A plane needs to reach a velocity of 250 kilometers per hour to take off and leave the runway. If the wind is blowing in the direction of takeoff at a velocity of 20 kilometers per hour, what velocity must the plane reach in order to take off? a. 12.5 hours b. 230 kilometers per hour c.270 kilometers per hour d.500 kilometers ​

Which transition by an electron will release the greatest amount of energy? oa ob oc od

Question 11 of 13 (1 point) jump to question: a stairway, ladder, or ramp must be present in excavations in which of the following situations? a. all trenches must have access/egress b. the trench is more than 15 feet wide but only 1 ½ feet deep c. the trench is more than 4 feet deep and the devices must be within 25 feet of all workers

Need people build a dam to create a reservoir that supplies water a nearby city needs. describe two ways this action will likely affect the water cycle in the local environment. (5 points) worth 20 points