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Lassie is 66 cm in height and 88 cm in length. She stands with her face 10 meters from the plane of the thin convex lens whose focal length is 2.5 m. What is the height and length of Lassie's image?
Two capacitors C1 = 3.8 ?F, C2 = 17.8 ?F are charged individually to V1 = 14.4 V, V2 = 4.3 V. Calculate the final potential difference across the plates of the capacitors once they are connected
A proton is (approximately) a spherically symmetrical ball of charge of radius 1 x 10-15 m. what is the magnitude of the repulsive electric force
When an object is placed 60 cm from a converging lens, it forms areal image. When the object is moved to 40 cm from the lens, the image moves 10 cm farther from the lens. What is the focal length of the lens?
A block of mass 4.6 kg slides 15 m from rest down an inclined plane making an angle of 28 o with the horizontal. what is the retarding force due to friction
Two equal charges of 3.00 mC lie along the x-axis: one is at the origin, and the other is 2.0m from the origin. Discover the magnitude and direction of the electric field at a point on they-axis .25m from the origin.
two point charges -2q and 3q are on the x-axis -2q at the origin and 3q at x d. choose the potential to equal zero at
in the bohr theory of the hydrogen atom an electron moves in a circular orbit about a proton where the radius of the
Starting from rest, a 92-kg firefighter slides down a fire pole. How far did he slide down the pole
A person is riding a bicycle, and its wheels have an angular velocity of 16.1 rad/s. Then, the brakes are applied and the bike is brought to a uniform stop. During braking, the angular displacement of each wheel is 18.4 revolutions.
A Goodyear blimp typically contains 6580 m3 of helium(He) at an absolute pressure of 1.10 x 105 Pa. Thetemperature of the helium is 275 K. What is the mass (in kg) of the helium in the blimp?
A ball is fired with an initial speed of 40 m/s at an angle of 30 degree above the horizontal. Determine what is the maximum height of the ball
At normal incidence, the intensity of sunlight at the Earth is 1400 W/m2. find the force on the Earth due to radiation pressure from the Sun
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