A projectile is projected from the origin with a velocity of 30.0 m/s at an angle of 40.0 degrees above the horizontal. What is the position vector when the projectile is at the maximum height?
A. X = 45.2 m, Y = 19.0 m
B. X = 21.1 m, Y = 19.0 m
C. X = 51.1 m, Y = 21.1 m
D. X = 45.2 m, Y = 21.1 m
E. X = 19.0 m, Y = 17.5 m
A. X = 45.2 m, Y = 19.0 m
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If a = 3.0 mm, b = 4.0 mm, Q1 = ?60 nC, Q2 = 80 nC, and q = 30 nC in the figure, what is the magnitude of the electric force on q?
a.
1.4 N
b.
1.0 N
c.
1.7 N
d.
2.0 N
e.
0.50 N
From the mass-luminosity relation, a 2-solar-mass star on the main sequence would have a luminosity of approximately ____ solar luminosities
a. 2 b. 4 c. 11 d. 0.5 e. 0.25
Radioactivity Basics: In the radioactive decay equation Po? ?
Po + X, what is X?
Fill in the blank(s) with the appropriate word(s).
The natural tendency of an object to remain at rest or in uniform straight-line motion is called ______________
Fill in the blank(s) with correct word