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A mountain climber, in the process of crossing between two cliffs by a rope, pauses to rest. She weighs 576 N. As the drawing shows, she is closer to the left cliff than to the right cliff, with the result that the tensions in the left and right sides of the rope are not the same. Find the tensions in the rope to the left and to the right of the mountain climber. (From the figure a = 66.0° and ß = 86.5°.)
A magician wishes to create the illusion of a 2.97-m-tall elephant. He plans to do this by forming a virtual image of a 38.0 cm tall model elephant with the help of a spherical mirror. How far from the mirror will the image be formed
A rope that is tied between a motor and a crate can pull the crate up a hill of ice (assume no friction) at constant velocity. Write the equations for the body in equilibrium
A narrow tube open at one end has varibale length. When a vibrating tuning fork is held near one end, What is a possible frequency of the tuning fork
A spring with spring constant 33 N/m is attached to the ceiling, and a 4.5 cm diameter, 1.5 kg metal cylinder is attached to its lower end. what length of the cylinder is submerged
A 196-g aluminum calorimeter contains 612 g of water at 21° C. A 96-g piece of ice cooled to -21° C is placed in the calorimeter, Find the final temperature of the system, assuming no heat is transferred to or from the system
The EEG. Physicians use electroencephalograms (EEGs) to study electrical oscillations in the human brain. What's the corresponding range in periods
A point mass of m1 = 2.3 kg is placed at the origin. Masses m2 = 5.4 kg and m3 = 7.6 kg are placed at 3.5 m and -5.8 m on the x-axis, respectively. Find out the location on the x-axis of the center of mass.
A particle moves from an initial position with coordinates x = -2.0 m, y = +3.0 m, What is the magnitude of the average velocity for this displacement
After being accelerated to a speed of 1.26×105 m/s, the particle enters a uniform magnetic field of strength 2.00 T and travels in a circle of radius 35.0 cm (determined by observing where it hits the screen). The results of this experiment allow one..
Suppose the projectile is traveling 85.0 m/s at its maximum height of y = 272 m. Explain how much work has been done on the projectile by air friction?
A carpenter is driving a nail into a board. The 1.25 kg hammer moves at 8.85 m/s when it strikes the nail. What is the change in length of the nail
Suppose the temperature of 4.72 L of ideal gas drops from 351 K to 275 K. (a) If the volume remains constant and the initial pressure is atmospheric pressure, Find the number of moles of gas
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