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Future space stations will create an artificial gravity by rotating. What rotation period will provide "normal" gravity
A 34.7 m long aluminum wire at a temperature of 24.3 oC has a radius of 0.295 mm. what is the resulting current in the wire
Two small plastic spheres, one charged to 18nC and the other to ? 18nC , are connected by a 30-mm-long insulating rod. What is the maximum possible torque on the dipole
Yellow-green light(wavelength 550nm) passes through two closely spaced very narrow slits, what is the wavelength for that second source of light.
Must show all work and calculations!!!! A primitive yo-yo is made by wrapping a string several times around a solid cylinder with m=200g and r=10cm. Find the tension in the string and the accelerati
when a 2.75kg fan having blades 18.5 cm long is turned off, its angular speed decreases uniformly from 10 rad to 6.3 rad/s in 5 sec. Through what angle does it turn
A lens of focal length +1.25 cm is used as a simple magnifier by holding outside the eye. what is the angular magnification
Bob can see the drai at the bottom center of a water filled pol (n=1.33) that is 3.6 m wide by light emerging 18 degrees above the horizontal
A 57.4 g sample of a conducting material is all that is available. The resistivity of the material is 1.05 E-7 and the density is 6.09 g/cm^3. What will the diameter of the wire be
An 800kHz radio signal is detected at a point 6.6 kmdistant from a transmitter tower. The electric field amplitude of the signal at that point is 780mV/m. What is the magnetic field amplitude of the
The current in a 100 watt lightbulb is 0.720A. The filament inside the bulb is 0.240mm in diameter. What is the electron current in the filament
A high-voltage transmission line with a resistance of 0.265 %u2126/km carries a current of 1.25 kA. What fraction of the transmitted power does this loss represent
A 34.7 m long aluminum wire at a temperature of 24.3 oC has a radius of 0.295 mm. determine the current in the wire
A child pulls on a wagon with a horizontal force of 75 N. If the wagon moves horizontally a total of 42 m in 3.4.0 min, what is the average power generated by the child
a long solenoid has 500 turns. a current of 2 A is passed through it, the resulting magnetic flux linked with each turn of a solenoid is 4x1/1000wb
A 0.25 kg harmonic oscillator has a total oscillation energy of 9.9 J. If the oscillation amplitude is 20.0 cm, what is the oscillation frequency
A 8.00-kg block of ice, released from rest at the top of a 1.32-m -long frictionless ramp, slides downhill, reaching a speed of 2.76m/s at the bottom. What is the angle between the ramp and the hori
A two mmeter high tank is full of water. A hole appears at its middle. What is speed of efflux
a block is moving down a hill at rest with height of h then it go on a loop, with r=0.5, if the block can comeplete this loop. What is the least height of the hill
Assume a load resistor RLoad is placed in parallel with a 12 volt battery, calculate the internal resistance of the battery
A solid wire 2.1mm in diameter carries a 10.0 A current with uniform curent density. Use Ampere's Law to determine the magnetic field strength
Copper wire 0.4 mm in diameter is tightly wounded into a long solenoid and a 3.6A current passes through it. What is the magnetic field in the solenoid
Two point charges lie along the y-axis. A charge of q1 = -9.5 %u03BCC is at y = 6.0 m, Locate the point (other than infinity) at which the total electric field is zero
Consider a parallel-plate capacitor with an area of 1.1 cm2, At what voltage will this capacitor exhibit dielectric breakdown
The intensity of sound wave A is 100 times that of sound wave B. Relative to wave B, find the sound level of wave A