Absorb kinetic energy and soften potentially damaging blows.
Nuclear Energy
Energy released by nuclear fission or fusion.
So I think the answer is true.
A ladder 25 feet long is leaning against a house. The base of the ladder is pulled away at a rate of 2 ft/sec.
a.) How fast is the top of the ladder moving down the wall when the base of the ladder is 12 feet from the wall?
Answer:
dy/dt = -1.094ft/sec
Explanation:
Given that:
dz/dt = 0,
dx/dt = 2,
dy/dt = ?
Hence, we have the following
Using Pythagoras theorem
We have 25ft as the hypotenuse, y as the opposite or height of wall, and x as the base of the triangle
X² + y² = z²,
12² + y² = 25²,
y² = 25² - 12²
y = √481
Therefore, we have the following:
2x dx/dt + 2y dy/dt,
= 2z dz/dt,
= 12 (2) √481 dy/dt,
= √481 dy/dt = -24,
= dy/dt = -1.094ft/sec
Therefore, final answer is -1.094ft/sec
1. Displacement = 50 m North. Distance = 150m
Displacement is a vector. Distance is a scalar.
2. Displacement is 100 miles East.
Answer:
(a) 
(b) 
Explanation:
(a) The angular frequency is defined as:
Here f is the frequency of the particle, which is inversely proportional to its period:
Replacing, we have:
(b) The maximum displacement is given by:
