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A 17.7-kg object hangs in equilibrium at the end of a rope (taken as massless) while a wind pushes the object with a 64.3-N horizontal force. Find the tension in the rope and the rope's angle from the vertical. The acceleration due to gravity is 9.81 m/s2.
A person standing barefoot on the ground 20 m from the point of a lightning strike experiences an instantaneous potential difference of 300 V between his feet. how much current goes up one leg
A ball is thrown with an initial speed of 60.0 m/s at an angle of 30 degrees above the horizontal. What is the balls vertical displacement at the end of 4.00 seconds
an electron is accelerated by a synchrotron accelerator to an energy of 2gev. what is its velocity and what is the
Suppose one gallon of gasoline produces 1.1 108 J of energy, and this energy is sufficient to operate a car for 43 miles. how many miles would the car go on a single tablet
ice of mass 15.0 kg at 0.00deg c is placed in an ice chest. the ice chest has 2.30 cm thick walls of thermal
The light source for a double slit experiment has a wavelength of 590 nm. The slit separation is 0.12x10^-3. A screen is placed at a distance of L from the slits. Find the width of the central bright fringe
A pendulum consists of a mass m = 0.080 kg hanging from a flexible string of length L. The string is very thin, very light, and doesn't stretch much, Find the period of the same pendulum on the moon's surface
The temperature of a body is increased from -173 C to 357 C. What is the ratio of energies emitted by the body per second in these two cases
A respiration monitor has a flexible loop of copper wire, which wraps about the chest. what is the average current in the loop
When an immersion glass thermometer is used to measure the temperature of a liquid, the temperature reading will be affected by an error due to heat transfer between the liquid and the thermometer. Suppose you want to measure the temperature of 7 ..
A 30 cm spring is compressed to 2 cm. a force of 200 N was used to do this. How much potential energy is stored in the spring
You find an unlabeled box of fine needles, and want to determine how thick they are. A standard ruler won't do the job, since all you can tell is that each needle is less than a millimeter thick.
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