Which type of star has the widest range in brightness and surface temperature?
a. giant
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Physics, 11.10.2019 02:30 djennings8055
Which type of star has the widest range in brightness and surface temperature?
a. giant
b. white dwarf
c. neutron
d. main sequence
Answers: 2
Physics, 22.06.2019 13:30
Select the three ways that the parallel-plate capacitor differs from a car battery.
Answers: 1
Physics, 22.06.2019 20:20
The base of a 50-meter tower is at the origin; the base of a 50-meter tree is at (0, 50, 0). the ground is flat and the z-axis points upward. the following parametric equations describe the motion of six projectiles each launched at time t = 0 in seconds. (i) r (t) = (50 + t2)k (ii) r (t) = 2t2 j + 2t2k (iii) r (t) = 50 i + 50 j + (50 β t2)k (iv) r (t) = 2t j + (50 β t2)k (v) r (t) = (50 β 2t) i + 2t j + (50 β t)k (vi) r (t) = t i + t j + tk (a) which projectile is launched from the top of the tower and goes downward? at time t = , the projectile hits the ground at point (x, y, z) = . (b) which projectile hits the top of the tree?
Answers: 2
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