The position of a particle is given as r = (4t2 i – 2t j) m.  Determine the particle’s acceleration.

A particle is moving with an initial velocity of v = 12 ft/s and constant acceleration of 3.78 ft/s2 in the same direction as the velocity.   Determine the distance the particle has traveled when the velocity reaches 30 ft/s.

A 10 kg sack slides down a smooth surface. If the normal force on the surface at the flat spot, A, is 98.1 N (up), radius of curvature is  ___________.

The path of a particle is defined by y = 0.5×2.  If the component of its velocity along the x-axis at x = 2 m is  vx = 1 m/s, its velocity component along the y-axis at this position is

A is given by the following expression: A2 = (cf)/(x2 – cy) Let: c = 8, f = x/2, and y = 3x.  The MATLAB code for the variables x, c, f, and y are given here: x = 2.0 : 0.1 : 6.0;c = 8;f = x / 2;y = 3 * x; Which of the following is a correct equation to calculate A in MATLAB syntax?

What is this Chinese character : 人？

There are _________ different kinds of Chinese characters.  

Assuming complete dominance will occur, the offspring of the cross Aa x Aa will show a phenotypic ratio of                      

What is the expected genotypic ratio resulting from a heterozygous X heterozygous cross?  

Trailing zeros are significant if a  _______ is included.