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An oil droplet with 10.0 excess electrons is observed between two parallel electrodes spaced 12.0 mm apart. The droplet hangs motionless if the upper electrode is 25.0 V more positive than the lower electrode. The density of the oil is 860 kg/m^3. What is the radius of the droplet. Please show your work and include units.
The equation of mothionof a SHM oscillator is x= (.50m) sin(2pi f)t, where x is in meters and t is in seconds. what is the frequency of the oscillator?
Assume the car is moving at 72 km/hr when the brake pedal is applied. Assume that the radius of the wheel is 15 cm. What is the maximum power.
A projectile is launched from level ground. When it lands, its direction of motion has rotated clockwise by 60 degrees. What was the launch angle.
A gunman standing on a sloping ground fires up the slope. The initial speed of the bullet is v0= 390 m/s. Find the maximum rangeof the bullet along the slope
A charged oil droplet falls 5.0 mm in 20.0 s at terminal speed in the absence of an electric field. What are the mass and radius of the drop
The vector is 3.5 long and is directed into this page. Vector points from the lower-right corner of this page to the upper-left corner of this page and has components -19.5, 25.
A 120 granite cube slides down a 45 frictionless ramp. At the bottom, just as it exits onto a horizontal table, it collides with a 210 steel cube at rest.
A box is put on a slide to move it from one part of a factory to another the slide is at an angle of 20 degrees below the horizontal the coefficient of friction between the box and slide is 0.352 what is the acceleration of the box.
The magnetic field inside an air filled solenoid 36cm long and 2cm in diameter is 0.8T. Approximately how much energy is stored in this field
A stunt man whose mass is 70 kg swings from the end of a 4.40-m long rope along the arc of a vertical circle. Assuming that he starts from rest as rope is horizontal, find out the tensions in the rope that are required to make him follow his circu..
Suppose you have a tube 1.20 m long, open on both ends. Determine the frequency of the 2nd overtone, assuming the speed of sound to be 343 m/s. Repeat for the same length tube but with a closed end.
Suppose you are myopic (nearsighted). You can clearly focus on objects that are as far away as 50.2 cm away. What would be the refractive power (in diopters - do not enter units) for your prescription
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