Displacement vector is 75 cm long and points at 30° above the +x-axis. Displacement vector is 25 cm long and points along the -x-axis. Displacement vector is 40 cm long and points at 45° below the -x-axis.(a) Determine the x and y components of vector .(b) Determine the x and y components of vector .(c) Determine the x and y components of vector .(d) Determine the x and y components of the resultant of these three vectors.(e) Determine the magnitude and direction of the resultant of these three vectors.

A ball is thrown straight up with a speed of 30 m/s, and air resistance is negligible.(a) How long does it take the ball to reach the maximum height?(b) What is the maximum height reached by the ball?(c) What is its speed after 4.2 s?

Human reaction times are worsened by alcohol. How much further (in feet) would a drunk driver’s car travel before he hits the brakes than a sober driver’s car? Assume that both are initially traveling at 50.0 mi/h and their cars have the same acceleration while slowing down, and that the sober driver takes 0.33 s to hit the brakes in a crisis, while the drunk driver takes 1.0 s to do so. (5280 ft = 1 mi)

The xiphoid process is a reliable positioning landmark for determining the lower margin of the lungs for chest positioning

When using AEC (automatic exposure control) for a PA chest projection, which ionization chamber(s) should be activated?

For a tetrapeptide, there are ____ unique sequences.

Although mutations can change the catalytic efficiency of an enzyme, we are certain that mutations will never alter the ________.

If the Keq of an enzyme-catalyzed reaction is highly favorable, then ________.

For the following amino acid (pK1 = 2.2 (carboxyl); pK2 = 8.6 (amino); pK3 = 10.5 (phenolic hydroxyl), the most abundant form at pH 9 is _______.  

In proteins, R-N–H···O=C-R bonds ________.