Answer: A
Explanation: Since particles in solids are more tightly bound together than the particles in gases, mechanical waves can propagate more quickly through solids. ... Since electromagnetic waves do not require a medium to pass through, they are faster in matter that has fewer particles.
Answer:
160kg m/s
Explanation:
momentum = mass * velocity
here given mass = 80 kg and velocity = 2m/s
so 80 * 2 = 160kg m/s
No, Alec has not.
The force due to gravity is the same on all objects, regardless of shape and size. The acceleration caused by this force is 9.81 m/s². So if there are two identical pieces of paper, both will experience an equal force of gravity.
The difference in the papers' flight paths is due to the greater air resistance that the flat paper experiences. If the same experiment were to be repeated in a vacuum chamber, both of the pieces of paper would fall at the same rate
I feel like my answer is wrong but I think it B) false or C) true