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The drawing shows a person looking at a building on top of which an antenna is mounted. The horizontal distance between the person's eyes and the building is 91.7 m. In part a the person is looking at the base of the antenna, and his line of sight makes an angle of 32.7o with the horizontal. In part b the person is looking at the top of the antenna, and his line of sight makes an angle of 35.7o with the horizontal. How tall is the antenna?
Determine an angle (in radians) through which the drill rotates during this period.
A man pushes a lawn mower on a level lawn with a force of 200N. If 40% of this force is directed downward, then how much work is done by the man
A battery with an emf of 12.0 V shows a terminal voltage of 10.9V when operating in a circuit with two lightbulbs, What is the battery's internal resistance
What is the magnitude of the acceleration caused by magnetic force? Ignore the gravitational force acting on the electron.
Vector A has components of +3 in the x-direction and -4 in the y-direction. Vector B has components -2 in the x-direction and +3 in the z-direction
Suppose that when you ride on your 8.50 kg bike the weight of you and the bike is supported equally by the two tires. If the gauge pressure in the tires is 65.5 lb/in2 and the area of contact between each tire and road is 7.13 cm2, what is your wei..
The press box at a baseball park is 30 ft above the ground. A reporter in the press box looks at an angle of 18 degrees below the horizontal to see second base. What is the horizontal distance from the press box to second base.
A 426 kg bear grasping a vertical tree slides down at constant velocity. The acceleration of gravity is 10m/s2. What is the friction force that acts on the bear? Answer in units of N.
Two point charges q1= 5.00x10^-6C and q2= -3.0x10^-6C are located on x-axis at x1= -0.4m and x2=0.6m, Find the electric field and the electric potential at the origin
If a car traveling at 55 km/h will skid 24 m while its brakes lock, how far will it skid if it is traveling at 130 km/h when its brakes lock.
A ‘U' shaped pipe contains a liquid that is sealed at both ends by pistons. Determine the downward force
A car goes 13 miles east, then due North ending up 25 deg North of East from its initial position. How far due North did it travel
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