The average kinetic energy of the particles in a sample of matter is expressed as

Which of the following is not correct for an object in projectile motion on earth? a. the only force acting on the object is gravity. b. the shape of the object's path is a parabola. c. the object's acceleration never changes with time. d.

True or False - Could Usain Bolt be faster? True False

Most street lights are made from one or two elements mercury or sodium. Explain why astronomers preferred that cities you sodium streetlights instead of mercury streetlights

A canoe is floating downriver at a speed of 2.2 m/s. It has a momentum of 83.6 kg. m/s. What is the mass of the canoe?

For resonance to occur, the object must experience a frequency equal to its what? amplitude period wavelength natural frequency

A. Which skill related fitness component is your strongest and weakest?

A 100 N box is placed on an inclined plane that makes a 30° angle with the horizontal. Calculate the component of gravitational force that acts down the inclined plane. A. 25 N B. 50 N C. 87 N D. 100 N

Approximately how many kelvins are equal to 60 c? a. 289k b. 323k c. 333k d. 413k

What are two ways to change velocity?

What is the main optical element of a refracting telescope?