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A model airplane of mass 0.870 kg is flying at constant speed in a horizontal circle at one end of a 28.0 m cord and at a height of 17.0 m. The other end of the cord is tethered to the ground. The airplane circles 6.00 times per minute and has its wings horizontal so that the air is pushing vertically upward.
(a) What is the acceleration of the plane?
(b) What is the tension in the cord?
(c) What is the total upward force (lift) on the plane's wings?
A reflecting telescope has a main mirror with fM = 620 mm. If an eyepiece with a magnification of 15 is used, what is the total magnification of the telescope
A 20x telescope has a 12-cm diameter objective lens. What minimum diameter should the eyepiece lens have to collect all the light rays from an on axis distant source.
White light is incident on a soap film (n = 1.29) in air. compute the minimum thickness of the soap film
A mass M=171 kg is suspended from the end of a uniform boom. The boom (mass=69.0 kg, length=3.60 m) is at an angle %u03B8=69.0 deg from the vertical, Calculate the tension in the horizontal cable
A rock climber stands on top of a 53{\rm m} -high cliff overhanging a pool of water. He throws two stones vertically downward 1.0{\rm s} apart, What is the speed of the first stone as it hits the water
Tasha with a nearsighted eye has near and far points of 16 cm and 25 cm, respectively. What is the power of the lens she uses
An object is located to the left of a convex lens whose focal length = +40cm. The magnification produced by the lens = 3.0 m. Calculate the distance through which the object must be moved
The range of human hearing extends from approximately 20 Hz to 20,000 Hz. Find the wavelengths of these extremes at a temperature of 8°C. 20 Hz
A cube of side 8.50cm is placed in a uniform field E=7.50×103 N/C with edges parallel to the field lines, What is the net flux through the cube, What is the flux through the right face
Two coils of wire are placed close together. Initially, a current of 2.3 A exists in one of the coils, What is the mutual inductance of the two-coil system
A string is 41.0 cm long and has a mass of 3.00 g. A wave travels at 4.20 m/s along this string. what is the speed of a wave along the second string
The antenna on a cordless phone radiates microwaves at a frequency of 2.0 GHz. What is the maximum length of the antenna
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