Which of the following statements is true of green grass?

A) It absorbs red light and reflects green light.
B) It absorbs red light and emits green light.
C) It transmits all colors of light except green.
D) It means the lawn is healthy.


A) It absorbs red light and reflects green light.

Physics & Space Science

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A sound source of 150 watts radiates sound uniformly in all directions. The intensity of the sound at a distance of 4.00 m is

A. 0.389
B. 0.403
C. 0.582
D. 0.746
E. 0.927

Physics & Space Science

When at home during a tornado warning, you should seek shelter in the ______________ of the building

Fill in the blank(s) with correct word

Physics & Space Science

The Moon, Mercury, and Mars do not have plate tectonics because

A) they have cooled so rapidly that they do not have enough internal convection to break up their thick crusts B) they have no oceans for subduction and seafloor spreading to occur in C) impacts have filled in the plate boundaries essentially turning the process off D) their crusts have dried up and thickened so the crust cannot be broken up into plates

Physics & Space Science

In beta decay, it is found that the energy of the emitted electrons varies and is always less than what is calculated on the basis of the parent and daughter nuclei. This is evidence for the existence of another particle called the

A) gluon. B) meson. C) neutrino. D) quark. E) positrons.

Physics & Space Science