What is the turntable's angular velocity at t = 2.5 s? express your answer to two significant figures and include the appropriate units?

Define acid and base in terms of pH in a paragraph

The radio waves of a particular AM radio station vibrate 680,000 times per second. What is the wavelength of the wave?

A 235 kg motorcycle moves with a velocity of 7 m/s. What's it's kenetic energy?

If the earth were not tilted on its axis, what would you expect to happen? A) Days would be shorter than 24 hours. B) A year would be longer than 365 days. C) We would not have seasons like we do now. D) There would be no day and night, just days.

What is a benefit of fuel cell cars over standard cars?

A girl pulls on a 10-kg wagon with a constant horizontal force of 30 n. if there are no other horizontal forces, what is the wagon's acceleration in meters per second per second?

What is the gravitational force excerted on an object called?

Fluorine-21 has a half-life of approximately 5 seconds. What percentage of the original nuclei would remain after 20 seconds

How does friction affect the distance of an object?

Based on the law of conservation of energy, how can we reasonably improve a machine's ability to do work?