Answer:
B. X is the answer, hope it helps
Explanation:
The second choice is the correct one.
You can spot it just from the units. An equation can't be true unless it has the same units on both sides.
Wavelength has units of (meters).
Frequency has units of (per second).
When you multiply them, you get (meters per second), the unit of speed, and the 'c' on the other side is speed.
None of the other choices has units of speed on the right side.
Answer:
Change in momentum = 60kgm/s.
Explanation:
<u>Given the following data;</u>
Mass, m = 12kg
Initial velocity, u = 9m/s
Final velocity, v = 14m/s
Momentum can be defined as the multiplication (product) of the mass possessed by an object and its velocity. Momentum is considered to be a vector quantity because it has both magnitude and direction.
Mathematically, momentum is given by the formula;
To find the change in momentum;
Mathematically, change in momentum is given by the formula
Substituting into the equation, we have;
<em>Change in momentum = 60kgm/s.</em>
The anwser is 1.475124 horsepower.