Which does the big bang theory describe? a cool, dark singularity the origin of the universe the contraction of the universe an explosion at the beginning of time

S-waves can travel through solid, liquids, and gases. True False

Ultraviolet light waves carry more energy than infrared light waves. True False

As they move through space, the vibrating electrical and magnetic fields of a light wave must move perpendicular to each other. False True

Which is the constructive interference formula for diffraction grating problems? $dsin\Theta =(n+\frac {1}{2})\lambda $ $dcos\Theta =(n+\frac {1}{2})\lambda $ $dcos\Theta =n\lambda $ $dsin\Theta =n\lambda $

The hot water bottle is an example of a Local dry heat application Generalized dry heat application Local moist heat application Generalized moist heat application

Einstein's concept of gravity involves a mass. b space. C time. d all of the above

The strongest force causing tides on Earth is the __ Sun's gravitational pull Moon's gravitational pull Electromagnetic attractior between Earth and Sun Gravitational attraction between ocean waters and the continents on Earth

The force of a boxer's punch is greater when it hits a small punching bag. heavy punching bag. both forces would be the same for the same effort

6. A train is moving at $23m/s$ due east when it sounds a blast on its horn, $frequency=164Hz$ What frequency is heard by the driver of a car moving due east at $15m/s$ along a road parallel to the tracks? Use $343m/s$ for the speed of sound Please show all work.(ref: p $410-417$ $v=343m/s$ $vs=23m/s(train,east)$ $vo=15m/s(car,east)$ $fs=164Hz$

A planet's average distance from the sun is equal to the: Major axis None of these answers is correct. Semimajor axis Distance between the foci of an ellipse Diameter of the ellipse