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A circular wine barrel 75 cm in diameter will burst if the netupward force exerted on the top of the barrel is 6490 N. A tube 0.8 cm indiameter extends into the barrel through a hole in the top, asindicated in the figure below. Initially, the barrel is filled tothe top and the tube is empty above that level. What weight ofwater must be poured into the tube in order to burst thebarrel? N
To verify her suspicion that a rock specimen is hollow, a geologist weighs the specimen in air and in water. What fraction of the specimen's apparent volume is solid
A laser beam is incident on two slits 0.100 mm apart and a screen is placed 4 m from the slits. An interference pattern appears on the screen. what is the wavelength of the laser light
An object attached to a horizontal spring is oscillating back and forth along a frictionless surface. The maximum speed of the objectis 1.25 m/s, and its maximum acceleration is 6.89 m/s2.
A series circuit contains only a resistor and an inductor. The voltage V of the generator is fixed. If R = 14 ? and L = 3.6 mH, find the frequency at which the current is one-half
Using a simply pulley/rope system, a crewman on an Arctic expedition is trying to lower a 5.52 kg crate to the bottom of a steep ravine of height 23.9 meters. At what speed will the crewman hit the bottom of the ravine
you and maria each own identical spaceships. As you fly past maria, you measure her ship to be 89 m long and your own ship to be 100 m long. How fast is Maria moving relative to you
A Styrofoam box has a surface area of 0.79 m2 and a wall thickness of 2.0 cm. The temperature of the inner surface is 5.0°C, obtain the thermal conductivity of the Styrofoam
A satellite is circling a small planet at a speed of 3.60 rev/day. If the satellite's orbit has a diameter of 30,000 km, how fast is the satellite moving
Trucks can be run on energy stored in a rotating flywheel, with an electric motor getting the flywheel up to its top speed of 611 rad/s. What is the kinetic energy of the flywheel after charging
q1. at one instant a bicyclist is 40.0 m due east of a parks flagpole going due south with a speed of 10.0 ms. then
An 86 Kg person stands on a uniform ladder 4m long, that weighs 70N. The floor is rough; hence, it exerts both a normal force, and a frictional force, on ladder. The wall, on the other hand, is frictionless; it exerts only the normal force. What a..
neptunium has a density of 19.5 . what would be the radius of a sphere made of this material that has a critical mass?
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