Suppose a logs mass was 5kg. After burning, the mass of the ash is 1 kg. Explain what may have happened to the other 4kg?

Most papers do not reflect light very well because its surface is somewhat rough. State True or False.

The absorption of ink by blotting paper involves?

What are two processes that use oxygen

If an object has a volume of 5 mL and a mass of 50 g what is the density of the object

Volcanic eruptions are caused primarily by the movement of 1 rock by erosion 2 Earth in its orbit 3 tectonic plates 4 planetary winds

A weather balloon is inflated to a volume of 2.2 x 10^3 L with 374 g of helium. What is the density of helium in grams per liter?

What is the result of a mutation during replication A: the strands are different B: the strands are identical c: the strands are broken D: the strands are continuous

What is ___ heating of a liquid__ gas to liquid

A gate in an irrigation canal is constructed in the form of a trapezoid 2 m wide at the bottom, 38 m wide at the top, and 2 m high. It is placed vertically in the canal so that the water just covers the gate.

A machine with a mechanical advantage of 10 is used to produce an output force of 250 newtons. What input force is applied to this machine