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Question1
A mountain climber, in procedure of crossing between two cliffs by a rope, pauses to rest. She weighs 521 N. As drawing shows, she is closer to the left cliff than to the right cliff, with the result that the tensions in left and right sides of the rope are not the same. Discover the tensions in the rope to left and to right of the mountain climber. (α = 58.5° and β = 81.5°.)
Question2
A coke-oven gas contains 40% CH4 , 13% H2 and 52% CO. Find out:
a) volume of dry air required to completely burn 1 m3 (both at the standard temperature and pressure, or STP, of 273°K and 1 atm) of this gas.
b) Volume (in m3 at STP) and composition (in percent by volume) of burning product gas, assuming all H2O is in the gas phase.
c) Recalculate a) and b) assuming feed air saturated with water vapour at 75°C.
During 0.15 s, a wheel rotates through an angle of 2.74 rad as a point on the periphery of the wheel moves with a constant speed of 2.16 m/s
Gas is confined in a tank at a pressure of 12.6 atm and a temperature of 23.0°C. what is the pressure of the gas remaining in the tank
During a ballet performance a ballerina leaps into the air. If the dancer leaped at 90 degrees, what was the dancers initial speed
A camera is supplied with two interchangeable lenses, whose focal lengths are 41.0 and 150.0 mm. What is the height (including sign) of her image on the image sensor
An infinite line of positive charge lies along the y axis, with charge density 1.90 microcoulombs/m. Calculate the torque about the midpoint of the dipole
A baseball pitcher throws the ball in a motion where there is rotation of the forearm about the elbow joint as well as other movements. what is the rotational kinetic energy of the forearm
A 1500kg car starts from rest and drives around a flat 52-m-diameter circular track. at what time does the car begin to slide out of the circle
A 1300kg car drives around a flat 190m diameter circular track at 30 m/s. What is the magnitude and direction of net force on the car.
A car is stopped for a traffic signal. When the light turns green, the car accelerates, increasing its speed from 0 to 4.50 m/s in 0.852 s. What are the magnitudes of the linear impulse and the average total force experienced by a 65.0 kg passenger i..
A person desires to reach a point that is 3.40 km from her present location and in a direction that is 350 north of east. However, she must travel along streets that are oriented either north-south or east-west. What is the minimum distance she mi..
A train is traveling up a 5.0 degrees incline at a speed of 2.65 m/s when the last car breaks free and begins to coast without friction. How far did the last car travel before momentarily coming to rest
A device is turned on and 3.00 A flows through it 0.100 ms later. What is the self-inductance of the device if an induced 150 V emf opposes this
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