What happens to the sound as frequency decreases? *

a. it gets higher pitched

b. it gets lower pitched

c. it gets louder

d. it gets quieter

What do positive ions tend to do

A girl with mass of 40 kg sits on a sled at rest with a man of 15 kg. What is the kinetic energy of the girl and sled together

Select all the following that describe velocity

Is Kepler's constant the same for moons orbiting a planet as it is for planets orbiting the sun? Why?

What 2 factors cause seasons on Earth?

A capacitor is storing energy of 3 Joules with a voltage of 50 volts across its terminals. A second identical capacitor of the same value is storing energy of 1 Joule. What is the voltage across the terminals of the second capacitor?

The monochromatic light diffracts on the two slits which are 0.1 mm apart (their size is negligible) and produces an interference pattern on the wall which is 3 m far from the apparatus.

Which of the following statement is true regarding the study of human development?

Which type of power plant uses energy directly from the sun to generate electricity? A. Wind B. Hydroelectric C. Radiant D. Coal

What is a scientific law? an explanation that clarifies scientific observations a hypothesis that proposes an answer to a question a statement that summarizes a pattern found in nature an observation that explains a hypothesis