Constellations are close clusters of stars, all at about the same distance from the Sun
Indicate whether the statement is true or false
FALSE
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An object weighing 44.1 N hangs from a vertical massless ideal spring. When set in vertical motion, the object obeys the equation y(t) = (6.20 cm) cos[(2.74 rad/s)t - 1.40]
(a) Find the time for this object to vibrate one complete cycle. (b) What are the maximum speed and maximum acceleration of the object. (c) What is the TOTAL distance the object moves through in one cycle. (d) Find the maximum kinetic energy of the object. (e) What is the spring constant of the spring.
The ionization energy of the hydrogen atom is 13.6 eV. What is the wavelength of a photon having this much energy? (h = 6.63 × 10^-34 J×s, c = 3.00 × 10^8 m/s, 1 eV = 1.6 × 10^-19 J, and 1 nm = 10-9 m)
a. 91.4 nm c. 136 nm b. 360 nm d. 273 nm
Which force field can increase a moving electron's speed?
A) electric field B) magnetic field C) both of these D) neither of these
Why is M-42, the Orion Nebula, so important to us?
What will be an ideal response?