How do the numbers of protons and electrons in an atom affect its electrical charge

What happens when a sound wave passes from water into air

Which of the following causes air pollution inside the house? A Smoking cigarettes B Growing house plants C Opening shades to let sunlight in D Using fans to circulate air

A block of mass 3.5 kg slides down a frictionless inclined plane of length 6.4 m that makes an angle of 30 degrees with the horizontal. if the block is released from rest at the top of the incline, what is its speed at the bottom

A scuba diver measures an increase in pressure of around 105 Pa upon descending by 10 m, what is the change in force per square centimetre on the diver's body?

Earths curved surface results in uneven heating of the surface. This uneven heating results in in the formation of ...

Suppose all of the apples have a mass of 0.10 kg and one of the apples in the bowl (C) is 1.0 meter off the ground. If the apple (C) falls from the table, what is the maximum kinetic energy it can gain?

Where would a car traveling on a roller coaster have the most potential energy At the bottom It's always the same At the top Halfway to the top

Is a magnetic reversal a threat to life on Earth? Whay do you say?

What are the adaptions of the tundra

Based on the number of valence electrons, what is the correct formula when nitrogen bonds to hydrogen? A) NH2 B) NH3 C) NH4 D) N2H