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If you see the displayed waveform on an oscilloscope screen,given that voltage scale is 50 millivolt/division, and the timescale is 100 milliseconds/div: What is the frequency of this oscillation?
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
This hill slopes upward at a constant angle of 40 degree above the horizontal. The coefficient of static and kinetic friction between the hill and the rock are .75 and 0.20, respectively.
From the shore of a frozen lake, a QB throws a 2 kg football at a velocity of 20 m/s. How far does the person slide before they come to a stop
However, the current increases by just 0.11 A when R1 is removed, leaving R2 connected across the battery. Find (a) R1 and (b) R2.
A child slides down a slide with a 26° incline, and at the bottom her speed is precisely half what it would have been if the slide had been frictionless. Calculate the coefficient of kinetic friction between the slide and the child.
A 10 m long wire carrying a current of 22 A makes an angle of 37 degrees with the Earth's magnetic field of 0.51 mT. What is the magnetic force of the wire
Football players measure their acceleration by seeing how fast they can sprint 40 yards (37m). For an 76kg player, what is the average power output for this sprint
The plate separation of a charged capacitor is 0.0690 m. A proton and an electron are releasedfrom rest at the midpoint between the plates. Ignore the attractionbetween the two particles, and determine how far the proton hastraveled by the time the e..
A car of mass 1286.6 kg is moving at a speed of 67.6 mph when it misses a curve in the road and hits a bridge piling, how much average power (in watts) is expended in this interval
A 3 kg block is set into motion up an inclined plane of 30 degrees with an initial speed of 8 m/s. what is the frictional force exerted on the block
A radio station broadcasts with a power of 50,000 watts. Estimate the average intensity of the wave at a distance of 50 km from the radio transmitting antenna
What is the approximate energy required to raise the temperature of 9 L of air by 300 °C? The volume is held constant. (Assume air almost entirely consists of nitrogen, oxygen, and argon, and that it is initially at 273 K.
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