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The G string on a violin has a fundamental frequency of 196Hz. It is 32.5 cm long and has a massof 0.500 g. While this string is sounding, a nearby violinisteffectively shortens (by sliding her finger down the sting) the Gstring on her identical violin until a beat frequency of3.00 Hz is heard between the twostrings. When this occurs, what is the effective length of her string?
cm
If a star has a peak emission in the infrared par of the spectrum, is it hotter or cooler than the Sun? What color would the star be
A proton is accelerated from rest across a potential difference of 4V. What is the power delivered to the proton by the magnetic field
Green light (? = 546 nm) strikes a single slit at normal incidence. What width slit will produce a central maximum
Suppose a satellite is in a circular orbit 5.175 Earth radii above the surface of the Earth, By how much does it have to increase its speed
Consider a cell phone that emits electromagnetic radiation with a frequency of 1.0 GHz and with a power of 70 W. find the electric field amplitude at your ear as you use the phone
A 83.0 kg fullback is running at 3.86 m/s to the east and is stopped in 0.760 s by a head-on tackle by a tackler running due west. Calculate the impulse exerted on the fullback.
When a resistor is connected across the terminals of an ac generator (104 V) that has a fixed frequency, there is a current of 0.545 A in the resistor. determine the impedance of the series combination
A spider hangs from a strand of silk whose radius is5.8x10-6 m. The density of the silk is 1100kg/m3. When the spider moves, waves travel along the strand of silk at a speed of 310 m/s. Determine the mass of the spider.
A bumper car with mass m1 = 116 kg is moving to the right with a velocity of v1 = 5 m/s. A second bumper car with mass m2 = 96 kg is moving to the left with a velocity of v2 = -3.8 m/s. The two cars have an elastic collision. Suppose the surface is f..
A circular coil enclosing an area of 160 cm2 is made of 190 turns of copper wire. what is the average current in the coil during that time
A teeter-totter is made of a 5.400 m long plank with a mass of 58.0 kg, with a fulcrum (pivot point) located 2.900 m from the right end. If a box with a mass of 94.0 kg is placed at the extreme right end of the plank, what mass must be placed at the ..
High voltage power lines are made of aluminum and often start with an electric potential of around half a million volts, How much potential is lost due to resistance in the lines as a function of length
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