Select the correct answer
a train moving at a constant speed on a surface indined upward at 100 with the horizontal traves a distance of 400 meters in 5 seconds.
calculate the vertical velocity component of the train during this time period
a 41.10 meters second
b 19.23 meters second
c 13.39 metersisecond
d. 41.70 meters/second
e 78.78 metersisecond

Ais useful when you need a simple machine to you separate two things. a. lever b. screw c. pulley d. wedge

Anika asks eva to roll a basketball and then a bowling ball to her. which requires more force to roll, and why?

An ideal otto cycle has a compression ratio of 8. at the beginning of the compression process, air is at 95 kpa and 27°c, and 750 kj/kg of heat is transferred to air during the constant-volume heat-addition process. assuming constant specific heats at room temperature, determine (a) the pressure and temperature at the end of the heat-addition process, (b) the net work output, (c) the thermal efficiency, and (d) the mean effective pressure for the cycle. (4390 kpa, 1730 k; 423 kj/kg; 56.4%; 534 kpa)