Physics, 15.04.2020 01:34 roblesjairus
A metal bar in a low temperature physics experiment with mass m = 93 kg had its temperature raised from T1 = 28 K to T2 = 47 K. The metal bar has a specific heat that is a function of temperature: c(T) = A + αT, where A = 430 J/(kg⋅K) and α = 10.2 J/(kg⋅K2). Note the metal bar does not change in volume as it is heated.
Answers: 2
Physics, 22.06.2019 01:30
Ablock of mass 1.5 kg slides down an inclined plane that has an angle of 15. if the inclined plane has no friction and the block starts at a height of 3 m, how much kinetic energy does the block have when it reaches the bottom? acceleration due to gravity is g = 9.8 m/s2. a. 6.8 j b. 50.9 j c. 0 j d. 44.1 j
Answers: 1
Physics, 22.06.2019 13:00
Nacidified solution was electrolyzed using copper electrodes. a constant current of 1.18 a caused the anode to lose 0.584 g after 1.52 ✕ 103 s. given that the charge of an electron is 1.6022 ✕ 10−19 c, calculate avogadro's number. assume that copper is oxidized to cu2+ ions.
Answers: 1
Physics, 22.06.2019 15:50
The space between two 15-in.-long concentric cylinders is filled with glycerin (viscosity = 8.5 × 10-3 lb·s/ft2). the inner cylinder has a radius of 1 in. and the gap width between cylinders is 0.1 in. determine (a) the torque and (b) the power required to rotate the inner cylinder at 180 rev/min. the outer cylinder is fixed. assume the velocity distribution in the gap to be linear.
Answers: 2
Physics, 22.06.2019 16:00
An charge with mass m and charge q is emitted from the origin, (x,y)=(0,0). a large, flat screen is located at x=l. there is a target on the screen at y position y(h), where y(h) > 0. in this problem, you will examine two different ways that the charge might hit the target. ignore gravity in this problem. 1.assume that the charge is emitted with velocity v(0) in the positive x direction. between the origin and the screen, the charge travels through a constant electric field pointing in the positive y direction. what should the magnitude e of the electric field be if the charge is to hit the target on the screen? express your answer in terms of m, q, y(h), v(0), and l. 2.now assume that the charge is emitted with velocity v(0) in the positive y direction. between the origin and the screen, the charge travels through a constant electric field pointing in the positive x direction. what should the magnitude e of the electric field be if the charge is to hit the target on the screen? express your answer in terms of m, q, y(h), v(0), and l.
Answers: 1
A metal bar in a low temperature physics experiment with mass m = 93 kg had its temperature raised f...
Mathematics, 05.07.2019 16:00
Mathematics, 05.07.2019 16:00
Mathematics, 05.07.2019 16:00
Mathematics, 05.07.2019 16:00
History, 05.07.2019 16:00
Mathematics, 05.07.2019 16:00
History, 05.07.2019 16:00
History, 05.07.2019 16:00
Health, 05.07.2019 16:00
English, 05.07.2019 16:00
Computers and Technology, 05.07.2019 16:00