Answers: 1
Physics, 22.06.2019 04:30
Asystem containing an ideal gas at a constant pressure of 1.22ร10^5 pa gains 2140 j of heat. during the process, the internal energy of the system increases by 2320 j. what is the change in volume of the gas?
Answers: 3
Physics, 22.06.2019 16:40
Aparticle's position is given by x = 3.00 - 9.00t + 3t2, in which x is in meters and t is in seconds. (a) what is its velocity at t = 1 s? (b) is it moving in the positive or negative direction of x just then? (c) what is its speed just then? (d) is the speed increasing or decreasing just then? (try answering the next two questions without further calculation.) (e) is there ever an instant when the velocity is zero? if so, give the time t; if not, answer "0". (f) is there a time after t = 3 s when the particle is moving in the negative direction of x? if so, give the time t; if not, answer "0".
Answers: 3
Physics, 23.06.2019 11:00
1) a child holds two dogs on two separate leads. the dogs are pulling in different directions. one is pulling a force of 20n north and one is pulling 15n eastwards. calculate the resultant force on the child. state the direction. (use the parallelogram of forces) 2) a force of 20n acts horizontally on an object. a second force of 5n acts at 60 degrees to the first one. calculate the resultant force. worth 20 points, need answers asap with method you x
Answers: 2
Physics, 23.06.2019 12:30
An electron with a charge of -1.6 ร 10^-19 coulombs experiences a field of 1.4 ร 10^5 newtons/coulomb. what is the magnitude of the electric force on this electron due to this field? a. 1.6 ร 10^-3 newtons b. 1.4 ร 10^24 newtons c. 2.2 ร 10^-14 newtons d. 7.4 ร 10^-13 newtons e. 4.5 ร 10^14 newtons
Answers: 1
What best describes the bromide ion that forms...
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