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A person is standing at the edge of the water and looking out at the ocean (see figure). The height of the person's eyes above the water is h = 1.8 m, and the radius of the Earth is R = 6.38 x 106 m. (a) How far is it to the horizon? In other words, what is the distance d from the person's eyes to the horizon? (Note: At the horizon the angle between the line of sight and the radius of the earth is 90°.) (b) Express this distance in miles
Question on center of gravity Discover speed of each block
A force vector points at an angle of 50.6° above the +x axis. It has a y component of +280 newtons. Calculate the magnitude of the force vector.
A carpenter uses a tape measure to measure the lenght of one side of a room. However , a large bookcase on one side of the room prevents him from measuring the full lenghth. Is this random or systematic error
Hydraulic engineers often use, as a unit of volume of water, the "acre-foot", What volume of water, in acre-feet, fell on the town
A meter stick is pivoted at the 0.50 m line. A 3kg object is hung from the 0.15-m line. Where should a 5kg object be hung to achieve equilibrium (the meter stick oriented horizontal and motionless)?
A 6 m board of mass 7 kg is hinged at one end, with a 60 kg block nesting on the board 245 cm from the hings. A force ~F is applied vertically at the other end to lift of the board. Find the force exerted by the hinge
In an ideal Rankine Cycle, steam exhausts a turbine at the rate of 10.1 million lbm per hour into a condenser at a temperature of 102 degrees F (Tsat for 1.0 psia), What is the rate of heat rejection by the condenser
A particular wire has a diameter of 1.7 mm and length of 1.3 m. If its resistance is 15 m?, what is the resistivity of the metal from which it is made
A train is rounding a circular curve whose radius is 2.00 multiply.gif 102 m. Find the magnitude of the total acceleration (centripetal plus tangential) of the train
The star nearest the earth (the sun) radiates the most energy at a wavelength of 470 nm. What is the temperatures of the sun's outer layer, the photosphere
An airplane has a mass of 3.0*10^6 kg and air flows past the lower surface of the wing at 96 m/s, how fast must the air flow over top of the wing
Find the potential 1.18 cm from a proton. The Coulomb constant is 8.9876 × 10^9 N m^2/C^2 and the elemental charge is 1.602 × 10^?19 C
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