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A water heater is operated by solar power. If the solarcollector has an area of 6.00 m2, and the intensitydelivered by sunlight is 550 W/m2, how long does it taketo increase the temperature of 1.00 m3 of water from20.0°C to 60.0°C?
a 200g mass lying on a frictionless table is attached to a horizontal spring with a spring constant of 400 N/m. what is the initial potential energy of the system
A series AC circuit contains a resistor, an inductor of 230 mH, a capacitor of 4.30 µF, and a source with ?Vmax = 240 V operating at 50.0 Hz. obtain the phase angle between the current and the source voltage
A 15.0N package of whole wheat flour is suddenly placed on the pan of a scale such as you find in grocery stores. If the pan has negligible weight, find the maximum distance the spring will be compressed
A ball is thrown horizontally from the top of a 60.0-m building and lands 100.0 m from the base of the building. Ignore air resistance. What must have been the initial horizontal component of the velocity
A girl makes a microscope with a 3.0 cm focal length objective and a 5.0 cm eyepiece. the microscope tube length is 10 cm. Find expected magnification of this microscope
A 5.00 gram bullet has a velocity of 300 m/s. It strikes a block of wood and penetrates to a distance of 2.00 cm. The average force of the block of wood on the bullet is
A researcher is trying to shoot a tranquilizer dart at a 1.8-m-tall rhino that is 150m away. What is the magnification of the telescope
Two bodies oscillate in SHM with the same amplitude (7.90 cm), Find the displacement of A when the displacement of B is 7.90 cm
Find the position of an object in front of a screen to obtain an image of size twice larger than its original size on the screen.
A 60.0kg skier traveling at 20.0m/s reaches the foot of a steady upward 20.0 degree incline and glides 35.0m along this slope before coming to rest. Calculate the fan's average angular acceleration
A mass of 0.5 kg is suspended from a spring, which stretches by 8 cm. At what frequehcy would you expect resonant behavior
a geologist is camped 8,000 m from a volcano as it erupts. how much time elapses before the geologist the sound from the eruption
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