C, planets orbit around the sun because of gravity
Answer:
2.52 ml/s
Explanation:
Unit conversions:
1 mm = 0.001m
70 cm = 0.7 m
Let g = 10m/s2. If the pistol is fired horizontally at first, it did not have an vertical velocity, only horizontal velocity. So g is the only thing that affects the vertical motion of water.
We can calculate the time it takes for the squirts to hit the ground in the following equation of motion:
where h = 0.7 m is the vertical distance, and t is the time it takes, which is what we are solving for:
So the squirts takes 0.374s to hit the ground, and within that time it travels a distance of 1.m horizontally. Neglect air resistance, we can calculate the horizontal velocity:
where s = 1.2 m is the horizontal distance
The cross-section area of the hole is
where r = d/2 = 0.001/2 = 0.0005 m is the radius of the hole
So we can calculate the volume flow rate:
or 2.52 ml/s
Answer: 4.29 m/s
Explanation:
Given
Depth of the well, s = 8.23 m
Time taken to reach the well, t = 0.93 s
Speed of sound = 343 m/s
To solve this, we would be using one of l the laws of motion.
S = ut + 1/2gt², where
S = depth of the well
u = initial speed of toss
g = acceleration due to gravity
t = time taken to reach the well
We would then have
8.23 = 0.93 u + 1/2 * 9.8 * 0.93²
8.23 = 0.93 u + 4.9 * 0.8649
8.23 = 0.93 u + 4.23801
0.93 u = 8.23 - 4.23801
0.93 u = 3.99199
u = 3.99199 / 0.93
u = 4.29 m/s
Therefore, the initial speed of the coin is 4.29 m/s
It’s a total of 16 cm because it starts at 0 moves then moves to left then the right then the left
The magma cools very slowly so that the crystals of different minerals have time to grow. The magma molecules in have time to organize themselves into crystal formations before the magma hardens. The naked eye helps the Intrusive rocks that has large crystals be seen.