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A 1.56m tall student stands before a vertical mirror. She can just see her whole body, from head to toe. How tall is the mirror
The image of a very distant car is located 25 cm behind a convex mirror. What is the radius of curvature of the mirror
The fundamental frequency of a pipe that is open at both ends is 598Hz. How long is this pipe
One of the 57.5cm -long strings of an ordinary guitar is tuned to produce the note B3(frequency 245 Hz) when vibrating in its fundamental mode. Find the speed of transverse waves on this string
A dog sitting 3.7m from a vertical mirror thinks its image is another dog. How far is the image from the dog
A drop of water on a countertop reflects light from a flower held 2.4 cm directly above it. The flower's diameter is 1.8 cm, What is the focal length of the water drop
Fish are hung on a spring scale to determine their mass (most fishermen feel no obligation to report the mass truthfully). How far apart are the half-kilogram marks on the scale
You are at a rock concert, and the sound intensity reaches levels as high as 100 dB. Calculate the amplitude of this oscillating force
A 10cm -diameter cylinder contains argon gas at 10 atm pressure and a temperature of 60?C . A piston can slide in and out of the cylinder. What is the final length of the cylinder
A pendulum clock has an aluminum pendulum exactly 1.0m long when the clock is calibrated perfectly. The temperature increases by 9?C. By how much is it off at the end of one day
a 20 kg cart that is to be rolled up a 5 meter long 2 meter high ramp. what would be its velocity when it reached the bottom
Two equally charged, 1.00 g spheres are placed with 2.00 cm between their centers. find the magnitude of the charge on each sphere
A 46.0-kg child takes a ride on a Ferris wheel that rotates four times each minute and has a diameter of 20.0 m. What is the centripetal acceleration of the child
An air puck of mass m1 = 0.15 kg is tied to a string and allowed to revolve in a circle of radius R = 1.1 m on a frictionless horizontal table. What is the horizontal force acting on the puck
the absolute portential at the exact center of a square is 3.0v when a charge of +Q is located at one of the squares corners. What is the absolute potential at the squares center
The internal energy of a gas is 1000j. The gas is compressed adiabatically and it's volume deceases by 400cm^3. What is internal energy of gas
A parallel plate capacitor is connected to a battery. The space between the plates is filled with air. Find the electric field inside the dielectric
The technique known as potassium-argon dating is used to date old lava flows and thus any fossilized skeletons found in them, What is the age of a piece of solidified lava with a 40Ar/40K ratio of 0.3
A quarter-pound hamburger with all the fixings has a mass 220g . The food energy of the hamburger is 2.4MJ. What is the energy equivalent of the mass of the hamburger
An unstable particle at rest breaks up into two fragments of unequal mass. The mass of the lighter fragment is equal to 2.80 multiply.gif 10-28 kg, determine the speed of the heavier fragment
6.63 mol of argon gas is admitted to an evacuated 158.85 cm3 container at 48.95oC. compute the final pressure
An astronaut travels from a distant star to the Earth at speed 0.992c. What is the distance from the star to the Earth as measured by an observer on the Earth
The length of a moving spaceship is 29.4 m according to an astronaut on the spaceship. compute the speed of the spaceship
When a rifle is fired, the person firing the rifle absorbs the recoil. Consider an Olympic biathlete firing a competition rifle. What is the magnitude of the force felt by the athlete
A large grinding wheel in the shape of a solid cylinder of radius 0.330 m is free to rotate on a frictionless, vertical axle. What is the mass of the wheel