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When a battery is connected to a 100-? resistor, the current is 4.00 A. When the same battery is connected to a 442-? resistor, the current is 1.08 A. Find the emf supplied by the battery and the internal resistance of the battery. (When entering units, use ohm for ?.)
A hare and a tortoise compete in a race over a straight course 1.80 km long. The tortoise crawls at a speed of 0.190 m/s toward the finish line. How far is the tortoise from the finish line
A 10.00 kg grocery is pushed 12.0 m along an aisle by a shopper who exerts a constant horizontal force of 40.0 N. a.) What work is done on the cart? b.)If all frictional forces are neglected, and the cart starts form rest, what is the grocery cart..
The drawing shows the front and rear sprockets of a bicycle. Assume the chain does not slip or stretch. How much time is required to double the speed of the rear sprocket
a ramp consisting of a large piece of cardboard poster board or similar thin and smooth materiala toy car such as a
Illustrate what is the maximum load that can be hung from a copper wire of diameter 0.46 mm? Answer in units of N.
A current of 2.0 A is flowing along the z-axis in the positive z direction from the origin to z=-2 m. Find the magnetic field, Which field is the strongest and Why
A net force that is quadratically increasing in time is applied to an object. What is time dependence of the object's kinetic energy
An elderly sailor is shipwrecked on a desert island but manages to save his eyeglasses. How far apart are the lenses when the telescope is adjusted for minimum eyestrain
A tensile specimen has a 10mm minimum diameter and a 50mm guage lenght. The stress and strain follow a linear behaivour before the applied load reaches 8 x 10^4 N, what is the young modulus for this material
A ball whose mass is 1.3 kg is suspended from a spring whose stiffness is 3 N/m. Suppose this apparatus were taken to the Moon, where the strength of the gravitational field is only 1/6 of that on Earth. What would the period be on the Moon
The binding energy of a nucleus is 441.3 MeV. What is the mass defect of the nucleus in atomic mass units
How much work must be done on the electron to move it to negative plate if it is initially positioned 2.86 mm from the positive plate.
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