The light-gathering capacity of a telescope is dependent on the:

A: focal length

B: size of human iris

C: area of aperture

D: magnification

If the speedometer on a car indicates a constant speed can you be sure the car is not acclerating

Which of the following is not a unit of torque? O pound-foot 0 kilogram-newton Newton-meter O pound-inch

Scientists have utilized the Very Large Array in New Mexico to do ALL BUT ONE of the following. That is A) discover water on the planet Mercury. B) map the center of the Milky Way Galaxy. C) chart the surface features of the Moon.

If you take a ball of moist clay and throw it against the wall it will stick. However, if you take a handful of clean sand and throw it against the wall it will just fall to the floor. Explain these two behaviors.

A few weeks later, you attend a rock concert at which the band plays at 120dB. How many times more intense is the rock concert than the choir concert?

Which statement best describes the movement of particles when a wave travels through a medium? The particles are

What is the acceleration of all objects due to gravity? What does this mean?

Which is the correct formula for cellular respiration? a. 6 CO2 + 6 H2O + light energy → C6H12O6 + 6 O2 b. CO2 + H2O → C6H12O6 + O2 c. C6H12O6 + O2 → CO2 + H2O d. C6H12O6 + 6 O2 → 6 CO2 + 6 H2O + ATP energy

A tree is standing in the middle of a meadow. As you watch, the wind begins to blow and the tree bends. Which statement best explains how you could tell that a net force was acting on the tree? OA) The tree had momentum.

Consider two cars, a 700kg Porsche and a 600kg Honda Civic. The Porsche is speeding along at 40 m/s (mph) and the Civic is going half the speed at 20 m/s.