If the second harmonic of a certain string is 42 Hz, what is the fundamental frequency of the string?

21 Hz

42 Hz

84 Hz

126 Hz

Biotic parts of an ecosystem interact with

Which substance will most likely dissociate when it is dissolved in water? A. NO2 B. N2F6 C. CaCl2 D. C6H12O6

A cart moving at 2.7 m/s travels for 2 minutes, How far did it go?

How can a small area in the middle of a desert provide an organism what it needs to survive?

Which statement about convection is correct? A. Convection occurs when a heated particle comes in contact with another particle, transferring heat. This transfer of heat can occur in solids, liquids, or gases. B.

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

How does surface roughness affect friction

Why does it hurt your hands when you carry heavy shopping in carrier bags?

Why did scientists choose carbon as a base for the atomic mass unit? Which isotope of carbon did they use?

What organelle is found in all animal cells and some plant cells