Fernan L.

Left side of clothes line: Ft=20N and the angle it makes with the shirt is 18 degree. Right side of clothes line: Ft=22.7N and the angle it makes with the shirt is 33 degrees. The mass of the shirt... more

A student carefully makes the following observations listening for the resonance points from a tuning fork vibrating above an adjustable length closed air column: Temperature is 13.3 °C. 1st... more

An organ pipe open at one end and closed at the other is 30 cm long. If the temperature in the church is 30 °C, what is the fundamental frequency and the first overtone of the pipe?

The sound of a starting pistol can be heard easily from a distance of 800.0 m but the smoke can be seen much sooner than the sound is perceived. Why is the smoke seen before the sound is heard?... more

The average airspeed of a single-engine aircraft is 150 miles/hour. If the aircraft flew the same distance in 2 hours with the wind as it flew in 3 hours against the wind, what was the wind speed?... more

A box that weighs 5.00x10^2 N is sliding down a ramp at a constant speed. The angle the ramp makes with the horizontal is 25 degrees. What is the coefficient of friction between the box and the ramp?  more

this is a physics question 

What impulse, or change in momentum, did the ball experience? Also, find the constant force exerted by the player's foot on the ball if the two are in contact for 0.020s 

Two gliders, A(.55kg) and B(.35kg) are held together by a string which compresses a spring between the gliders. The masses are traveling at 0.5m/s. a match burns the string and mass B is seen to be... more

A cart with a mass of M is traveling at a velocity of V.   a) What happens to the cart's kinetic energy when the mass of the cart triples? b) What happens to the cart's kinetic energy when the... more