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A galvanometer has an internal resistance of 30?and deflects full scale for a 60??A current. In order to make an ammeter read currents up to 40A, a resistor must be placed in parallel with the galvanometer. What is the magnitude of this resistor?
What is the true gravitational acceleration and the centrifugal acceleration and how much work does the girl do to set herself and the merry-go-round into motion?
An ideal monatomic gas expands isothermally from 0.500 m3 to 1.25 m3 at a constant temperature of 630 K, Find the thermal energy transfer Q
Consider a string with length 36 cm. The two ends are attached to the ceiling, separated by distance 30.0 cm. A 1 kg mass is attached to the string at distance 15 cm from the left end. Then the mass hangs suspended in Earth's gravity. (a) Determin..
A simple pendulum has a mass of 0.350 kg and a length of 7.00 m. It is displaced through an angle of 12.0° and then released. Solve this problem by using the simple harmonic motion model for the motion of the pendulum.
You are an engineer in charge of designing a new generation of elevators for a prospective upgrade to the empire state building. Before the state legislature votes on funding for the project.
Calculate the speed of a proton after it accelerates from rest through a potential difference of 160.
After being accelerated to a speed of 1.84×105, the particle enters a uniform magnetic field of strength 1.00 and travels in a circle of radius 35.0. The results of this experiment allow one to find.
An airplane with a wing span of L = 27m flies horizontally at a location where the vertical component of the Earth's magnetic field is B = 6.0 x10 -5 T.
determine the largest angle MAX that the crutch can have just before it begins to slip on the floor.
Although both stars probably formed from the same clump of gas, more massive one must have had its birth slowed so that it became a key -sequence star millions of years later than its less massive companion.
A person wearing a seat belt can withstand an acceleration of -310m/s squared. How thick should barriers be to carefully stop a car that hits a barrier at 120km/h.
A rotating space station is said to create "artificial gravity"-a loosely-defined term used for an acceleration that would be crudely similar to gravity, what angular velocity would produce an "artificial gravity" of 9.80 m/s2 at the rim
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