Physics, 17.08.2019 16:10, mercymain1014
Forced air at t 25 c and v 10 m/s is used to cool electronic elements on a circuit board. one such element is a chip, 4 mm 4 mm, located 120 mm from the leading edge of the board. experiments have revealed that flow over the board is disturbed by the elements and that convection heat transfer is correlated by an expression of the form estimate the surface temperature of the chip if it is dissipating 30 mw.
Answers: 3
Physics, 22.06.2019 05:50, ladyty2109
Astudent wears sunglasses to her read a book more easily which wave interaction occurs as light passes from the air into the plastic lenses? a polarization b. refraction c. diffraction d. interference
Answers: 1
Physics, 22.06.2019 19:00, Geo777
Abatter hits a 0.140-kg baseball that was approaching him at 30 m/s and, as a result, the ball leaves the bat at 40 m/s in the reverse of its original direction. the ball remains in contact with the bat for 2.0 ms. what is the magnitude of the average force exerted by the bat on the ball?
Answers: 1
Physics, 22.06.2019 20:30, cupcake3103670
Aball is thrown from the top of a building with an initial velocity of 21.9 m/s straight upward, at an initial height of 51.6 m above the ground. the ball just misses the edge of the roof on its way down, as shown in the figure. (a) determine the time needed for the ball to reach its maximum height. (b) determine the maximum height. (c) determine the time needed for the ball to return to the height from which it was thrown, and the velocity of the ball at that instant. (d) determine the time needed for the ball to reach the ground. (e) determine the velocity and position of the ball at t = 5.35 s.
Answers: 1
Forced air at t 25 c and v 10 m/s is used to cool electronic elements on a circuit board. one such e...
Mathematics, 14.07.2020 21:01
Mathematics, 14.07.2020 21:01
Mathematics, 14.07.2020 21:01