A skeeball has a mass of 0.5 kg. If the skeeball is rolling at 5 m/s, what is

the skeeball's kinetic energy? *

A) 2.5 J

B) 6.25 J

C) 12.5 J

D) 25 J

(B)

Astronomers want to make maps of the sky showing sources of X-rays or gamma rays. Explain why those X-rays and gamma rays must be observed from above Earth's atmosphere.

An individual is a fifty-year-old smoker that lives in a highly polluted city, gets no exercise, eats fast food every day, and has a family history of lung cancer. Which of the following is an uncontrollable risk factor?

When generators use mechanical energy, what type of energy is produced? kinetic energy electrical energy potential energy magnetic energy

A camcorder has a power rating of 13 watts. If the output voltage from its battery is 6 volts, what current does it use?

Explain the gradation in reactivity of halogen family

What current would it need to carry in order to experience a very modest 1.0*10-3n⋅m torque?

Which of the following is the most accurate statement concerning the properties of matter? a. they can be written as symbols b. they can be observed and measured c. they cannot be tested or verified d. they change with the amount of matter present

When two sound waves are added together, interference occurs. What type of interference occurs when the overall volume increases? A. Destructive interference B. Deductive interference C. Inductive interference D. Constructive interference

Based on the data table, find the acceleration and then predict the velocity at the time 3.5 seconds.

Explain velocity ratio. Explain and define the efficiency of a machine