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Four 1.50 Volt cells are connected in series to a 13 ohms light bulb. If the resulting current is 0.47 Amp, find what is the internal resistance of each cell, assuming they are identical and ignoring the resistance of the wires?
A box that weighs 300 N is pulled across a level surface with a constant velocity. What is the normal force of the floor on the box
A 40-g object connected to a spring with a force constant of 30 N/m oscillates with an amplitude of 8 cm on a frictionless, horizontal surface. Find the total energy of the system
A 94 cm is pulled aside a small distance and released. After 120 oscillations the amplitude is one-half of its starting value. What is the value of the damping coefficient
a wooden shelter has walls constructed of wooden planks 1.00 cm thick. if the exterior temperature is -20.0degc and the
Young's Double Slit Experiment is performed with 589 nm light and a distance of 2.00 m between the slits and the screen. The fifth interference minimum is observed 7.50 mm from the central maximum. Resolve the spacing of the slits.
a cello string vibrates in its fundamental mode with a frequency of 267 vibrations per second. the vibrating segment is
A stick of mass M and length L is initially upright on a frictionless table (balanced on one of its ends). The stick starts to fall. Discover an equation for the velocity of the center of mass as a function of the angle \theta.
The planes of atoms in a cubic crystal lie parallel to the surface, 0.87 nm apart. X rays having wavelength 0.41 nm are directed at an angle θ to the surface. For how many values of θ will there be a strong reflection? What is the largest value of θ ..
A 0.316-m-thick sheet of ice covers a lake. The airtemperature at the ice surface is -17.5 °C. Calculate the number of millimeters by whichthe ice thickens
The velocity v of waves on a vibrating string depends on the tension T in the string and the mass per unit length λ of the string. Derive an expression for v by using the dimensional analysis method
A charge of 0.040C moves vertically in a field of 0.075T that is oriented 45? from the vertical. What speed must the charge have such that the force acting on it is 8.0N
a piston with a radius of 10 cm and a mass of 50 kg presses down on water inside a cylinder. the atmospheric pressure
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