Look at the divisions between 2 and 4. What level of precision does the stopwatch have based on the division marked on its face ?

Spend time observing or thinking about events that involve matter and energy. which events can you explain? which events can’t you explain?

Which of the following changes will result in a stronger electromagnet? a. using fewer coils of wire b. using a higher voltage c. using a shorter nail d. using a longer wire

Imagine you are standing in the antarctic during the southern hemisphere summer. the sky is clear and blue. there are no clouds in the sky. your shadow is cast on the icy ground. what is the color of the shadow?