A substance with a pH of 9 has

How are speed and velocity different? Velocity tells you how fast and gives a direction. Speed only tells how fast. Speed is a vector and velocity is a scalar. Speed tells you how fast and gives a direction. Velocity only tells how fast.

Which of the following is not a popular surface for a tennis court? A. wood B. grass C. clay D. Hard court

A strand of 10 lights is plugged into an outlet. How can you determine if the lights are connected in series or parallel? A) Unscrew one light. If the other lights stay on, it's a series circuit. B) Unplug the strand.

Classify each of the following as a physical change or a chemical change. a) grinding glass: b) rusting of iron: c) burning a candle: d) sanding wood:

Which microscope allows two samples to be viewed simultaneously

On which body would a 100kg man have the least gravitational potential energy when lifted to a height of 3 meters

Which of the following factors can negatively affect development? a. Political corruption and instability b. Lack of resources c. Lack of education d. All of the above

A golf ball is hit with an initial velocity of 155 ft/s at an angle of 23 degrees with the horizontal. After 1.4 seconds, how far has the golf ball traveled horizontally and vertically?. a. 199.7 feet horizontally and 75.2 feet vertically. b. 60.

What is the kinetic energy (in joules) of a. 2 kg softball thrown at a speed of 40 m/sec? (answer should be in correct units)

How is the information sent back to earth by the robots?