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For a string stretched between two supports, two successive standing-wave frequencies are 505Hz and 630Hz . There are other standing-wave frequencies lower than 505Hz and higher than 630Hz.
If the speed of transverse waves on the string is 362m/s , what is the length of the string? Assume that the mass of the wire is small enough for its effect on the tension in the wire to be neglected.
If the parachutist comes to rest with constant acceleration over a distance of 0.610 m, what force does the ground exerts on her.
A professional boxer hits his opponent with a 1000 N (225 lb) horizontal blow that lasts for 0.15 s. Calculate the impulse imparted by his blow
You are to drive to an interview in another town, at a distance of 300 km on an expressway. The interview is at 11:15 a.m. You plan to drive at 100 km/h, so you leave at 8:00 a.m. to allow some extra time. You drive at that speed for the first 110..
A ball of mass 0.113 kg is dropped from a height of 1.92m above ground. The acceleration of gravity is 9.8m/s^2.Neglecting air resistance find the speed of the ball when it is at a height of 0.812 m above the ground. Answer in units of m/s.
A thin rectangular plate of uniform areal density ? = 2.90 kg/m2 has length of 34.0 cm and width of 24.0 cm. There is a circular hole of radius 6.00 cm with center at (x,y) = (11.00,10.00) cm in the plate. Calculate the mass of plate
Smaller mammals use proportionately more energy than larger mammals; that is, it takes more energy per gram to power a mouse than a human. A typical mouse has a mass of 20 g and, at rest, needs to consume 3.0 Cal each day for basic body processes.
find the final temperature when 1000 g of water at 20 celcius in a 125 g copper calorimeter is mixed with 50g of steam originally at 153 celcius.
A swimmer swims in still water at a speed of 5.90 m/s. He intends to swim directly across a river that has a downstream current of 3.17 m/s. What is the velocity relative to the bank
A certain commercial mass spectrometer is used to separate uranium ions of mass 3.92e-25 kg and charge 3.20e-19 C from related species. calculate the thermal energy produced in the cup
A rookie quarterback throws a football with an initial upward velocity component of 15.33 and a horizontal velocity component of 20.4. Overlook air resistance.
An access door in a ceiling is 0.91m square, has a mass of 11kg, what are the magnitudes of the forces on the catch and the hinge from the door
The rotor in a certain electric motor is a flat, rectangular coil with 88 turns of wire and dimensions 2.33 cm by 4.20 cm, What is the average power of the motor
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