Anetwork engineer is subnetting the 10.0.240.0/20 network into smaller subnets. each new subnet will contain between a minimum of 20 hosts and a maximum of 30 hosts. which subnet mask will meet these requirements?

a. 255.255.224.0

b. 255.255.240.0

c. 255.255.255.224

d. 255.255.255.240

Achemistry student needs of 40ml diethylamine for an experiment. by consulting the crc handbook of chemistry and physics, the student discovers that the density of diethylamine is 0.7 . calculate the mass of diethylamine the student should weigh out. round your answer to significant digits.

You have a pick-up truck that weighed 4,000 pounds when it was new. you are modifying it to increase its ground clearance. when you are finished

Asailboat is traveling to the right when a gust of wind causes the boat to accelerate leftward at 2.5m/s2 for 4s. after the wind stops, the sailboat is traveling to the left with a velocity of 3.0m/s.assuming the acceleration from the wind is constant, what was the initial velocity of the sailboat before the gust of wind? answer using a coordinate system where rightward is positive.