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A vibrating string has a fundamental frequency of 224 Hz. The tension is then increased by a factor of2.4. What is the new value of the fundamental frequency?Hz
if a car stops suddenly you feel thrown forward. wed like to understand what happens to the passengers as a car stops.
The Bragg angle for a certain reflection from a powder specimen of copper is 47.75º at a temperature of 293 K and 46.60º at 1273 K. Find the coefficient of linear expansion of copper
A converging lens has a focal length of f = 43 cm for blue light and f = 53 cm for red light. An object is placed 140 cm in front of the lens and is illuminated with white light. How far apart are the two images
you are keeping pace with another runner at 6 minutes per mile but are 10 m behind her when she is 100m from the finish
What is lemmings kinetic energy
A 69-g firecracker is at rest at the origin when it explodes into three pieces. Find the velocity of the third piece
A camera's flash uses the energy stored in a 260?F capacitor charged to 190V . The current in the charging circuit is not to exceed 21mA, What's the resistance in the charging circuit
A spring whose stiffness is 1000 N/m has a relaxed length of 0.49 m. what is the change in the potential energy of the spring
A mechanic's socket rolls off a 1.5 m high bench with an initial horizontal speed of 0.80 m/s. How far from the edge of the bench does the socket hit the floor
Flywheels are large, massive wheels used to store energy. They can be spun up slowly, then the wheel's energy can be released quickly to accomplish a task that demands high power. How much torque does the flywheel exert on the machine
The GPS network consists of 24 satellites, each of which makes two orbits around the earth per day. Each satellite transmits a 50.0 W ( or even less) sinusoidal electromagnetic signal at two frequencies, What average intensity does a GPS receiver o..
A 100 W lightbulb is plugged into a standard 120 V outlet. How much does it cost per month (30 days) to leave the light turned on continuosly? Assume electrical energy costs 7.5/kWh. (Enter dollars with no unit) What is the resistance of the bulb? Wh..
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