Electromagnetic waves are
a. longitudinal.
b. reverse.
c. transverse.
d. a combination of these.
c
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A star's ________ parallax is found by using the spectral lines to estimate the spectral class and luminosity of distant stars
Fill in the blank(s) with correct word
Different units can be used for length: m and cm, and of these two, m is the larger by a factor of 100 . Different units can also be used for R: (1) J/mol/K, (2) L/atm/mol/K, and (3) (N/m2)/m3/mol/K. Which of these units for R is the largest? Hint: When expressing R in each of these units, which expression has the lowest numerical factor? (1 L = 10?3 m3, 1 atm = 1.01 × 10^5 Pa)
a. 1 b. 2 c. 3 d. They are all equal.
A mass of 5 kg is released from rest on a smooth incline making an angle of 37° to the horizontal. The tangential component of acceleration is closest to:
1.10 m/s²
2.8 m/s²
3.6 m/s²
4.4 m/s²
5.2 m/s²
6.0 m/s²
7.Exactly halfway between 2 of the above answers
8.The negative of one of the answers above
9.It is impossible to determine the tangential component of the block's acceleration
10.I do not know what is meant by "tangential" in this situation
An air conditioning unit is vibrating in simple harmonic motion with a period of 0.27 s and a range (from the maximum in one direction to the maximum in the other) of 3.0 cm. At t = 0 it is at its central position and moving in the +x direction
What is its position when t = 55 s? A) x = -0.430 cm B) x = -0.511 cm C) x = 0.511 cm D) x = -1.41 cm E) x = -1.44 cm