The reason that oscillating systems are good to use for clocks is:
A. The period of an oscillation does not depend upon amplitude.
B. Real mass-spring systems are frictionless and energy is perfectly conserved.
C. The frequency of an oscillator does not depend on mass.
D. The frequency of an oscillator does not depend on the strength of the spring.
E. Oscillators are efficient at turning motion into heat.

Consider each of the electric- and magnetic-field orientations given next. in each case, what is the direction of propagation of the wave? a)\vec ein the +xdirection,\vec bin the +ydirection. choose+ x direction- x direction+ y direction- y direction+ z direction- z direction b)\vec ein the -y direction,\vec bin the +x choose+ x direction- x direction+ y direction- y direction+ z direction- z direction c)\vec ein the +z direction,\vec bin the -x direction. choose+ x direction- x direction+ y direction- y direction+ z direction- z direction d)\vec ein the +y direction,\vec bin the -z direction. choose+ x direction- x direction+ y direction- y direction+ z direction- z direction

Which type of energy is transferred by convection currents?

What is the percent yield of titanium (iv0 oxide, if 10.2 are formed when 25.7g of titanium (iv0 chloride react?