If the frequency of a sound wave is 250 hertz and it's wavelength is 1.36 m, what is the waves velocity? A) 250 m/s B) 340 m/s C) 200 m/s D) 120 m/s

Which of the following does not accurately describe the forces that exist with an atom? A. Electrons positioned closer to the nucleus have a greater attraction to the protons and are more likely to be discharged from the atom than electrons farther

What is a physical change in matter?

Examples of Laws Of Motion Which law is best illustrated? Why? 1. Maya hits a curb while riding her bike. The bike stops moving, but Maya is thrown into the air for a split second. 2. A bird flaps its wings, using them to push air downward.

Car A has a mass of 1,200 kg and is traveling at a rate of 22 km/hr. Car B has a mass of 1,200 kg and is traveling in the same direction at 25 km/hr. Which of the following statements is true?

26. An ice-skater who weighs 200 N is gliding across the ice. If the force of friction is 4 N. what is the coefficient of kinetic friction?

What is the primary function of the small intestines

A nuclear power plant generates a total of 150mw of power and 45% of this power is wasted heat that is discharged on the cooling water of a river. the river flows at 660.43 gal/s and has an upstream temperature of 64.4 ⁰f.

The universe is believed to have been form from a very dense fireball billions of years ago.

What does the slope of the line on this velocity versus time graph represent? A. positive deceleration B. zero acceleration C. positive acceleration D. negative acceleration

Which of the following objects has the greatest kinetic energy? a baseball flying through the air at 90 miles per hour a baseball flying through the air at 45 miles per hour a baseball flying through the air at 20 miles per hour a baseball sitting