The equation of a transverse wave is y(x, t) = 0.02 cos(10(pi)x - 400(pi)t)
where the units are SI. The velocity of the wave is
a. 0.20(pi)m/s
b. 8(pi)m/s
C. 40 m/s
d. 0.20 km/s
e. 0.40(pi)km/s

Aball is thrown upward in the air, and its height above the ground after t seconds is h ( t ) = 57 t − 16 t 2 feet. find the time t when the ball will be traveling upward at 14.25 feet per second.

When applying kirchhoff's rules, one of the essential steps is to mark each resistor with plus and minus signs to label how the electric potential changes from one end of the resistor to the other. the circuit in the drawing contains four resistors, each marked with the associated plus and minus signs. however, one resistor is marked incorrectly. which one is it?

True or false when elements combine to form a mixture, the resulting chemical properties may be very different from those of the elements that make it.