Actually, it's A... Just now Got a perfect score on this test.
Answer:
divide the mass value by 1e+8
Answer:
d. The buoyant force on the rock is constant as it sinks.
Explanation:
The sinking of an object in water can be explained by the Archimedes Principle.
The Archimedes principle states that the buoyant force on a submerged substance is equal to the water displaced by the submerging object. The buoyant force, however, does not change with depth as the substance sinks.
In the given question, when the rock moves beneath the pool, the buoyant force do not change and remains the same that is the amount of water displaced by rock remains the same.
Thus, Option-D is the correct answer.
Answer:
The fire hose be located 59.80 m away to hit the highest possible fire.
Explanation:
Vertical velocity = 25 sin35 = 14.34 m/s
Acceleration = -9.81m/s²
At maximum height , final vertical velocity = 0 m/s
We have v = u + at
Substituting
0 = 14.34 - 9.81 x t
t = 1.46 s
Time of flight of water = 2 x 1.46 = 2.92 s
Horizontal velocity = 25 cos35 = 20.48 m/s
Horizontal displacement = 20.48 x 2.92 = 59.80 m
So, the fire hose be located 59.80 m away to hit the highest possible fire.
Answer:
Well if they playing a game like that
