Recent content by dagitt

Homework Statement 1. A vertical tube with a tap at the base is filled with water, and a tuning fork vibrates over its mouth. As the water level is lowered in the tube, resonance is heard when the water level has dropped 20 cm, and again after 60 cm of distance exists from the water to the top...

Homework Statement A train moving toward a detector at 29 m/s blows a 295-Hz whistle. What frequency is detected on each of the following? (a) a stationary train (b) a train moving toward the first train at 21 m/sHomework Equations V = f * Wavelength (f = frequency, V = velocity in m/s) T =...

Homework Statement 1. A 10.5 m long conveyor belt, inclined at 30.0°, is used to transport bundles of newspapers from the mailroom up to the cargo bay to be loaded on to delivery trucks. Each newspaper has a mass of 1.0 kg, and there are 28 newspapers per bundle. Determine the power that the...

HELP finding FORCE OF FRICTION? 1. I'm pulling a 4.24kg block UP a ramp. 2. The normal force is 9.21 N. 3. The "motion" force as it is being pulled up the ramp at constant velocity is 3.5 N. What is the force of friction acting on the block?? Please help...I've pondered over this...

Homework Statement a) A race car has a mass of 718 kg. It starts from rest and travels 44.0 m in 3.0 s. The car is uniformly accelerated during the entire time. What net force is exerted on it? b) As a baseball is being caught, its speed goes from 31.0 m/s to 0.0 m/s in about 0.0050 s...

HELP w/ Kinematics Problems?? Homework Statement a) A baseball is thrown horizontally at 45m/s. The ball slows down at a rate of 5m/s^2. How long is the ball in the air before coming to rest? b) A pile driver drops from a height of 35m before landing on a piling. What is the speed of the...