Answer:
The initial velocity is 12.34[m/s]
Explanation:
To understand this problem, let's draw a sketch of what is happening. In the attached image we can fin de sketch.
According to the equations of uniform movement accelerated we have to express them in the two components x and y.
In this problem we will analyze first the movement in the y axis and its equation to obtain the velocity in the initial point (o) and then with the angle of 33° respect to the horizontal we can find the main velocity.
In the previous equation we have the negative term - (2*a*y), the reason for the negative sign is because gravity is the acceleration that is acting downwards.
Therefore:
Now with the velocity in the y component, we can calculate the main vector of the velocity.
The main topic to understand in this problem is that when the height is maximum the velocity will be zero in the y component, therefore Vy=0 and we can simplify the problem.
The correct answer is Upthrust= 0.7N and Volume = 1.02 x 10⁻² g
Solid weighs.09 N in air.
Solid weighs less than liquid because of an upward force operating on it (solid weighs in liquid =.02 N).
A solid body experiences an upthrust when it is partially or entirely submerged in a fluid, such as water. In this case, the fluid's weight (water) equals the fluid's weight that the water has displaced.
upthrust is = to.09 -.02 N = 0.7N.
Upthrust = displaced liquid's weight
so that weight of liquid equal to volume of solid = 0.7 N
Volume of solid times mass of liquid = 0.07/9.8 = 0.00714 = 7.14 x 10⁻³ kg
Volume = Mass / density
Volume = 7.14 x 10⁻³ / 700
= 1.02 x 10⁻⁵ kg= 1.02 x 10⁻² g
To learn more about upthrust refer the link:
brainly.com/question/24383048
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Answer:
Airplane cabins are pressurized because as the airplane climbs higher in altitude, the air becomes very thin, this pressurization ensures that there is still enough breathable oxygen in the cabin to prevent everyone from suffering the effects of hypoxia and passing out.
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So sometimes when you actually do you work it’s happens and you get answers idk about that
Answer: 5.5 mass
Explanation: The force of gravity pulling the car up the hill = 5.5