A student in Italy flies to visit a family in New York. He hears the pilot report the weather on arrival as "clear and sunny with temperatures in the low 20's." He changes on the plane into shorts and a T-shirt. Explain his behavior.

the answer is false

explanation:

b. lifting dumbbell weight at 20-degree angle from the body after a 45-degree angle

answer: 2×10^-2kg

explanation: density= mass per volume

vol=mass/density

converting to s.i units we have;

3÷1000kg = 0.003

1.5÷100m = 0.15

0.003/0.15 = 0.02kg

molecules are free to separate from each other and will take on the shape of the container. molecules move completely at random and high speeds. they vibrate in a fixed position and do not move around much. molecules expand to the edge of their container.