Why is friction important for a gymnast working on a set of parallel bars?

Which one of these are non-contact forces friction gravity normal force pushing force

How old does an individual need to be in the United states to purchase any tobacco products

Calories Used While Swimming for 30 Minutes Type of Stroke 56-kg woman 77-kg man Backstroke 95 130 Breaststroke 91 125 Fast Crawl 87 120 Slow Crawl 95 130 Sidestroke 68 90 Treading Water 35 48 Table 2-1 A 77-kg male looking to burn 120 calories for

A 242-g block is pressed against a spring of force constant 1.62 kN/m until the block compresses the spring 10.0 cm. The spring rests at the bottom of a ramp inclined at 60.0° to the horizontal.

Given current spacecraft technology, which of the objects in the table do you think it would be possible for you to travel to in your life-time?

PV = nRT, is the a. equation of state of an ideal gas b. theorem of equipartition of energy c. second law of thermodynamics

Which conducting electricity has the most harmful effects?

Which is the farthest known planet from the sun? a. Jupiter b. Saturn c. Uranus d. Neptune

Laser light of wavelength 470 nm shines on a pair of slits at normal incidence, producing a pattern of maxima on a large screen 92.0 cm away from the slits. The second order maximum is observed to be 31.7 cm away from the central maximum. a.

What does the slope of a line of best fit represent