About how many moons are there in the solar system?

A. 25

B. 50

C. 75

D. 100

Which parts of a compound microscope magnify objects? a convex and a concave lens two convex lenses two concave lenses one concave and two convex lenses?

Which one of the following is a decomposition reaction? A. 2H2O (l) → 2H2 (g) + O2 (g) B. N2 (g) + 3H2 (g) → 2NH3 (g) C. CH4 (g) + 2O2 (g) → CO2 (g) + 2H2O (g) D. 2H2 (g) + O2 (g) → 2H2O (g)

The speed of sound in air is 331 m/s. what is the plane's speed in terms of the speed of sound?

Calculate the displacement of a mouse walking along a ruler, if it begins at the location x=5cm, and then walks yo x=12cm

Element x has five valence neutrons, element y has one valence electron and element z has one valence electron. which two of these elements are most likely to have similar properties

How does mass affect the speed of an object

Which of the following tools can be used to determine humidity? Select all that apply. Barometer Hygrometers Anemometer Hair Thermometer [can use more than one answer]

For a cars speedometer what is the calculated speed over an entire trip

How does gravity influence our annual calendar?

A 0.500 kg block is sitting on a horizontal, frictionless surface. The block is connected to a horizontal spring with a force constant of 124 N/m. The other end of the horizontal spring rests against a wall. When a 100.