Given that 1.00 in. = 2.54 cm, how many square centimeters are in 1.00 square inch?
A) 1.59
B) 2.54
C) 5.08
D) 6.45
D
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Two very long parallel wires in the xy-plane, a distance 2a apart, are parallel to the y-axis and carry equal currents I as shown in the figure
The +z direction points perpendicular to the xy-plane in a right-handed coordinate system. If both currents flow in the +y direction, which one of the graphs shown in the figure below best represents the z component of the net magnetic field, in the xy-plane, as a function of x? (Caution: These graphs are not magnetic field lines.) A) 1 B) 2 C) 3 D) 4 E) 5
The temperature scale that places zero at the point where all atomic and molecular motion ceases is
A) Fahrenheit. B) Celsius. C) Kelvin. D) centigrade. E) Ransom.
How do we know what goes on under the surface of the Sun?
A) We have X-ray images from satellites of the interior of the Sun. B) Astronomers create mathematical models that use the laws of physics, the Sun's observed composition and mass, and computers to predict internal conditions. C) We have sent probes below the surface of the Sun. D) By measuring Doppler shifts, we observe vibrations of the Sun's surface that are created deep within the Sun. E) both B and D
Why didn't the Big Bang produce many heavier elements than helium?
What will be an ideal response?