Answer:
D)535.024N
Explanation:
Hello! The most important thing to solve this exercise is to make a good free body diagram of the sled on the hill, our coordinate system is aligned with the slope while the direction of the weight force will always go down, then divide the weight vector into components and we found Wy, I attached the drawing!
Wy=mgcos24
Wy=(59.7)(9.81)(cos24)=535.024N
Answer:
C) scientist use experiments to test their ideas
Answer:
The water will rise to a height, H = 10.20 m
Given:
Atmospheric Pressure, P =
density of water,
Solution:
The water in the tube will rise to the point where the weight is balanced by the force as a result of the atmospheric pressure.
Therefore,
Pressure, P =
where
g = acceleration due to gravity = 9.8 m/s
H = height of water in the tube
Now,
Putting the values in the above formula:
H = 10.20 m
Answer:
The object must be equally buoyant with the surrounding fluid
is an untrue statement - because the object could not float - it could be anywhere in the fluid
If we start taking into account the free body diagram, we then start damping motion of a body by means of this equation:
<span>m * d^2 x/dt^2 + c* dx/dt + k* x = 0 </span>
<span>free undamped motion is when (c =0) </span>
<span>therefore </span>
<span>50* d^2 x/dt^2 + 200* x = 0 </span>
<span>w = omega = sqrt(k/m) = sqrt(200/50) = 2 </span>
<span>Then </span>
<span>A*cos(w*t) + B*sin(w*t) = x </span>
<span>find A and B using intial conditions and you will get the rest that you need. Hope this helps</span>