Answer:
2.45 m
Explanation:
We are given that
Height,h=0.75 m
Initial velocity,
We have to find the height above his own starting point Ed rises.
Initial kinetic energy of Ed=Final potential energy of Ed
According to law of conservation of momentum
Initial kinetic energy of adolf=Final potential energy of adolf
Substitute the values
The angular velcoity of this cylinder when the downward speed of the elevator is 1.2 m/s would be 6 rad/s.
<u>Given the following data:</u>
Radius of cylinder = 0.20 meter.
Linear velocity = 1.2 m/s.
<h3>What is angular velocity?</h3>
Angular velocity can be defined as the rate of change of angular displacement of an object with respect to time. Thus, it is a measure of how fast and quickly an object revolves or rotates relative to another point or how its angular position changes with respect to time.
<h3>The formula for angular velcoity.</h3>
Mathematically, angular velcoity is given by this formula:
Substituting the given parameters into the formula, we have;
Angular velocity = 6 rad/s.
Read more on angular velcoity here: brainly.com/question/6860269
Answer:
31 m/s
Explanation:
As both the monkey and the darts are subjected to constant gravitational acceleration g = 9.8 m/s2 and both start from rest (vertically speaking). Their vertical position will always be the same. For the dart to hit the monkey, its horizontal position must be the same as the monkey's, which is unchanged before reaching the ground. Therefore, the time it takes for the dart to travel across 70 m must be less than the time it takes for the monkey to drop 25m to the ground. We can find it out using the following equation of motion
For the dart to takes less that 2.26 s to travel 70m, its horizontal speed must at least be 70 / 2.26 = 31 m/s
The answer is; The cloud is cool and lies between you and a hot star.
Absorption lines occur when the electrons of an atom absorb energy through a specific wavelength of light and the electrons ‘jumps’ from a lower energy level to a higher energy level. Absorption lines are viewed as black lines in a continuous spectrum