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A piece of wood that floats on water has a mass of 0.0175kg. A lead weight is tied to the wood and the apparent mass with the wood in air and the lead weight submerged in water is 0.0765kg. the apparent mass with both the wood and the lead weight submerged in water is 0.0452kg. what is the specific gravity of the wood?
A mass of 3kg, is sitting on a 34° incline and is connected by a massless string over a pulley in the shape of a hollow cylinder , what is the acceleration of the system
To appreciate the strength of gravity, calculate the number of steel cables that would be required in the absence of gravity to hold the moon in orbit about the earth.
questiona mass m 90 kg slides on a frictionless track that has a drop follow by a loop-the-loop with radius r 15.1 m
In a diffraction grating experiment, light of 600 nm wavelength produces a first-ordered maximum 0.35 mm from the central maximum on a distant screen. What is the wavelength of the light from the second source
A penny has a mass of 2.50 g, a diameter of 19.55 mm, find the density of the material from which the penny is made
A converging lens (f = 13.0 cm) is held 6.20 cm in front of a newspaper, the print size of which has a height of 2.20mm. Find (a) image distance (in cm) and (b) height (in mm) of the magnified print.
You need to produce a solenoid that has an inductance of 2.55 ?H . You construct the solenoid by uniformly winding 1.07 m of thin wire around a tube. How long, in centimeters, should the tube be
q1. a sled and rider with a combined weight of 68 kg are at rest on the top of a hill 28 m high. what is their total
A 3.40-kg object is attached to a spring and placed on frictionless, horizontal surface. Find the maximum acceleration of the object
Zach, whose mass is 71kg , is in an elevator descending at 13m/s . The elevator takes 5.0s to brake to a stop at the first floor. What is Zach's apparent weight while the elevator is braking
A uniform diving board, 12m long and 20kg mass is placed on a platform. How far can a 60kg person walk down the board from the edge of the platform without board tipping over.
You are arguing over a cell phone while trailing an unmarked police car by 25.0 m; both your car and the police car are traveling at 120 km/h. What is the separation between the two cars when your attention finally returns
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