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Two blocks are connected by a wire that has a mass per unit length of 8.50 x 10-4 kg/m. One block has a mass of 19.0 kilogram, and the other has a mass of 42.0 kilogram. These blocks are being pulled across a horizontal frictionless floor by a horizontal force P that is applied to the less massive block. A transverse wave travels on the wire between the blocks with a speed of 532 m/s (relative to the wire). The mass of the wire is negligible compared to the mass of the blocks. Find what is the magnitude of horizontal force?
Resistivity measurements on the leaves of corn plants are a good way to assess stress and overall health. What is the resistivity of the leaf tissue
An 815-kg race car can drive around an unbanked turn at a maximum speed of 61 m/swithout slipping. The turn has a radius of curvature of150 m. Air flowing over the car's wing exerts a downward-pointing force (called the downforce) of2500 N on the ..
For safety in climbing, a mountaineer uses a nylon rope that is 50 m long and 1.0 cm in diameter. Find its Young's modulus
the leyden jar invented by chance in 1746 was one of the earliest types of capacitors see the figure below made by
q1. a person exerts a horizontal force of f 175 n in the test apparatus shown in the drawing. h 0.25 m. find the
In the bohr model of the hydrogen atom an electron (mass 9.1*10^-31kg) orbits a proton at a distance of 5.3*10^-11 m. The protonpulls on the electron with an electrical force of 8.2*10^-8 N. How many revolutions per second does the electron make?
q1. if the weight of a room full of water is so great why dont the first floors of houses built over basements all
Two particles of charge Q(-L,0) and nQ(αL,0) where n = 10. When a third charge is placed at the origin, it is found that the force on it is zero. Find out α.
A child swings a 0.38-kg ball in a circle on a string that is 1.3 m long. if the ball makes 1.2 rev/s, what is the magnitude of the ball's angular momentum? (Please provide calculations)
A spark plug in a car has electrodes separated by a gap of 6.5×10?2in. What potential difference must be applied to the spark plug to initiate a spark
A 450 lb boy pushes on a 300 lb box with a force of 125 lb. If the box slides across the floor with constant velocity, what is the net force on the box
A person's prescription for her new bifocal glasses calls for a refractive power of -0.461 diopters in the distance-vision part, & a power of +1.83 diopters in the close-vision part. Compute the near & far points of this person's uncorrected visio..
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