An electromagnetic wave has a frequency of 3.0 x 105 hz. what is the
wavelength of the wave? use the equation 2 = and the speed of light as 3.0
x 108 m/s.
o a. 9.0 x 103 m
o b. 9.0x1013 m
o c. 1.0 x 103 m
o d. 1.0 x 1013 m

Waves that cause the most damage during an earthquake are a. surface waves c. s waves b. p waves d. ocean waves

Agroup of students is studying convection currents. they fill two identical balloons with the same amount of helium. one balloon is placed in a freezer and the other in an area with warm air. after 10 minutes, the balloons are released from a height of 1 meter. which of the following do the students most likely observe? question 2 options: the balloons rise at the same rate. both balloons are the same size. the ballons both rise. the cold ballon is larger than the warm balloon. the cold balloon expands and rises. the warm balloon shrinks and sinks. the warm balloon expands and rises. the cold balloon shrinks and sinks.

The uniform slender bar rests on a smooth horizon- tal surface when a force f is applied normal to the bar at point a. point a is observed to have an initial acceleration aa of 20 m/s2, and the bar has a corre- sponding angular acceleration of 18 rad /s2. deter- mine the distance b.