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Question: An ideal voltmeter V is connected to a 2.0-O resistor and a battery with emf 5.0 V and internal resistance 0.5 0. as shown in Fig.
(a) What is the current in the 2.0- O resistor?
(b) What is the terminal voltage of the battery?
(c) What is the reading on the voltmeter? Explain your answers.
A child pulls on a wagon handle at an angle 37° above the horizontal with a force of 45 N. what is the mass of the wagon
A supply plane needs to drop a package of food to scientists working on a glacier in Greenland. How far short of the target should it drop the package
the electric field midway between two equal but opposite point charges is 747 nc and the distance between the charges
question what is the fractional change in the resistance of an iron filament when its temperature changes from 25.0degc
How does this relate to the Second Law of Thermodynamics?
A circular loop of wire of radius 12.5 cm is placed in a magnetic field directed perpendicular to the plane of the loop, calculate the magnitude of the emf induced in the loop
What is its inductance?
Find the minimum magnitude of the acceleration amin of the car. Express your answer in meters per second per second to the nearest integer.
A beam of light having a frequency in a vacuum of 6.0x1014 Hz enters a liquid of refractive index 2.0. It then emerges through a piece of glass of refractive indez of 1.5. What is the frquency of the light in the liquid?
A high-speed lifting mechanism supports a 880-kg object with a steel cable that is 39.0 m long and 4.00 cm2 in cross-sectional area. Determine the elongation of the cable
A thin film of oil (n = 1.10) is located on a smooth, wet pavement. When viewed perpendicular to the pavement, the film reflects mainly strongly red light at 640 nm and reflects no light at 512 nm. How thick is the oil film?
A cigarette lighter in a car is a resistor that, when activated, is connected across the 12-V battery. Find the current that the battery delivers to the lighter
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