Hector uses the apparatus below to separate a mixture.
how do the substances compare?
substance 1 has a lower density than substance 2.
substance 1 has a higher density than substance 2.
substance 1 has a lower boiling point than substance 2.
substance 1 has a higher boiling point than substance 2.
substance 2
substance 1

The x-coordinate of a particle in curvilinear motion is given by x = 3.1t3 - 4.9t where x is in feet and t is in seconds. the y-component of acceleration in feet per second squared is given by ay = 2.3t. if the particle has y-components y = 0 and vy = 5.0 ft/sec when t = 0, find the magnitudes of the velocity v and acceleration a when t = 1.8 sec. sketch the path for the first 1.8 seconds of motion, and show the velocity and acceleration vectors for t = 1.8 sec. answers: v = ft/sec a = ft/sec2

If steel is more dense that lake water, why can a boat float

A2000 kg car is rounding a curve of radius 200 m on a level road. the maximum frictional force the road can exert on the tires of the car is 4000 n. what is the highest speed at which the car can round the curve?