared radiation d. totally opaque to both visible light and infrared radiation