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An airplane pilot wishes to fly directly westward. According to the weather bureau, a wind of 75.0 Km/h is blowing southward. The speed of the plane relative to the air (called the air speed) as measured by instruments aboard the plane is 310Km/h. In which direction should the pilot head? In this particular problem, you can compare the speed of the plane relative to the ground (the ground speed) to known quantities to evaluate the reasonableness of your answer. Find the ground speed of the plane,Vp/G .
An air mass has a temperature of 68F at 970hPa with a mixing ratio of 5 g kg-1. Without any condensation or mixing the air mass now has a temperature of 50F and a pressure of 750hPa.
Three resistors, 28, 46, and 78 %u03A9, are connected in series, and a 0.47-A current passes through them. find the potential difference across the three resistors
A 56 kg woman and a 78 kg man stand 13.0 m apart on frictionless ice, How far from the man is their center of mass
A railroad car of mass 3.5*10^4 kg moving at 2.50 m/s collides and couples with two coupled railroad cars, each of the same mass as the single car and moving in the same direction at 1.20 m/s. What is the speed of the three coupled cars after the c..
A softball pitcher rotates a 0.250 kg ball around a vertical circular path of radius 0.4 m before releasing it. what is its speed upon release
A 115 mCi radioactive tracer is made in a reactor. When delivered to a hospital 16 hours later its activity is 95 mCi. What is the tracer's half-life
Light hits the surface of water at an incident angle of 36° with respect to the normal line. What is the angle between the reflected ray and the refracted ray?
The lines in a grating are uniformly spaced at 1520nm. Analyse the angular separation of the second order bright fringes between light of wavelength 603nm and 615.4 nm. Reply in units of mrad.
A flat circular mirror of radius 0.140 m is lying on the floor. Centered above the mirror, at a height of 0.810 m, is a light source. Calculate the diameter of the bright circular spot formed
The planet Neptune has a satellite, Proteus, which travels in an orbit 1.180*10^8 m with a period of 1.12 days. Calculate the mass of Neptune from this information
An archer shoots an arrow with a velocity of 48.0 m/s at an angle of 46.5° with the horizontal. What is the initial speed of the apple
The activity of a freshly prepared radioactive sample is 1010 disintegrations per second, whose mean life is 109 s. find the mass (in mg) of the radioactive sample
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