Obtain the tension in the string
A 9.0 kg hanging weight is connected by a string over a pulley to a 5.0 kg block sliding on a flat table. If the coefficient of sliding friction is 0.20, find the tension in the string.
a. 19 Nb. 24 Nc. 32 Nd. 38 N
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What is the velocity of the air leaving a diffuser when air enters it at 15 psia, 70 oF with a velocity of 1500 ft/s and leaves at 30 psia, 210oF?
Approximately how far from the edge of the wedge (where it tapers to zero thickness) does the first maximum in the reflected light occur? Assume that the wedge is surrounded by air, and that the index of refraction of the glass is n=1.5.
Air is now added to the accumulator until the volume is 1 ft3 and the temperature is 80 oF. How much air has been added to the accumulator?
On an overflow structure of 50 degrees slope the water depth (measured normal to the surface of the structure) is 1.2 m (4 ft) and the streamlines are essentially straight and parallel.
The pressure is 50 psi. At a point 40 ft away the diameter reduces to 3 in. Calculate the pressure here when the pipe is horizontal and when the pipe is vertical with flow downward.
A spaceship lifts off vertically from a planet where g = 7.0 m/s2. If the ship has an upward acceleration of 1.8 m/s2 as it lifts off, what is the magnitude of the force exerted by the ship on its pilot, who weighs 665 N on Earth?
A farsighted man has a contact lens prescription of +2.8 diopters, enabling him to see items in focus when they are no closer to his eyes than 28 cm. What is his near point when he is not wearing the contact lenses?
The work and the heat per degree change of temperature for a system executing a non-flow process are given by dW/dt= 80 watt-sec/°C and dQ/dt= cal/°C; respectively.
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