Answer:
Explanation:
140m
Explanation:
The velocity must be broken down into x (horizontal) and y (vertical) components. We can use the y component to find how high the object gets. To find vertical velocity, vy, use vy=vosinθ.
vy=(75ms)sin45o=53ms
Next we find how long it takes to reach the top of its trajectory using vf=vo+at.
0ms=53ms+(−10ms2)t
t = 5.3s
Finally, find how high the object goes with d=vot+12at2.
d=(53ms)5.3s+12(−10ms2)(5.3s)2=140m
Answer:
Explanation:
Look at the equation for Potential Energy. PE = mass times gravity times the height. Filling in and solving for h:
34.3 = .5(9.8)h so
34.3 = 4.9h so
h = 7 meters
The buoyant force is equal to the weight of the volume of fluid displaced by the solid immersed into it, and it is equal to:
where
is the density of the fluid
is the volume of the part of the solid immersed in the fluid
g is the gravitational acceleration
We see that the greater the density of the fluid, the greater the buoyant force that pushes the object upward. When the object floats in the fluid, the buoyant force is equal to the weight of the object, mg:
(1)
and since the mass of the solid is equal to the product between its density and its volume:
we can rewrite (1) as
where
is the density of the object and
is its total volume. So the fraction of the object immersed in the fluid is
Answer:
Easy, click on the icon and it's going to appear edit profile!
Explanation:
Than look on last option,