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Three forces in the x-y plane act on a 7.20 kg mass: 13.10 N directed at 503.0o, 11.80 N directed at 130.0o, and 10.40 N directed at 224.0o. All angles are measured from the positive x-axis, with positive angles in the counter-clockwise direction. Calculate the magnitude of the acceleration.
Write down an energy transformation equation
Andy (mass 77kg ) uses a 2.7m -long rope to pull Bob (mass 61kg ) across the floor (μk=0.20) at a constant speed of 1.0m/s. What is the mass of the rope
An electron with an initial speed of 4.00×105m/sis brought to rest by an electric field, What was the initial kinetic energy of the electron, in electron volts
A 2 meter wire carrying 1 A of current is at a 90 degree angle to a magnetic field. If the current feels a force of 1 N from the magnetic field, what is the strength of the field
A prospector finds a solid rock composed of granite (? = 2650 kg/m3) and gold. What percentage of the rock is gold by volume
A small metallic bob is suspended from the ceiling by a thread of negligible mass. The ball is after that set in motion in a horizontal circle so that thread describes a cone. Compute the magnitude of the angular momentum of the bob about a vertic..
A double slit illuminated with two different colors of wavelengths 694 and 425 forms a two-colored diffraction pattern on a screen located away. What order maximum for occurs near from zeroth order
Two identical objects each hold a net charge of q = 9e. If the gravitational force between the two objects exactly cancels the electrostatic force between the objects, what is the mass of each object
A molecule of DNA (deoxyribonucleic acid) is 2.07 µm long. The ends of the molecule become singly ionized: negative on one end, Determine the effective spring constant of the molecule
The temperature inside a house is 25 degree C while the temperature outside is 10 degree C. Approximately how much energy is radiated per second
For lead 82Pb206 (atomic mass = 205.974440 u) obtain the mass defect in atomic mass units
A ball is thrown horizontally from the top of a 20-m high hill. It strikes the ground at an angle of 45 degrees. With what speed was it thrown
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