You rub A plastic comb with wool. why will the comb then attract small bits of paper?

Select all that apply. Which statements are supported by the second law of thermodynamics? The usable energy in the universe is decreasing. The usable energy in the universe is increasing. The energy of the universe is being destroyed.

The Pony Express was a mail delivery system in the Old West that used a series of men on horseback to deliver mail from St. Joseph, MO to Sacramento, CA along a trail that was 2000 miles long.

Which of these experiments would make use of qualitative data?

In a physics lab, a 60-kg student runs up a 2.0-meter tall flight of stairs in 1.5 seconds. The student's power rating is approximately a. 20 b. 45 c. 80 d. 180 e. 200 f. 450 g. 800 h. 1800 w.

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

Who invented evolution?

A puppy weighing 3 kilograms races through the dog park. if she slows from a speed of 2 meters/second to 1 meter/second, what will happen to her kinetic energy? use the kinetic energy equation. a. her kinetic energy decreases to 1.5 j b.

Which type of material would be best to use for construction in an area prone to earthquakes? concrete brick wood stone

If a car is moving along the highway at a constant speed of 50 m/s, is there an unbalanced force acting on the car? How do you know? Explain using one of Newton's Laws.

If a sprinter has an average acceleration of 9.5 m/s2, how long does it take for the person to go from rest to 10 m/s