Which is a chemical change

Gabriel and arely have performed an experiment and are not sure their results are valid. what should they do to check their results

explain why when a ball is hit and it moves forward while spinning it may swerve to one side instead of moving straight

Compared to driving at 20 mph, about how much longer will it take for you to stop at 60 mph? a.) 2 to 3 times b.) 4 to 6 times c.) 8 to 10 times

A rock climber uses a pulley system to pull himself 10 m up a tricky part of a rock face. If the pulley system has a mechanical advantage of 3 and the climber weighs 786 N, what force does he use?

As you sit in front of a computer, which of the following is exerting the greatest gravitational force of attraction on you? A. Earth B. Your classmate across the room that you've had your eye on C. Your computer D. Your chair

What are 3 characteristics of a tornado?

Which list shows the element symbols of the 6 biological elements?

A space probe produces a radio signal pulse. If the pulse reaches Earth 12.3 seconds after it is emitted by the probe, what is the distance from the probe to Earth?

Do substances that heat up quickly have high or low specific heat capacity?

A substance has a specific heat of 0.870 J/g°C. It requires 2,000.0 joules to increase the temperature of 10.0 grams of the substance from its original temperature to its final temperature. By how many degrees did the substance increase? A 87.