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A student is using a resonance tube and determines that three resonances occur at distances of
L1 = 0.170 m,
L2 = 0.497 m,
and
L3 = 0.844 m
below the open end of the tube. The frequency of the tuning fork used is
5.12 102 Hz.
What is the average speed of sound from these data? (Enter your answer to three significant figures.) vavg = ____m/s
What is the total mass of the Earth’s atmosphere? (The radius of the Earth is 6.37 x 10 6 m, and atmospheric pressure at the surface is 1.013 x10 5 N/m2 ). Think about why we can use such a simple equation to find the mass of the Earth’s atmosphere? ..
The amplitude of a lightly damped oscillator decreases by 1.7% during each cycle. What percentage of the mechanical energy of the oscillator is lost
A hiker walks 3 km south, then 2 km west. What is the hiker's total displacement, using component method of addition
Two steel wires of the same length, one with radius r and the other with radius 3r, are connected together, end to end, and tied to a wall. How far does the point where the two wires meet move
The 5400m 1000-500mb thickness contour is often used as a proxy for the rain/snow line throughout much of the country. Calculate the mean virtual temperature of the layer for this thickness value.
a 25 meter length of wire carrying a current of 8a lies on a horizontal table with a rectangular top of dimensions
The voltage drop along a 30.0m segment of a power line made from copper wire (a very good conductor) is 1.2V, while carrying a current of 25.0 A. How large is the electric field along the wire
A uniform ladder whose length is 5.0 m and whose weight is 400 N leans against a frictionless vertical wall. The coefficient of static friction among the level ground and the foot of the ladder is 0.37.
A block of mass m [kg] slides from rest a distance d [m] down a frictionless incline at angle theta where it runs into a spring of spring constant k [N/m]. When the block momentarily stops, it has compressed the spring by x [cm].
A small ball is thrown horizontally out of a window 7.50 m above the ground. With what speed was it thrown
an 15.0-kg box is released on a 35.0 incline and accelerates down the incline at 0.290m/s^2, Find the friction force impeding its motion
A ball is thrown straight up from the ground with speed v 0 . At the same instant, a second ball is dropped from rest from a height H , Find the time at which the two balls collide
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