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An object is placed to the left of a lens, and a real image is formed to the right of the lens. The image is inverted relative to the object and is one-half the size of the object. The distance between the object and the image is 80 cm.
(a) How far from the lens is the object?
(b) What is the focal length of the lens?
Two automobiles of equal mass approach an intersection. One vehicle is travelling with velocity 13 m/s toward the east and the other is travelling north with speed v2i. Neither driver sees the other.
The speed of an alpha particle is determined to be 1.55×106 m/s. what is the magnitude of that potential
A uniform electric field of magnitude 256 V/m is directed in the negative y direction. Through what potential difference did the charge move
A 250 g Teddy Bear and a 5 kg baby stroller are nudged off a window sill and fall 5 meters to the ground. Determine the speeds and kinetic energies of both objects
A small, plastic sphere of mass m = 111 g is attached to a string There is an electric field of 122 N/C directed along the + x axis
IP Water flows through a horizontal tube of diameter 3.0cm that is joined to a second horizontal tube of diameter 2.0cm. Find the speed of flow in the first tube in m/s
You have a 2.5m long copper wire. You want to make an N-turn current loop that generates a 1.2mT magnetic field at the center when the current is 1.9A, What will be the diameter of your coil
You run a microwave for 6 minutes together with a 1500 W boom-box and a 2800 W space heater. What is the power of your microwave
An ideal engine has an efficiency of 0.605 and uses gas from a hot reservoir at a temperature of 502 K. What is the temperature of the cold reservoir
How much would it cost just to keep the hot water inside the heater for one week? d)Suppose that you wrap the hot water heater on all sides with a 10 cm thick blanket of fiberglass insulation which has a thermal conductivity of 0.04 W/(m K).
A disk-shaped merry-go-round of radius 2.63 m and mass 155 kg rotates freely with an angular speed of 0.763 rev/s, Calculate the initial and final kinetic energies for this system.
The only two forces acting on a body have magnitudes F1 and F2 and directions that differ by an angle ?. what is the mass of the body
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