AThe proper pH range for a swimming pool is between 7.2 and 7.8. Most pools use two substances, Na2CO3and HCL, to maintain this range. How would you adjust the pH if you found it was 8.2? 6.9?

Why do you think football players are usually large in size?

How do the pressure variations with depth affect our ability to explore the ocean? What are some of the challenges of scuba diving?

The ability of a material to transfer heat of electrical current is called?

What will be the time period of simple pendulum at the center of earth

An insect sit's on the edge of a spinning record that has aradius of. 15m. The insect's speed is about. 5m/s when record isturning at 33 1/3 rpm. What is the insect's acceleration?

The lighted part of the moon appears to change shape when viewed from the Earth because Question 1 options: Of the shadow cast from the Earth on to the surface of the moon the sun goes out at different times of the month Justin Bieber was having a

Which of the following is least likely to result from seafloor spreading

Through how many volts of potential difference must an electron, initially at rest, be accelerated to achieve a wave length of 0.27nm? A) 4.6 V B) 0.046 V C) 0.27 V D) 4.6 MV E) 4.6 kV

A roller coaster track is a good example of the law of conservation of energy. Use this law to explain these facts about a roller coaster track. a. The largest hill for a roller coaster track is the first hill on the track.

Which statement about the spectrum of light that emerges from a prism is true? A. High-frequency colors bend more than low-frequency colors. B. High-frequency colors bend less than low-frequency colors. C.