Answer:
a. Her moment of inertia increases and she rotates slower.
Explanation:
As we know that initially when she starts her motion she is in piked position due to which her whole mass is concentrated near the axis of rotation
So here the rotational Inertia of her body will be smaller
Now when is comes closer to the position of landing she extends into layout position due to which her mass will move away from the axis of rotation
Due to this the rotational inertia of her body will increase
now we know that there is no external torque on the system
so here angular momentum must be conserved
So we will have
so if rotational inertia is increasing then angular speed must be slower
so correct answer will be
a. Her moment of inertia increases and she rotates slower.
Answer:
Mendeleev predicted the atomic mass of each element along with compounds they each should form.
Explanation:
Based on other elements in the same group he predicted the existence of eka-aluminum and eka-silicon, later to be named gallium (Ga) and germanium (Ge).
Answer;
- 15 J
Explanation;
-Potential energy is defined as mechanical energy, stored energy, or energy caused by its position.
-For the gravitational force the formula is P.E. = mgh, where m is the mass in kilograms, g is the acceleration due to gravity (9.8 m /s² at the surface of the earth) and h is the height in meters.
Potential energy of the rabbit at the peak of its height is
PE = (3)(10)(0.5) = 15 J
(around 14.7 but because energy is lost, it is less than that)
<h2><u>Answer:</u></h2>
The simulation kept track of the variables and automatically recorded data on object displacement, velocity, and momentum. If the trials were run on a real track with real gliders, using stopwatches and meter sticks for measurement, the data compared by the following statements:
1. (There would be variables that would be hard to control, leading to less reliable data.)
3. (Meter sticks may lack precision or may be read incorrectly.)
4. (Real glider data may vary since real collisions may involve loss of energy.)
5. (Human error in recording or plotting the data could be a factor.)
