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A circuit component operates at 20 Volt and 0.50 Amp. A transformer with 300 turns in its primary coil is used to convert 120 Volt household electricity to the proper voltage,
(a) Find how many turns must the secondary coil have?
(b) Find how much current is in the primary coil?
A sample of the radioactive nuclide is prepared that has an initial activity of 7.28×1011 .92.4 after the sample is prepared, What is the half-life of this nuclide
a mass m neutron has elastic collision with a mass m' stillnucleus. How much kinetic energy does the neutron lose
A rope pulls a 100-kg skier up a frictionless slope inclined at300 to the horizontal. What is the work done by tension
A 4000 kg lunar lander is in orbit 50 km above the surface of the moon. How much work must the thrusters do
question an instructor uses light of wavelength 633 nm to create a diffraction pattern with a slit of width 0.117mm.
two concentric metallic shells conductors have radii r and 2r respectively. a charge q is placed on the inner shell and
A model rocket engine has an average thrust of 5.26 N. It has an initial mass of 25.0 g, which includes fuel mass of 12.3 g. What is the average exhaust speed of the engine
An iced tea glass is 15 cm tall and has a diameter of 8.0 cm. The glass sits on a garden table on a sunny day and is completely filled to the brim with water, What is the value of the angle
An FM radio transmitter has a power output of 130 kW and operates at a frequency of 93.5 MHz. How many photons per second does the transmitter emit?
question two cars are traveling on a desert road. after 5.0 s they are side by side at the next telephone pole. the
A 0.15-kg of aluminum contains 0.2 kg of water. Initially, the water and the cup have a com- mon temperature of 18 0C, find the specific heat capacity of the unknown material
A 2.0-cm wide diffraction grating has 1000 slits. It is illuminated by light of wavelength 530nm. What are the angles of the first two diffraction orders?
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