Time measurements from a stopwatch are not precise. Why not?

Objects fall at constant velocity

What times are the moon phases visible? My science teacher said that the phases of the moon are only visible at sertant times of the day. Did i hear him right?

The presence of which gas makes the planets Uranus and Neptune appear blue? a. helium b. hydrogen c. methane d. nitrogen

The tire above has a recommended tire pressure of 35 PSI, however, its current pressure is only 26 PSI. Which of the following could occur if driven on? (A) A tire blowout. (B) Unstable handling of the vehicle. (C) Both A & B.

Is it possible to travel faster than the speed of light?

If we know the force, the distance, and the time we can calculate A. only power. B. work and power. C. only work. D. neither work or power.

The different phases of matter exist at different levels of particle organization. Which if the following lists phase in order from least organized to most organized

What is wrong with the following statement: When you exert a force on a baseball, the equal and opposite force on the ball balances the original force and therefore, the ball will not accelerate in any direction.

Michal has a T-shirt that glows in the dark he holds his T-shirt up to light source and then turns off the light his T-shirt continues to glow. Explain this phenomenon?

Which of these objects would be most likely to create this sound wave