Answer:
to the left
Explanation:
The gravitational force exerted between two objects is given by:
where
G is the gravitational constant
m1, m2 are the masses of the two objects
r is their separation
And the force is always attractive.
Let's call
the mass on which we are calculating the net force.
The mass on the left is
and it is a distance of
r = 0.500 m
So the gravitational force exerted by this mass on the 10.0 kg mass is
And the direction is to the left.
The other mass is
and its distance is
r = 1.25 m
to the right, so the force exerted by this other mass on the 10.0 kg mass is
And the direction is to the right.
Now, to find the net force, we just have to calculate the algebraic sum, taking into account that the two forces have different directions; taking right as positive direction, the net force is:
And the negative sign means the direction of the net force is to the left.
I think it’s [ C ] because it not to high and it doesn’t have a lot of waves like the rest.
I hope this help sorry it it wrong but that’s what I think c:
Answer:
The wood's potential energy on the carpenter's shoulder is 150 J.
Explanation:
Given;
mass of the wood, m = 10 kg
height through which the wood was raised, h = 1.5 m
acceleration due to gravity, g = 10 m/s²
The wood's potential energy on the carpenter's shoulder is calculated as;
P.E = mgh
P.E = 10 x 10 x 1.5
P.E = 150 J
Therefore, the wood's potential energy on the carpenter's shoulder is 150 J.
Answer:
8.0 seconds
Explanation:
Remember: at the highest point, the ball's velocity is 0.
Given:
Δy = 80 m
v = 0 m/s
a = -9.8 m/s²
Find: t
Δy = vt − ½ at²
(80 m) = (0 m/s) t − ½ (-9.8 m/s²) t²
t = 4.0 s
It takes 4.0 seconds for the ball to reach the highest point. So the ball spends a total of 8.0 seconds in the air.