Answer:
(C) length / height of the plane
Explanation:
The mechanical advantage of an inclined plane can be determined using different variables. In this case, the geometry of the setup is relevant. The advantage is proportional to the length of the plane, and inversely proportional to the height: it is the ratio (length) / (height) of the plane. For example, given a desired, fixed height, a long inclined plane gives you a bigger mechanical advantage than a short inclined plane. In this example, pushing an object up the long plane will require a smaller force, than it would on the short plane.
Strictly speaking, (D) would also "allow you to determine the mechanical advantage" because you could simply invert the ratio listed under (D). However, (C) is the best, direct, answer.
Answer:

Explanation:
The collision is inelastic and can be described by the Principle of Momentum Conservation:

The speed after the collision is:

If gravity did not affect the path of a horizontally thrown ball the ball would eventually slow due to air resistance. If the ball were somehow thrown in a vacuum devoid of gravity and air, it would technically continue in a straight line forever.
Answer:
The resulting magnetic field is 5.021 x 10⁻⁵ T
Explanation:
Given;
current in the lightening bolt, I = 11800 A
distance from the bolt, r = 47 m
permeability of free space, μ₀ = 1.25664 × 10⁻⁶ T· m/A
Assume lightening bolt as long straight conductor, then the resulting magnetic field will be calculated as follows;

where;
B is the resulting magnetic field
I is the current in the bolt
r is the distance from the bolt
Substitute the given values and calculate B

Thus, the resulting magnetic field is 5.021 x 10⁻⁵ T
Answer:
2NaOH+H2SO4 Na2SO4+H2O the equation is balanced/unbalanced because the number of hydrogen atoms and oxygen/sodium is equal/not equal in the reactants and in the products.
Explanation: