A train is going 30 m/s and speeds up to 80 m/s over a period of 30 seconds along with a set of train tracks. What is his acceleration during this time period along the track?

2. what process do mrna and trna work together to complete? (3 points)

Darrel conducted an experiment with the following procedure: fill two cups with ice water. place an uninflated balloon snuggly onto your left index finger. blow a little air into an identical balloon, and place it onto your right index finger. place both fingers into the cups of ice water. darrel noticed that his right finger felt warmer in the ice water than did his left finger. which of the following does the experiment show? a. air is a good radiator of heat. b. air is a good insulator of heat. c. air is a good conductor of heat. d. air is a good convector of heat.

How do you date a sample of rock that you suspect as being one of the earliest on earth