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An electric heater is rated at 1300 W, a toaster is rated at 1150W, and an electric grill is rated at 1530 W. The three appliancesare connected in parallel to a common 123 V circuit.
a. Find the current the heater draws.b. Find the current the toaster draws.c. For what current must the circuit breaker be rated for you tooperate all of these appliances at the same time?
In an advanced laboratory class a student performs the photoelectric experiment. Ultraviolet light is shone on a particular metal and the stopping potential is measured at the same time. What is Planck's constant based on this measurement
A 900N crate slides 12m down a ramp that makes an angle of 40 ? with the horizontal. how much thermal energy is created
The graph shows how the force component F cos along the displacement varies with the magnitude s of the displacement. Find the work done by theforce. (Hint: Recall how the area of a triangle is related tothe triangle's base and height.)
A spaceship takes a nonstop journey to a planet and returns in 100 hours according to a clock on the spaceship. how much time has elapsed the earth
The moon orbits the earth at a distance of 3.85 x 10^8 m. Assume that this distance is between the centers of the earth and the moon and that the mass of the earth is 5.98 x 10^24 kg. Find the period (in days) for the moon’s motion around the earth.
The train comes to a stop 6m from the point at which it was released. What is the magnitude of train's acceleration after its wheel begins to stick.
A rod of length l and mass m, pivoted at one end, is held by a spring at its midpoint and a spring at its far end, both pulling in opposite directions. The springs have spring constant k, and at equilibrium their pull is perpendicular to the rod. ..
A merry-go-round accelerates from rest to 0.71 in 21. calculate the net torque required to accelerate it
a beam of monochromatic light is incident on a single slit of width 0.620 mm. a diffraction pattern forms on a wall
An electron that has an energy of approximately 23 eV moves between rigid walls 1.8 nm apart. Find the precise energy of the electron
What is the ratio of the intensities of an earthquake P wave passing through the Earth and detected at two points 17km and 49km from the source, what is the ratio of the amplitudes
Consider a string with length 36 cm. The two ends are attached to the ceiling, separated by distance 30.0 cm. A 1 kg mass is attached to the string at distance 15 cm from the left end. Then the mass hangs suspended in Earth's gravity. (a) Determin..
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