Salmon often jump waterfalls to reach their breeding grounds. Starting downstream, 2.4 m away from a waterfall 0.285 m in height, at what minimum speed must a salmon jumping at an angle of 29.6 ◦ leave the water to continue upstream? The acceleration due to gravity is 9.81 m/s 2 . Answer in units of m/s.

The membrane surrounding a living cell consists of an inner and an outer wall that are separated by a small space. assume that the membrane acts like a parallel plate capacitor in which the effective charge density on the inner and outer walls has a magnitude of 7.0 × 10-6 c/m2. (a) what is the magnitude of the electric field within the cell membrane? (b) find the magnitude of the electric force that would be exerted on a potassium ion (k+; charge = +e) placed inside the membrane.

Determine the maximum r-value of the polar equation r =3+3 cos 0

The difference between a red shift and a blue shift has to do with wavelength frequency. t or f