SECTION 1.7 COORDINATE SYSTEMS 35. A point is located in a polar coordinate system by the
coordinates r = 2.5 m and 0 = 35°. Find the x- and y-
coordinates of this point, assuming that the two coordi-
nate systems have the same origin.

Find the momentum for a 2.6-kg brick parachuting straight downward at a constant speed of 8.4 m/s .

Athin, square metal plate measures 14 cm on each side and has emissivity of 0.60. the plate is heated to a temperature of 745°c. what is the rate at which the plate radiates energy ? the stefan-boltzmann constant is 5.67 × 10-8 w/(m2 ? k4). remember that the plate will radiate energy from both its top and bottom surfaces.

Which units can be used to measure length or distance? check all that apply. gram meter kilometer liter inch