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.

12 drag each label to the correct category. decide whether each statement describes mass or weight. measured in newtons measured in kilograms does not change when gravity changes === a gravitational force changes when gravity changes the amount of matter in something mass weight

If anyone who can me with this hw? i would really appreciate it

On a mild saturday morning while people are working inside, the furnace keeps the temperature inside the building at 23degreesc. at noon the furnace is turned off, and the people go home. the temperature outside is a constant 16degreesc for the rest of the afternoon. if the time constant for the building is 3 hr, when will the temperature inside the building reach 18degreesc? if some windows are left open and the time constant drops to 2 hr, when will the temperature inside reach 18degreesc?