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Awire of length 18.0 m and cross-sectional area 6.00 x 10-6 m2 has a resistance of 3.75 R. What is the resistance of a wire of the same material as the first wire, but whose length is 30.0 rn, and whose area is 9.00 x 10-6 mz? Show your work.
A string is wound around a metal wheel that is free to spin on a frictionless pivot. A hanging mass is connected to the other end of the string. What is the initial velocity of the hanging mass
Two straight wires separated by a very small distance run parallel to each other, one carrying a current of 3.0A to the right and the other carrying a current of 4.1A to the left. Give the approximate value for the magnitude of the magnetic field a..
an object of mass b has a speed that changes with distance d according to v bx-n. what is the force as a function of
A converging lens (f1 = 26.0 cm) is placed 58.0 centimeter to the left of a diverging lens (f2 = -30.0 cm). Determine how far is the object from the converging lens
In a photoelectric effect experiment, no current flows unless thewavelength is less than 570nm. What is the work function of themetal?
A block of mass 2.50 kg is pushed 2.00 m along a frictionless horizontal table by a constant 16.0 N force directed 25.0° below the horizontal, Determine the work done by the force of gravity
The first part of the equation was to derive t= integral [1/sqrt((2/m)(E-U(x))] dx Part b is where I got stuck. Suppose U(x) = C/x for x>0.Calculate the time for a particle to move from x0 to 5x0 starting form rest at x0. Leave answer in terms of ..
if the tension in the string is increased by 1.4%, what will be the new fundamental frequency, if the original was 245 Hz?, and the length of the string is .76m
An arrow is fired from a castle tower at an angle of 40 degrees above horizontal, and with a speed of 62 m/s. What is the speed of the arrow as it hits the ork
a women a toddler pushes a chair at a constant speed with a force of 25.0n for a distance of 2.5m. how much work is the
When a car is traveling at 23 m/s on level ground, the stopping distance is found to be 20 m. What is the stopping distance now, as measured along the incline
An electron moving parallel to the x axis has an initial speed of 3.70x10^6 m/s at the origin. Calculate the potential difference between the origin and that point.
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