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A centrifuge whose maximum rotation rate is 11,000 rev/min can be brought to rest in 3.00 s. What is the average angular acceleration of the centrifuge
After a plant or animal dies, its 14C content decreases with a half-life of 5730 years. what is the age of the ancient site
If the coils of a heater have a resistance of 6 Omgea when hot, what current does the heater require
A 8 Omega resistor is connected to a 16 V battery. What is the current through the battery
A "75 Watt" light bulb uses an average power of 75 W when connected to an rms voltage of 120V. what is the maximum current in the light bulb
A lens of focal length 10cm produces a real image with magnification of 2. Find the object and image distances and characterize the image
An arrow is shot off the top of a bridge of unknown height. The speed of the arrow at launch is known to be 30.0 m/s. How tall is the bridge
A person swimming 0.80 m below the surface of the water in a swimming pool looks at the diving board that is directly overhead, What is the actual height of the diving board
suppose we measure the resistance from one hand to the other and find it to be 2 kilo ohms. What is the resistivity of skin
Two long parallel wires are 6cm apart and carry currents of 3 and 9amps resepctively in opposite directions
Two pendulums are allowed to rotate frictionlessly and without air resistance around the same point of rotation, Where do the masses collide
A 0.080 T magnetic field is perpendicular to a circular loop of wire with 100 turns and radius 30cm. what is the magnitude of the induced emf
consider the earth/atmosphere/ionosphere as an equivalent RC circuit with a total resistance of 230 ohm and a total capacitance of 2.9F. how long does this amount of discharge take in hours
You have a converging lens of focal length 20 -cm. For what range of object distances will the image be real
You run a microwave for 6 minutes together with a 1500 W boom-box and a 2800 W space heater. What is the power of your microwave
A turntable is a uniform disc of mass 1.2 kg and radius1.3 *10^-1 m . The turntable is spinning at a constant rate of f0 = 0.5 Hz. What is the magnitude of the frictional torque
Tarzan, King of the Jungle (mass = 70.4 kg), grabs a vine hanging from a tree branch. He is 4.80m off the ground when he grabs the vine. How high will Tarzan and Jane swing
Light of wavelength 563 nm incident on a pair of slits produces an interference pattern on a distant screen in which the separation between adjacent bright fringes at the center of the pattern is 0.
An 840 kg car needs to round a level curve with a radius of 23m.The driver wants to proceed at 56 kph. How much work does the friction force do on the car
If you hold a 400 cm^2 square plane mirror 43cm from your eyes and can just see the full length of an 8.1m falgpole behind you
A circular bird feeder 20 cm in radius has rotational inertia 0.12kg*m^2 . The feeder is suspended by a thin wire and is spinning slowly at 5.4 rpm. What is the rotation rate after the bird lands
The density of a pail of water is 10.0g/cm. An object has sunk to the bottom of the pail. What is the density of the object
A uniform, spherical cloud of interstellar gas has mass 2.0Ã-1030 kg and radius 9.0Ã-1012 m, what will be the star's rotation period
A box of 350N weight is at rest at the bottom of the plank that is 6.0m long and rises 30 degree above the ground. what is the velocity of the box at the top of the plank
A paperweight consists of a 9.00-cm thick plastic cube. Within the plastic a thin sheet of paper is embedded, what is the index of refraction of the plastic