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You are standing on a scale inside an elevator. The scale reads 23 percent less than your weight. What is the acceleration of the elevator? You are standing on a scale inside an elevator. The scale reads 24 percent more than your weight. What is the acceleration of the elevator? (Define positive y upward.) please help shoe me step by step on how to get the answer
A horizontal light ray is incident on a crown glass prism as shown in the figure below where ? = 42.5°. Find the angle of deviation ? of the ray-the angle
An ideal monatomic gas initially has temperature Ti and pressure pi. It is to expand from volume Vi to volume Vf. If the expansion is isothermal, what are the final pressure and the work done by the gas
A system expands by 0.68m3 at a constant pressure of 126kPa, Find the heat that flows into or out of the system if its internal energy decreases by 1850J
What diameter must a helium filled balloon have to float with neutral buoyancy? The mass of the empty balloon is 2.0g
A baseball leaves a pitcher's hand horizontally at a speed of 156km/h. The distance to the batter is 18.3 m. (overlook the effect of air resistance.) (a) How long does ball take to travel the first half of that distance? (b) The second half? (c) H..
A bug of mass 1.0 grams is caught up in the center of an oscillating spider web. show that this motion is generated by hooke's law force, f=-kx
State the condition that is necessary for a charge to move in a wire. Relate the definition of electric current to the units of current. Explain the cause of resistance and how the resistance of a wire can be determined.
A block of wood (density=.50 grams/cm^3) is floating in oil (density=0.75 grams/cm^3). the mass of the wood is 1500 grams. Determine the volume of the oil displaced
A moving body undergoes uniform acceleration while travelling in a straight line between points X, Y and Z. The distances XY and YZ are both 40m. The time to travel from X to Y is 12s and from Y to Z is 6s.
A car is driving directly north on the freeway at a speed of 117 km/h and a truck is leaving the freeway driving 76 km/h in a direction that is 40° west of north
Suppose your weight has been constant, but then - after being introduced to really good chocolate - you start eating 100 extra food calories (recall, 1 food calorie is really 1kcal or 1000 calories of energy) every day without otherwise adjusting ..
A bicycle wheel is rotating at 40rpm when the cyclist begins to pedal harder, giving the wheel a constant angular acceleration of 0.45rad/s2, What is the wheel's angular velocity, in rpm, 10s later
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