Which statements about rainbows are true? Choose more than one answer. A. They are caused by light diffracting around water molecules

B. Red light and violet light refract at different angles

C. Sunlight slows down as it enters water droplets in the sky

D. They are a type of interference pattern

E. Sunlight passes through a substance that is denser than air

F. Refracted sunlight creates their arcs

An astronaut in space cannot use a scale or balance to weigh objects because there is no gravity. but she does have devices to measure distance and time accurately. she knows her own mass is 77.4 kg , but she is unsure of the mass of a large gas canister in the airless rocket. when this canister is approaching her at 3.50 m/s , she pushes against it, which slows it down to 1.30 m/s (but does not reverse it) and gives her a speed of 2.60 m/s . what is the mass of the canister?