Information:
A jet of steam at 100β is directed for a short time on to a large block of ice at 0β. Some of the steam condenses to form water and some ice is melted. The condensed steam forms 0.40 kg of water at 0β.
Questions:
1. Calculate the heat given out by this steam in changing to water without change in temperature. [Take the specific latent heat of vaporization of water as 2 200 kJ/kg].
2. Calculate the heat given out by this water as it cools to the temperature of the ice. [Take the specific heat capacity of water to be 4.2 kJ/(kg K).]
Answers: 3
Physics, 22.06.2019 04:20
When considering gravity acceleration and the force of acceleration, what must be true? a. the direction of acceleration must be perpendicular to the direction of the force. b. the direction of the force and the direction of acceleration must be the same as each other. c. the direction of the force and the direction of acceleration must be opposite of each other. d. the mass of the body must be the same as the acceleration of the body.
Answers: 1
Physics, 22.06.2019 06:30
5submission this assignment is worth 20 points total. you are required to submit the following by next lab: 1. (3 points) determine the equation for the output angular velocity Ο2 = ΞΈΛ 2 as a function of ΞΈ1, Ο1 = ΞΈΛ 1 and Ξ±. you must show all your work to receive credit. 2. (2 points) use the result of problem#1 to plot Ο2 over 0 β€ ΞΈ1 β€ 360deg with Ο1 = 360deg/sec. do this for Ξ± = {10,30}deg. show the results on the same plot and properly label the axes, title, legend. for this you can use matlab or ms excel. 3. (3 points) determine the equation for the output angular acceleration ΟΛ 2 and create a plot similar to the one in problem#2. 4. (10 points) submit plots of the results (Ο2 and ΟΛ 2) obtained from creo/mechanism and compare them to results of problem#2 and problem#3. note that you should do these comparisons for the two cases with Ξ± = {10,30}deg. 5. (2 points) provide a brief explanation of the results. did they match? what are the implications as misalignment angle increases?
Answers: 3
Physics, 22.06.2019 09:50
If an athlete runs once around a track, back to the starting line, her average velocity is zero. true or false?
Answers: 3
Physics, 22.06.2019 11:30
Two 1.20-m nonconducting wires meet at a right angle. one segment carries + 2.50 Β΅c of charge distributed uniformly along its length, and the other carries - 2.50 Β΅c distributed uniformly along it, as shown in fig. 21.50. ( a. find the magnitude and direction of the electric field these wires produce at point p, which is 60.0 cm from each wire. ( b. if an electron is released at p, what are the magnitude and direction of the net force that these wires exert on it?
Answers: 3
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A jet of steam at 100β is directed for a short time on to a large block of ice at 0β....
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