Why do sunspots appear darker than their surroundings?

Is the study of muscle movements in the human body an example of biology

An airplane starts at rest and accelerates down the run way for 20 s. at the end of the run way, its velocity 80 m/s north whats it acceleration?

If an airplane is flying at 300 km/h to the east and is facing a headwind of 18.0 km/h, what is the airplane's final velocity?

What is the acceleration of a 0.30-kg volleyball when a player uses a force of 42 N to spike the ball?

This device combines multiple circuits at one end of a connection into a single complex circuit on a single wire. The signal is then split into the individual connections on the other end.

In a polar covalent bond

Lindsay is late to class and is running down the hallway at a speed of 2 m/s the length of the hallway is 150 meters. How long will it take her to run down the hallway?

Which of the following is evidence that groundwater causes erosion and deposition?

Changing the direction of current will or will not affect the strength of an electromagnet

A swimming pool has the dimensions of 10 meters, 5 meters, and 1 meter. What is the pool's volume? 50 m 50 m3 50 m2 25 m3