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A) Standard sea level pressure is approximately 1013 hPa andstandard surface temperature in the U.S Standard Atmosphere is 15degree C. What is the density of dry air under these conditions?B) A sample of dry air has a pressure of 400 hPa and a density of0.7 kg m^-3. What is its temperature in degrees Celsius?C) A sample of dry air has a temperature of 30 degree C and aspecific volume of 2.0 m^3 kg^-1. What is the pressure?D) The record low observed surface pressure (in typhoon Tip, 1979)was 870 hPa; the record high (Mongolia, 2001) was 1087 hPa. Airtemperature at the surface can easily vary between -40.0 degree Cand +50.0 degree C. Find the densities of air corresponding to all four possible combinations of the above extremes.E) Based on your answers to d, which of the two variables,pressure or temperature, is typically responsible for the mostpronounced variations in the density of air at sea level?
Objects with masses of 145kg and a 445kg are separated by 0.330m. At what position (other than infinitely remote ones) can the 32kg object be placed so as to experience the net force of zero.
A 1.2m -long, 900g rope pulls a 9.0kg block of ice across a horizontal, frictionless surface. The block accelerates at 1.0m/s^2, How much force pulls forward on the block of ice
You want to double the resonance angular frequency of a series R-L-C circuit by changing only the pertinent circuit elements all by the same factor
Two objects of the same mass move along the same line in opposite directions. The first mass is moving with speed. What was the speed of the second mass before the collision
A startled armadillo leaps upward, rising 0.575 m in the first 0.195 s. What is its initial speed as it leaves the ground
A solenoid 7.5 cm in radius and 88m in length has 9800 uniformly spaced turns and carries a current of 3.5 A. What is the magnetic flux through this circular surface
Two vehicles approach a right angle intersection and then collide. find the magnitude and direction of the final velocity of the wreck
A woman pulls a loaded sled of mass m = 75 kg along a horizontal surface at constant velocity
A uniform bar is 5.00 m long and weighs 975 N. A weight of 255 N is attached to one end while a weight of 375 N is attached 1.50 m from the other end. Find the tension in the cable
Consider a very high energy cosmic ray photon, with energy 109mp = 1018 eV as measured in Sun's rest frame, scattering off a cosmic microwave background photon with energy 2 x 10-4 eV . Establish the maximum energy of the scattered photon.
A 2kg box slides along a frictionless surface with a speed of 15m/s and approaches a horizontal spring with a spring constant of 2000N/m. If one end is fixed, How far will the spring compress in stopping the box
A string trimmer is a tool for cutting grass and weeds; it utilizes a length of nylon "string" that rotates about an axis perpendicular to one end of the string. What is the length of the rotating string
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