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A pilot is flying a plane with a speed (with respect to air) at 220m/s in a region where the wind is blowing at a constant 30.0 m/s at 20.0 degree South of West. Obtain in what direction should she head the plane thus that the resultant heading with respect to the ground is 20.0 degree west of North?
A motorcyclist is able to ride on the vertical wall of a bowl- shaped track . his weight is counteracted by the friction of the wall on the tires. what force increase or decrease if he rides faster.
a power transmission line feeds input power at 2300 v to a stepdown transformer with its primary windings having 4000
A string length 2.0 m and linear mass density 25.0 mg/m vibrates at a fundamental frequency of 450.0 Hz. What is the speed of the transverse strin waves
Which container has more gas molecules?
Calculate the gravitational force between Sun and Earth by using Newton's universal gravitation, Does this mean that everything on Earth is heavier at night
A wheel has a maximum rate of rotation of 150 revolutions per minute. Starting from rest, Calculate the magnitude of its angular acceleration
A 16 kg rock, m, is on the edge of a 90 m cliff, h, as shown in Figure 11-20. Assume that air resistance is negligible. What speed does the rock have as it strikes the ground
a nearsighted person cannot see objects clearly beyond 25 cm her far point. if she has no astigmatism and contact
Two rods of equal length L = 1.51 m form asymmetric cross. The horizontal rod has a chargeof Q = 100.0 C, and the vertical rod a charge of-Q = -100.0 C. The charges on both rods are distributed uniformly along their length.
A gallon of gasoline contains about 1.3x10^8 joules of energy. A 2000-kg car traveling 20 m/s skids to a stop. Estimate how much gasoline it will take to bring the car back to the original speed
assume that a proof plane is a conducting disc with a radius of 1.0 cm and is used to transfer some charge from the sphere described above. How much charge will be transferred in one scoop
At what rate does the Sun radiate energy, given that it's essentially a spherical blackbody with radius 6.96x10^8 m and surface temperature 5800 K?
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