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1) Different liquids have different rates of heat conduction. How can this statement be proved practically?
2) State and explain any 5 effects and applications produced by natural and forced convections in liquids and gases.
A 1.5V battery delivers 9.0ma for 40 hours. During that time, the battery voltage drops linearly from 1.5V to 1.0 V. How much energy does the battery deliver during this time
Two points are located on a rigid wheel that is rotating with an increasing velocity about fixed axis. The axis is perpendicular to the wheel at its center. Point 1 is located on the rim and point 2 is halfway between rim and axis .at any given insta..
During a tennis serve, a racket is given an angularacceleration of magnitude 160 rad/s2. find the magnitude of the total acceleration of the top of the racket
A small object slides along the frictionless loop-the-loop with adiameter of 3m. What minimum speed must it have at the top of the loop?
Two skaters, a man and a woman, are standing on ice. Neglect any friction between the skate blades and the ice. The mass of the man is 79 kg, Determine the acceleration of the woman
A Ping-Pong ball with mass 6 g is attached by a thread to the bottom of a beaker. When the beaker is filled with water so that the ball is totally submerged, Determine the diameter of the ball
bob walks 390 m south then jogs 640 m southwest then walks 390 m in a direction 25circ east of north.a use either
a .80 meter radius wheel comes off truck that is going 15 ms. it rolls down the road slowing to a stop after rolling
Calculate the ratio of the scattered light intensity of blue color (400 nm) to that of red color (700 nm)
An electron (mass of 9.110×10-31kg and charge of -1.602×10-19C is released at rest above the surface of the earth (where g = 9.81 m/s2). A second electron directly below it exerts an electrostatic force on the first electron that exactly cancels the ..
The electric field at the surface of a charged, solid, coppersphere with radius 0.210 m is3380 N/C directed toward the center ofthe sphere. What is the potential at the center of the sphere, ifwe take the potential to be zero infinitely far from thes..
After a day of testing race cars, you decide to take your own 1478 kg car onto the test track. While moving down the track at 11.7 m/s, you suddenly accelerate to 28.8 m/s in 12.6 s. What average net force have you applied to the car during tha..
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