Suppose air resistance does not exist, roughly what would be the velocity of a 10 lb object 5-seconds into free fall off of a 500-m building? How is this answer 50 m/s?

Liquid water has surface tension, has a high specific heat, and functions effectively as a solvent for polar covalent and ionically bonded molecules. What feature of water imparts these properties?

How does sound travel through a medium? A. Sound does not move through a medium. B. Particles move in a circular motion. C. Particles vibrate parallel to the direction the sound travels. D.

Select the sentence that best describes why plastics and rubbers are good insulators. a. In order for a material to be a good insulator, the electrons must be able to move freely into and out of the atom.

Consider heat transfer between two identical hot solid bodies and their environments. The first solid is dropped in a large container filled with water, while the second one is allowed to cool naturally in the air.

To catch a ball, a baseball player extends her hand forward before Impact with the ball and then lets it ride backward in the direction of the ball's motion. Doing this reduces the force of impact on the player's hand principally because the a.

A cheetah can run at 30 m/s, but only for about 12s. How far will it run in that time

A car is traveling 80 km/h if the car's speed remains constant how far will it have traveled in 3 hours a. 3km b. 26.7km c. 80 km d. 240 km

True or False? Gases such as water vapor condense when they are * heated*.

If a chromosome on unfolds itself how is transcription enhanced

Two friends, barbara and neil, are out rollerblading. with respect to the ground, barbara is skating due south at a speed of 5.9 m/s. neil is in front of her. with respect to the ground, neil is skating due west at a speed of 1.4 m/s.