The apparent brightness of a star depends on how bright it really IS, and also on its distance from Earth. Just like matches, flashlights, and fireflies, stars that are closer to us look brighter to us. (Think about the Sun.)
By definition, a region of space that contains no matter at all is a vacuum.
b) How far will the bomb go over the ground (in the x direction) before it hits the target?
Answer:
(a) t = 4.52 sec
(b) X = 1,156.49 m
Explanation:
Horizontal Launching
If an object is launched horizontally, its initial speed is zero in the y-coordinate and the horizontal component of the velocity remains the same in time. The distance x is computed as.
(a)
The vertical component of the velocity starts from zero and gradually starts to increase due to the acceleration of gravity as follows
This means the vertical height is computed by
Where is the initial height. Our fighter bomber is 100 m high, so we can compute the time the bomb needs to reach the ground by solving the above equation for t knowing h=0
(b)
We now compute the horizontal distance knowing
B) sands.
C) minerals.
D) water crystals.
rocks are made up from the makeup of minerals
so my answer is C.)minerals