Why does the burning of fossil fuels increase the greenhouse effect on Earth?
A) Burning depletes the amount of ozone, thereby warming the planet.
B) Burning fuel warms the planet.
C) Burning produces infrared light, which is then trapped by existing greenhouse gases.
D) Burning releases carbon dioxide into the atmosphere.
E) All of the above are true.
D
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Constant Acceleration Kinematics: A car starts from rest and accelerates at a steady 6.00 m/s2. How far does it travel in the first 3.00 s?
A. 9.00 m B. 18.0 m C. 27.0 m D. 36.0 m E. 54.0 m
A car with a radio antenna 1.0 m long travels at 80 km/h in a locality where the Earth's magnetic field is 5.0 × 10?5 T. What is the maximum possible emf induced in the antenna as a result of moving through the Earth's magnetic field?
What will be an ideal response?
Three flat layers of transparent material are stacked upon one another. The top layer has index of refraction n1, the middle n2, and the bottom one n3 . If n1 > n2 > n3, and a ray of light in air strikes the top layer, at which surface given can total internal reflection occur first?
a. the top surface b. the surface between materials with indices n1 and n2 c. the surface between materials with indices n2 and n3 d. Total internal reflection cannot occur at any of these surfaces.
The frequency of blue light is ________ that of green light.
A. less than B. greater than C. the same as D. greater than, the same as, or less than, depending on a source of light