You can determine the density of an object using mass and volume.
The answer is D: all electromagnetic waves can travel in a vacuum
Work = (force) x (distance)
Force = weight of the barbell = (mass) x (gravity) = (2.5 kg) x (9.8 m/s²)
Work = (2.5 x 9.8 newtons) x (3 meters) = 74 newton-meters = 74 joules.
It takes 74 joules to lift the 2.5-kg load 3 meters up off the floor.
After that, as long as the load is held motionless, no more work is done.
Answer: Most aerobic and strength training programs cause your muscles to contract and tighten. So stretching after you exercise helps optimize the range of motion about your joints and boosts circulation.
Hope this helps!
Answer:
Sometimes may cause involuntary responses like twitching
Explanation: