Before dna was discovered, in which materials did scientists think genetic matiral was stored

Two students are discussing the Sun. Which student is correct? Student 1: Nuclear fusion powers the Sun, so activity like sunspots and flares must be caused by a change in the fusion rate or the type of fusion.

What is the speed of a wave with a wavelength of 0.60 m and frequency of 240 Hz

What is the is the 94th element of the periodic table

A pot is heated on a stove. The water begins to boil rabidly. Which explains why the water is boiling fast?

When you catch a baseball is the energy gained or lost?

At the beach, describe where or when you would see wave fronts. How are wave fronts useful to surfers?

How would the moon appear from earth if the moon did not rotate?

Block B has mass 4.00 kg and sits at rest on a horizontal, frictionless surface. Block A has mass 2.00 kg and sits at rest on top of block B. The coefficient of static friction between the two blocks is 0.400.

T=2π√ (l/g) is dimensionally correct

A penny falls from a windowsill which is 25.0 m above the sidewalk. How much time does a passerby on the sidewalk below have to move out of the way before the penny hits the ground?