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What are the three longest wavelengths for standing waves on a 300-cm-long string that is fixed at both ends (in meters)? If the frequency of the second-longest wavelength in part a is 45.0 Hz, what is the frequency of the third-longest wavelength (in Hz)?
Two long, parallel wires separated by 4.50 cm carry currents in opposite directions. The current in one wire is 1.20 A, and the current in the other is 3.45 A. Is the force attractive or repulsive
Find the x- and y-coordinates of the center of gravity of a 4.00 ft by 8.00 ft uniform sheet of plywood with the upper right quadrant removed as shown in the figure below. The dimensions of the cutout are a = 4.10 ft and b = 2.10 ft. HINTS: Think ..
q1. a man pulls a crate of mass 75.0 kg across a level floor. he pulls with a force of 180.0 n at an angle of 26.0deg
Two carts on a frictionless air track are made to travel toward each other. As they collide they stick together. if the cart on the left has a mass of 250 grams and is moving at 0.2 meters per second to the right.
a prospective cohort study is run to estimate the incidence of stroke in persons 55 years and older. all participants
A disk of mass M and radius R rotates around the z axis with angular velocity wI. What is the ratio of the initial to the final kinetic energies of the two-disk system
A 4.0 kg ball is located at x= 4.0m, y= 0m. A 6.0 kg ball is located at x= 2.0m, y= 4.0m, and a 3.0 kg ball s located at x= -1.0m, y= -2.0m. obtain the location of the center of the mass of this system
A 200g hockey puck is launched up a metal ramp that is inclined at a 30° angle. What speed does the puck have when it slides back down to its starting point
A 110 volt hair dryer has 2 settings: 850 watts and 1250 watts. Determine the resistance of the dryer for both settings
A 115 mCi radioactive tracer is made in a reactor. When delivered to a hospital 16 hours later its activity is 95 mCi. What is the tracer's half-life
Physics: Compression of column; constant of a spring, 1. A 4.8-m-tall, 30-cm-diameter concrete column supports a 5.0Ã?105 kg load. By how much is the column compressed?
A vibrator moves one end of a rope up and down to generate awave. The tension in the rope is 57N. The frequency is thendoubled. To what value must the tension be adjusted
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