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Question: Calculate the force a piano tuner applies to stretch a steel piano wire 8.90 mm, if the wire is originally 0.850 mm in diameter and 1.35 m long.
Please show all work and equations. Defend your answer.
A 270 kilogram log is pulled up a ramp by means of a rope that is parallel to the surface of the ramp. Determine what the tension in the rope
To pump 100Joules of heat from the ice cube tray of freezing water at 273K, out into a hot room at 310 K, the laws of thermodynamics say that you will need at least how many Joules of ordered energy or work.
A person travels by car from one city to another with different constant speeds between pairs of cities. Determine the average speed for the trip
A circular disk 0.3 in diameter, pivoted about a horizontal axis through its center , has a cord wrapped around its rim. what is the weight of the rod
On a calm, bright day, you're scuba diving in a deep lake (n = 1.35), 5.40 m away from your sailboat in the horizontal direction. Calculate the height of the mast
A propeller is modeled as five identical uniform rods extending radially from its axis. what is its rotational kinetic energy
Explain the scientific method and describe the overall manner in which you would apply it in your field of study or everyday life.
A heating element in a stove is designed to dissipate 2810 W of heat when it is connected to 200 V. Assuming that the resistance is constant, compute the current in this element if it is connected to 115 V. Compute the power the heating element dissi..
In order to find the density of an unknown material Susan measured the mass of a cube made out of this material and the length of its side
A current loop, carrying a current of 4.0 A, is in the shape of a right triangle with sides 30, 40, and 50 cm. Find the magnitude of the magnetic dipole moment of the loop
At (1,0) the voltage is 4.00V. At (3,0), the voltage is0.00V. If there is a steady, uniform electric field over this entire region, how much work is required to move an electron from the origin to (6,0)? (Coordinates are given in cm.)
A chair of weight 100 Newton lies atop a horizontal floor; the floor is not frictionless. Using Newton's laws, Find the magnitude of the normal force that the floor exerts on the chair
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