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Q. What should be the spring constant of a spring designed to bring a 1400 car to rest from a speed of 95 so that the occupants undergo a maximum acceleration of 5.0?
Q. A parallel-plate air capacitor is made from two plates 0.070 m square, spaced 3.5 mm apart. What must the potential difference between the plates be to produce an energy density of 0.067 J/m^3?
An infinite non conducting sheet has a surface charge density σ = +5.80 pC/m2. (a) How much work is completed by electric field because of the sheet if a particle of charge q = +1.60 × 10-19 C is moved from the sheet to a point P at distance d = 3.56..
As shown in the figure, sunlight is coming straight down (negative z-direction) on a solar panel (of length L = 1.51 m and width W = 0.930 m) on the Mars rover Spirit.
An air molecule is moving at a velocity of 444 m/s. How various meters would the molecule move during 7.00 ms (milliseconds) if it didn't collide with any other molecules.
What is the dissimilarity between sprinters and nonathletes
Use approximate calculations assuming constant current during the output pulse. Calculate the ampere-hour rating of the battery so it lasts for five years.
Polymer diffusion and Calibration of an optical tweezer
A ball is thrown straight up from the edge of the roof of the building. A second ball is dropped from the roof a time of 1.01 s later. You may ignore air resistance.
How much work did the movers do (horizontally) pushing a 150- crate 10.2 across a rough floor without acceleration, if an effective coefficient of friction was 0.50.
A patients blood pressure is measured as 140 / 80, measured in level with the heart. What would you expect the blood pressure to be at the top of the head if there is a 45cm height difference in the two points. Density of blood is 100kmm-3. Give r..
A 79.0 kg man is riding in a shopping mall. The escalator moves the man at constant velocity from ground level to the floor above, the vertical height of 4.40m.What is the work completed on the man by the gravitational force and the escalator.
Nitrogen and oxygen in their liquid states have densities only 0.80 and 0.90 that of water. Atmospheric pressure is due primarily to weight of nitrogen and oxygen gas in the air. If atmosphere liquefied would its depth be greater or less than 10.30 m..
A tube is open only at one end. A certain harmonic generted by the tube has a frequency of 470Hz. The next higher harmonic has a frequency of 555Hz. The speed of sound in air is 343m/s.
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