What is the average velocity between t=0 sec and t=5 sec? 25 m/sec correct: your answer is correct. (b) what is the acceleration between t=0 sec and t=5 sec? 25 m/sec/sec incorrect: your answer is incorrect. (c) what is the average velocity between t=5 sec and t=8 sec? 20 m/sec incorrect: your answer is incorrect. (d) what is the acceleration between t=5 sec and t=8 sec? (e) what is the average velocity after t=8 sec? 0 m/sec correct: your answer is correct. (f) what is the acceleration after t=8 sec? 0 m/sec/sec correct: your answer is correct. (g) what is the total displacement during these ten seconds? 60 m correct: your answer is correct. (h) what is the total distance traveled during these ten seconds? 190 m correct: your answer is correct. (i) what is the average velocity during these ten seconds? 6 m/sec correct: your answer is correct. (j) what is the average speed during these ten seconds?

Asuppose a suitcase has a mass of (m) 30 kg and a net force (n) of 10 kg*m/s. what is the acceleration rate of the suitcasein m/s? show your work to support your answer.

An internally reversible refrigerator has a modified coefficient of performance accounting for realistic heat transfer processes of where qin is the refrigerator cooling rate, qout is the heat rejection rate, and is the power input. show that copm can be expressed in terms of the reservoir temperatures tc and th, the cold and hot thermal resistances rt, c and rt, h, and qin, as where rtot rt, c rt, h. also, show that the power input may be expressed as 1.39 a household refrigerator operates with cold- and hot-temperature reservoirs of tc 5 c and th 25 c, respectively. when new, the cold and hot side resistances are rc, n 0.05 k/w and rh, n 0.04 k/w, respectively. over time, dust accumulates on the refrigerator’s condenser coil, which is located behind the refrigerator, increasing the hot side resistance to rh, d 0.1 k/w. it is desired to have a refrigerator cooling rate of qin 750 w. using the results of problem 1.38, determine the modified coefficient of performance and the required power input w under (a) clean and (b) dusty coil conditions. internally reversible refrigerator qout qin w high-temperature reservoir low-temperature reservoir th th, i tc, i tc high-temperature side resistance low-temperature side resistance w qin th tc qinrtot tc qinrtot copm tc qinrtot th tc

Does anyone know how to solve this problem? i really need . i made an attempt but i just cant get it. a metal rod is 25.000 cm long at 25.0 degrees celsius. when heated to 102.0 degrees celsius, it is 25.054 cm long. what is the coefficient of linear expansion for this metal.