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A power company from which you get electricity charges you per unit energy. In the case of the power company the unit of energy used is the kilowatt-hour. Using the mathematical definition of electrical power help me show that the kilowatt-hour is a unit of energy.
f the original electric field due to a charge is 8.0 × 105 N/C, determine the magnitude of the new electric field at twice the distance from the charge
An object 4.0 cm high is placed 20 cm to the left of aconverging lens with a focal length of + 8.0 cm. Adiverging lens with a focal length of – 12 cm is placed40 cm to the right of the converging lens. Describe the location,nature and size of the i..
q1. if the proton is released from rest in a uniform electric field does equivalent electric potential at the protons
A liquid (? = 1.65 g/cm3) flows through a horizontal pipe of varying cross section, Calculate the smaller section's pressure
question1in an xray tube electrons are accelerated in a uniform electric field and then strike a metal target. assume
consider a piece of photovoltaic.a sketch its layout showing the two regions of different doping identifying where the
An electron moving perpendicular to a magnetic field of 4.2 X 10-2 T moves in a circle of radius 0.20 cm. How fast is this electron moving
Physicians perform needle biopsies to sample tissue from internal organs. A spring-loaded gun shoots a hollow needle into the tissue; extracting the needle brings out the tissue core. Find the impulse imparted by the tissue
A concave mirror has a focal length of 20 cm. A paraxial beam of light coming from a distant object forms its image at the focal point. compute where is the final image
The blades of a kitchen blender rotate counterclockwise at 2.2×104 rpm (revolutions per minute) at top speed. find the average angular acceleration of the blades
The froghopper, Philaenus spumarius, holds the world record for insect jumps. When leaping at an angle of 58.0^\circ above the horizontal, some of the tiny critters have reached a maximum height of 52.7cm above the level ground.
The maximum speed of a 3.1kg mass attached to a string is 0.68 m/s and the maximum force exerted on the mass is 11N. What is amplitude of motion for the mass? What is the force constant on the string? What the frequency.
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