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During a storm, a tree limb breaks off and comes to rest across a barbed wire fence at a point that is not in the middle between two fence posts. The limb exerts a downward force of 151 N on the wire. The left section of the wire makes an angle of 14 degrees relative to the horizontal and sustains a tension of 447 N. Find the magnitude and direction of the tension that the right section of the wire sustains.
A 630-Hz sound travels through pure hydrogen. What is the speed of sound in hydrogen
If N is 25mm, the focal length of a certain microscope's eyepiece is 12.5 mm and the magnification of its objective lens is 50, what is the overall magnification of the microscope
A 1.59 kg block slides on a frictionless, horizontal surface with an speed of 1.54 m/sec. How long is the block in contact with the spring before it comes to rest
A golf club has a lightweight flexible shaft with a heavy block of wood or metal (called the head of the club) at the end. A golfer making a long shot off the tee uses a driver, What is the speed of the club head immediately after the collision
A model rocket engine has an average thrust of 5.26 N. It has an initial mass of 25.9 g, which includes fuel mass of 13.0 g. The duration of its burn is 1.90 s. find What is the average exhaust speed of the engine
The electric field on the surface of a 12cm -diameter sphere is perpendicular to the sphere, What is the electric flux through the sphere
Vibration from a 475 Hz tuning fork sets up standing waves on a string clamped at both ends (one of which you may take as x=0). What is the wavelength of the travelling waves that form this standing wave
R 134a flows at steady state through a horizontal pipe havingan inside diameter of 4 cm, entering as saturated vapor at -8degrees C with a mass flow rate of 17 kg/'min. Refrigerant vaporexits at a pressure of 2 bar.
A copper weight is placed on top of a 0.23 kg block of wood (density = 0.60 x10^3 kg/m3) floating in water. What is the mass of the copper
what is Spectroscopic and Photometric Parallaxes ? Define specific heat capacity and thermal capacity.
A pencil is held perpendicular to the optical axis of a concave spherical mirror. The pencil is 81 cm from the center of the mirror, What is the magnification of the pencil's image
A girl walks 26 meters at an angle of 39° west of south. How far west of her starting point is she
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