a value of pH 7.0 indicates A) a zero hydrogen-ion concentration B) the lowest hydrogen-ion concentration C) the highest hydrogen-ion concentration D) equal hydrogen and hydroxide-ion concentration

Beta particles cannot penetrate very far into solids because they: 1. have low velocity 2. have negligible mass 3. have no mass 4. have no mass are confined to orbits

What is a change that will not affect the pressure in a container

Which two element are we know about from everyday use and how are they similar how are they different?

What are some examples of tools or objects that apply force?

In a parallel circuit, what effect will adding more resistors to the circuit have? A. The current will increase. B. The current will decrease. C. The current will decrease by a factor proportional to the number of resistors. D.

For resonance to occur, the object must experience a frequency equal to its what? amplitude period wavelength natural frequency

Rasheed runs a football 10 meters east, turns and runs the football 6 meters west. If his velocity during this run is found to be 3 meters/second, how long does this take Rasheed to complete this run?

What is the approximate weight of a 20-kg cannonball on the moon if the acceleration due to gravity is 1.6m/s^2

A man consumes 2245 kcal of food in one day, converting most of it to maintain body temperature. If he loses half this energy by evaporating water (through breathing and sweating), how many kilograms of water evaporate?

If an eagle and a bumblebee are traveling at 8km/hr which has more momentum?