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What is the resistance of a thin tube filled by saline solution that is 2 cm in length and has a cross-sectional area of 1 x 10-5 m2? Suppose the resistivity of saline solution to be 0.1 m.
A 0.396-kg block is attached to a horizontal spring that is at its equilibrium length, and whose force constant is 18.5 N/m. The blockrests on a frictionless surface.
A ball and a thin plate are made from different materials and have the same initial temperature. The ball does not fit through a hole in the plate, At what temperature will the ball fall through the hole in each arrangement
An astronaut in space cannot use a scale or balance to weigh objects because there is no gravity. But she does have devices to measure distance and time accurately. What is the mass of this canister
A spherical balloon of volume 3.94 103 cm3 contains helium at a pressure of 1.15 105 Pa. How many moles of helium are in the balloon
an astronaut weighs 1000N on the surface of the earth(radius = 6.38*10^6m) what is the weight of the astronaut at the elevation of 620 km above the earth's surface
A constant force of 20 N is applied to an object of mass 7.5 kg at an angle of 22 degrees above the horizontal, What is the work done by the force on the object
A concave mirror is to form an image of the filament of a headlight lamp on a screen 8.00 m from the mirror, How far in front of the vertex of the mirror should the filament be placed
A tuning fork with a frequency of 288 Hz (D) is placed over anopen pipe which has one end submerged in water. If the temperatureof the air in the pipe is 22.0 Degree Celisus, how much of the pipehas to be out of the water in order to play the fundame..
A 21 kg suitcase is being pulled with constant speed by a handle that is at an angle of 30 degrees above the horizontal. What was the mass of the dog food
You are driving down the road when you see a deer in your headlights. It takes you 0.5 seconds to react. Once you react you start braking, and you decelerate at 3m/s2. What was your speed before you hit the brakes
A force of 150 N is applied to the edge of a disk. If the disk has a mass of 0.75 Kg with a radius of 0.50 m, how fast is its angular acceleration
An airplane is making a turn with a given radius in a circle. The lift force (given) is exerted perpendicular to the wings. What is the angle that the wings make with the horizontal
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