Which of the following is an idea that robert hutchings goddard introduced in his "further developments" to his research "a method of reaching extreme altitudes"?

a. lunar energy

b. nuclear energy

c. solar energy

d. wave energy

A formula that shows the simplest whole-number ratio of the atoms in a compound is the

What are visible colors of light has the longest wavelength?

Explain the difference between speed and velocity and indicate if these are scalar or vector quantities

A car initially traveling at 21.4 m/s accelerates at a rate of 4.4 m/s2 for 7.5 seconds. What is the final velocity of the car?

A 6000 kg lorry is reversing into a parking space at a speed of 0.5 m/s but collides with a car. The crumple zone of the car stops the lorry in 1.5 seconds. What was the impact force?

Wave can be described as A. a continuous transmission of energy from one location to the next B. The disturbance of particles in an area C. The transmission of energy through individual particles D. The motion of particles in a medium

A germ is also called a microorganism or a microbe. True False

What is 1.33Ω plus 2Ω?

As a fire truck approached Mary, the pitch of the siren got higher. once the fire truck passed and moved away, the sirens pitch got lower. this change in pitch is because in the sound waves

Find the magnitude of the sum of these two vectors