Salmon often jump waterfalls to reach their breeding grounds. one salmon starts 2m from a waterfall that is 0.55m tall and jumps at an angle of 32°. what must be the salmon's minimum speed to reach the waterfall?

Use the profile illustrated for problem (1). assume that the layer of silty sand fill (sm) is placed over the entire site. estimate the thickness of the fill (h - in feet) that will cause the effective vertical stress at the center of the clay layer to increase by 517.5 pounds per square foot.

Acamcorder has a power rating of 20 watts. if the output voltage from its battery is 9 volts, what current does it use?

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