The NOT gate is often referred to as a(n) ____________________.
What will be an ideal response?
inverter
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The AC component that causes the pulsating voltage is called the ____.
A. vibration B. oscillator C. wave D. ripple
In a group of animals, dominant and subordinate members share food equally
Indicate whether the statement is true or false
The conversion of cyclobutane to ethylene
is a first-order reaction. This means that the concentration of cyclobutane at time t is given by lnC=ln
?kt, where C is the concentration at time t,
is the initial concentration, t is the time since the reaction started, and k is the rate constant. Assume that
=0.2 mol/L with negligible uncertainty. After 300 seconds at a constant temperature, the
concentration is measured to be C=0.174 ± 0.005 mol/L. Assume that time can be measured with negligible uncertainty.
a. Estimate the rate constant k, and find the uncertainty in the estimate. The units of k will be .
b. Find the relative uncertainty in k.
c. The half-life of the reaction is the time it takes for the concentration to be reduced to one-half its initial value. The half-life is related to the rate constant by
=(ln 2)/k. Using the result found in part (a), find the uncertainty in the half-life.
d. Find the relative uncertainty in the half-life.
The most important function of freehand sketching is _____.
A. detail B. construction C. communication D. layout