When a hydrogen atom is in its ground state, what are the shortest and longest wavelengths of the photons it can absorb without being ionized?

Write one of the following terms that best describes each number: natural number, whole number, integer, terminating decimal, repeating decimal, fraction, or mixed number. If a number is not rational, write not rational. $3 \frac { 1 } { 2 }$

An Einstein (E) is a unit of measurement equal to Avogadro's number $\left(6.02 \cdot 10^{23}\right)$ of photons. How much energy is contained in 1 Einstein of violet light $(\lambda=400 . \mathrm{nm})$ ?

X-rays of wavelength $\lambda=0.140 \mathrm{~nm}$ are scattered from carbon. What is the expected Compton wavelength shift for photons detected at angles (relative to the incident beam) of exactly $180^{\circ}$ ?

Let p and q represent the following simple statements: p: This is an alligator. q: This is a reptile. Write each compound statement in symbolic form. Being a reptile is necessary for being an alligator.

How many photons of light are emitted when the electron in a hydrogen atom drops from energy level 4 to 1?

(a) 1
(b) 2
(c) 3
(d) 4
(e) none of the above

Let p and q represent the following simple statements: p: Romeo loves Juliet. q: Juliet loves Romeo. Write each symbolic statement in words. $\sim q \vee p$

What type of radiation is a very energetic form of photons?

(a) alpha
(b) beta
(c) gamma
(d) positron

Suppose a starship had a mass of $1.25 \times 10^{9}\ \mathrm{kg}$ and was initially at rest. If its "matter-antimatter engines" produced photons from electron-positron annihilation and focused them to travel backward out from the ship, how many photons would they have to emit to reach 0.100% of the speed of light?

Using p and q below, write the symbolic statement in words. p : Points X, Y, and Z are collinear. q : Points X, Y, and Z lie on the same line. $p \leftrightarrow q$

Calculate the energies of photons related to the two lines using the relationships expressed in the following equations. $E_{\text {photon }}=h v ; c=\lambda v ; E=h c / \lambda$

The average power generated by the Sun has the value $3.74 \times 10^{26} \mathrm{W}$ Assuming the average wavelength of the Sun’s radiation to be 500 nm, find the number of photons emitted by the Sun in 1 s.

a. Write each statement in symbolic form. Assign letters to simple statements that are not negated. b. Construct a truth table for the symbolic statement in part (a). c. Use the truth table to indicate one set of conditions that makes the compound statement true, or state that no such conditions exist. It is not true that I bought a meal ticket and did not use it.

Because a given element’s atoms emit only certain___ photons of light, only certain are occurring in those particular atoms.