A student swings his keychain around in a circle. What is the source of the centripetal force for this action?

How accurate are tornado tools?

A wave traveling in water has a frequency of 500.0 Hz and a wavelength of 3.00 m. What is the speed of the wave?

Which of the following best describes a completely elastic collision? The kinetic energy (K) of the system before the collision equals K after. The potential energy (U) of the system before the collision equals U after.

January 1st 37°F January 7th 48°F January 14th 52°F January 18th 51°F January 21st 45°F January 25th 41°F January 31st 55°F When looking at a data set of numbers, the mean is the average. Look at the table above.

Dispositivo que muestra tanto la dirección como la magnitud de la corriente eléctrica.

A cyclist turns a corner with a radius of 37 m at a speed of 22 m/s. What's the cyclist acceleration? If the cyclist and cycle have a combined mass of 90 kg, what is the force causing them to turn?

A gas had a initial volume of 168 cm at a temperature of 255 k and a pressure of 1.6 atm the pressure of the gas decreased to 1.3 atm and the temperature of the gas increases to 285 k

A train travels 90 kilometers in 1 hours, and then 60 kilometers in 3 hours. What is its average speed

A man is shot out of a cannon towards the center of an 80 foot long catching net 200 feet away. Unfortunately, the person in charge of aiming the cannon did not consider the crosswind.

A 2.4-kg ball falling vertically hits the floor with a speed of 2.5 m/s and rebounds with a speed of 1.5 m/s. What is the magnitude of the impulse exerted on the ball by the floor