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Q. A flowerpot falls from a windowsill 23.0 m above the sidewalk. Ignoring air resistance, how fast will it be moving when it strikes the ground? How long will it take to strike the ground?
Q. A 45.0-kg girl is standing on a 144-kg plank. The plank, originally at rest, is free to slide on a frozen lake, which is a flat, frictionless surface. The girl begins to walk along the plank at a constant velocity of 1.56 m/s to the right relative to the plank. (Let the direction the girl is moving in be positive. Indicate the direction with the sign of your answer.) What is her velocity relative to the surface of ice?
What is the velocity of the plank relative to the surface of ice?
Explain functionalism, conflict theory and interactionism
A positively charged light metal ball is suspended between two oppositely charged metal plates on an insulating thread as shown below. After being charged once, plates are disconnected from the battery. define the behavior of the ball.
What is the wavelength of emitted photon of the previous question if k = 10eV/ °A2, where °A denotes Angstrom and eV: electron volt. Is the emitted photon in visible spectrum of a human eye.
Displacement is which of the following types of quantities.
An electron is projected with an initial speed 1.00×106 into the uniform field between the parallel plates. Suppose that field between the plates is uniform and fixed vertically downward, and that field outside the plates is zero. The electron enters..
A roller coaster is towed up an incline at a steady speed of 0.51m/s by a chain parallel to the surface of the incline. The slope is 2.85 % that means that the elevation increases by 2.85 m for every 100m of horizontal distance.
How fast must the car be travelling just as it leaves the cliff in order to clear the river and land safely on the opposite side.
A proton has a mass of 1.67 x 10^-27 kg and a charge of 1.60 x 10^-19 C. What is the gravitational force on a single proton at Earth's surface.
Monochromatic light from a distant source is incident on a slit 0.750 {rm mm} wide. On a screen 2.00 {rm m} away, the distance from the central maximum of the diffraction pattern to the first least amount is measured to be 1.35 {rm mm}.
Using the medium p model of the line, Find the current, voltage, reactive power, real power, & power factor at the sending end of the line.
A pump, submerged at the bottom of a well that is 35m deep, is used to pump water uphill to a house that is 50m above the top of the well, as shown above. The density of the water is 1000 kg/m3. All pressures are gauge pressures. Top of well pipe to ..
How long does it take for amplitude to drop to half its initial value . How long does it take for mechanical energy to drop to half its initial value.
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