Chemical and physic - Study guides, Class notes & Summaries

What expression gives the amount of light energy (in J per photon) that is converted to other forms between the fluorescence excitation and emission events? A. (6.62 × 10-34) × (3.0 × 108) B. (6.62 × 10-34) × (3.0 × 108) × (360 × 10-9) C. (6.62 × 10-34) × (3.0 × 108) × [1 / (360 × 10-9) - 1 / (440 × 10-9)] D. (6.62 × 10-34) × (3.0 × 108) / (440 × 10-9) Solution: The correct answer is C. This is a Physics question that falls under the content category "How light and s...

(k = 8.988 x 109 N-m 2/C 2) correct answers where k is Coulomb's constant (e = 1.6 X 10~19 C) correct answers The smallest possible unit of charge is one electron unit An electric field is defined as the electrostatic force per unit charge. The symbol for any electric field is E and is vector and have units of N /C or V/m correct answers what is E E=kq/r^2 correct answers For a point charge, the electric field is found by dividing Coulomb's law by q, giving: F=qE correct answer...

What does the term force describe? correct answers an outside influence on an object. What is a frame of reference? correct answers means that if the placement of one object is known, it is easier to locate another object with respect to the position of the original object. What is speed a measurement of? correct answers an objects movement or change in position (x), over a change in time (t). What is the measurement of speed with direction called? correct answers velocity What is th...

1. An Introduction to the Human Body 1. is the study of the larger structures of the body, those visible without the aid of magnification (A) Gross anatomy (B) Microscopic anatomy (C) Macroscopic anatomy (D) Physical anatomy Ans A Diff Easy Page 8 2. The word “anatomy” comes from a Greek root that means “ ’’ (A) To cut apart (B) To fix with (C) To view inside (D) To study exterior Ans A Diff Easy Page 8 3. Dissection is still used in …………. (A) Medical schools (B)...

Average velocity correct answers v=Δx/Δt unit: m/s Acceleration correct answers a=Δv/Δt unit: m/s^2 Linear motion correct answers vf=vi+at Δx=vit+1/2at^2 vf^2=vi^2+2aΔx Projectile Motion correct answers Vertical component of velocity vsinθ Horizontal component of velocity vcosθ Static friction correct answers The force that must be overcome to set an object into motion Fs ≤ μs η Kinetic Friction correct answers Opposes the motion of objects moving relative to eac...

What does a vector measure? correct answers magnitude/size and direction What do scalars measure? correct answers Magnitude/size What is distance? correct answers how far something has traveled What is speed? correct answers how fast something is going What is velocity? correct answers how fast something is going in a certain direction (Displacement/time) What is a vector sum? correct answers addition if vectors together What is the rate of speed? correct answers distance over ...

PASSAGE: Wavelength: 266 and 325 Power (mW): 1.5 and 2.2 Pulse duration (ms): 5 and 2 Which laser is suitable for the MALDI technique after its frequency is doubled? A. Laser A: wavelength 826 nm, power 1.2 mW B. Laser B: wavelength 714 nm, power 1.2 mW C. Laser C: wavelength 650 nm, power 1.5 mW D. Laser D: wavelength 532 nm, power 1.5 mW correct answers The answer to this question is D because the wavelength must be either 266 nm or 325 nm, and by doubling the frequency of the laser...

Cytochrome c oxidase correct answers An enzyme responsible for electron transfer in the ETC, so inhibiting it would slow or stop the ETC. Dosing of Blast Phase Chronic Myeloid Leukemia (BP-CML) cells with cyanide would result in: correct answers Reduced intercellular ATP and apoptosis or necrosis. Cyanide binds to cytochrome c oxidase and prevents electron transfer. Inhibiting cytochrome C oxidase would decrease ATP production. thus, large dose would also cause cell death (apoptosis or ne...

Magnetic fields exert forces on moving __________ particles correct answers Charged Does a photon have a positive, negative, or no charge? correct answers No charge In a chiral center, what happens if the lowest priority group is in the front of the molecule? back? correct answers Front = reverse order direction Back = normal Which direction is R chiral center? S? correct answers R = clockwise S = counterclockwise What is electron affinity? correct answers The amount of energy rele...

Chemical and Physical Foundation of biological Systems Questions with Correct Answers