Select all of the guidelines for a bike helmet. A. helmet does not need have to be snug around the chin.
B. The helmet must fit you well.
C. The helmet should be approved by the American National Standards Institute (ANSI) or the Snell Memorial Foundation.
D. The helmet must have a rounded, smooth exterior with no snag points.

10 points! will mark brainiest! in a heat engine if 1,000 j of heat enters the system and the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2,000 j 1: write the equation2: list out your known variables 3: plug the numbers into the equations 4: solve 5: write your solution statement that includes initial energy and final energy added you so much!

If an electric circuit is not grounded it is best to reach out and touch it to provide the ground a.true or b.false

From the perspective of an employee that effective channeling of work related information and concerns