Which of the following has a natural pH that is acidic?

rain

fresh water lakes

sea water

tap water

Rarefaction occurs only in a ___ wave. A: transverse B: longitudinal C: sympathetic D: forced

How can you reverse a physical change?

The Sun emits a lot of radiation. The different types of radiation are the electromagnetic spectrum. Which of the following wave types are part of the spectrum?

A compression wave of gas, liquid, or solid, that is detected by your ear.

1. How much force is required to accelerate a 2 kg mass at 3 m/s?

The act, process or state of the change in place or position oa a body with respect to time and relative to the observer is said to be : - 1. Rest 2. Stationary 3. Motion 4. None of the above

During a snowball fight two balls with masses of 0.4 kg and 0.6 kg, respectively, are thrown in such a manner that they meet head on and combine to form a single mass of 1 kg. the magnitude of intial velocity foreach is 15 m/s.

Which phases of matter do molecules have the lowest amount of energy?

How many Oxygen (O) atoms are in the following? H2O + CO2 4 3 2

How does surface roughness affect friction