If the velocity of a body changes from 13 m/s to 30 m/s while undergoing constant acceleration 2hats the average velocity of the body

Decide whether each statement below is True or False. Objects in motion tend to come to rest without forces acting upon them. Volume is a measure of inertia. Mass is the quantity of matter in an object.

Waves that collide with a barrier will reflect at an angle equal to the angle of incidence. True False

1. a substance with a pH of 3 2. a substance with a pH of 10 3. a substance with a pH of 7 4. an indicator 5. a scale that represents the concentration of H30+, 0-14 A.) phenolphthalein B.) base C.) pH scale D.) neutral E.) acid

What is the wavelength of 7.0-TeV protons? A) 550 nm B) 750 nm C) 5.4x10^-15 m D) 3.2x10^-18 m E) 1.8x10^-19 m

Which describes how the sodium ion is formed? A. Sodium loses an electron to become a positive ion. B. Sodium loses a proton to become a negative ion. C. Sodium gains an electron to become a positive ion. D.

Why do scientist use radioactive decay to figure out how old stuff is

The power of a machine measures A. its rate of doing work. B. its strength. C. the force it produces. D. the work it does.

the acceleration of gravity is 28 times on sun than earth. Imagine there is a space suit that let you stand on sun. Calculate the weight of 100 kg person on earth in newtons

A force of 20 n acts upon a 5 kg block, calculate acceleration of the object

What resultant force is needed to accelerate a train of mass 3.41000000 kg from rest to 15.0ms in exactly 20s