What are external and internal defenses

Two spheres are placed so that their centers are 2.6 m apart. The force between the two spheres is 2.70 ✕ 10-12 N. What is the mass of each sphere if one sphere is twice the mass of the other sphere?

As a person coughs the CO^2 exits the lungs at speed of about 30m/s, what is the KE?

How can rice and flour mixture could be separated?

Explain the difference between a positive ion and a negative ion.

Given 0.02 of KF, how many liters of solution are needed to make a 7.2 solution?

When does a spring tide take place? At the beginning of spring Only during the spring season Only after spring is over At any time

The highest cloud are known as

What is the mass of 4.85 X 10^22 atoms of iron (Fe) ?

If element x has 95 protons how many electrons does it have

Which of the following when dissolved in deionized water would make a good conducting solution? a) methanolb) sugarc) baking soda