1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Mrrafil [7]
3 years ago
9

Consider a pendulum swinging. Which type(s) of energy is/are associated with the pendulum in the following instances: i. the mom

ent at which it completes one cycle, just before it begins to fall back towards the other end, ii. the moment that it is in the middle between the two ends, and iii. just before it reaches the end of one cycle (just before instant i.).1. i. potential and kinetic, ii. potential and kinetic, iii. kinetic2. i. potential, ii. potential and kinetic, iii. potential and kinetic3. i. potential, ii. kinetic, iii. potential and kinetic4. i. potential and kinetic, ii. kinetic iii. kinetic
Biology
1 answer:
kiruha [24]3 years ago
6 0

Answer:

The mechanical energy of a pendulum is the sum of two types of energy:

- The kinetic energy (KE), which is the energy associated to the motion of the pendulum, and which is given by

KE=\frac{1}{2}mv^2

where m is the mass of the pendulum and v its speed;

- The potential energy (PE), which is the energy associated to the position of the pendulum, and which is given by

PE=mgh

where g is the acceleration due to gravity and h the height of the pendulum, relative to its equilibrium position

The mechanical energy is the sum of these two values:

E = KE + PE

And neglecting air resistance, the pendulum is an isolated system, so the mechanical energy remains constant:

E=const.

This means that the energy continuously converts from kinetic energy and potential energy, and viceversa.

In particular, at the following moments we have:

i. the moment at which it completes one cycle, just before it begins to fall back towards the other end --> potential

In fact, in this position the speed is zero, so the kinetic energy is zero.

ii. the moment that it is in the middle between the two ends --> kinetic

In fact, in this position the height of the pendulum is zero, so the potential energy is zero.

iii. just before it reaches the end of one cycle (just before instant i --> kinetic and potential

In fact, here the pendulum has not reached yet its maximum height: so, it is still in motion, therefore it still has kinetic energy and potential energy.

You might be interested in
Sister chromatids separate during<br> O metaphase<br> O anaphase<br> O telophase<br> O prophase
lord [1]
Anaphase is the answer. In metaphase the chromatids line up next to each other and the spindle attaches to the centroid. In anaphase, the chromatids are pulled apart into opposing sides of the cell by the spindle fiber
6 0
2 years ago
Read 2 more answers
Please answer fast I,m in a hurry... In the skeletal system What parts of the system process the input?
bazaltina [42]
Http://www.livescience.com/22537-skeletal-system.html
5 0
2 years ago
An organism is prokaryotic, unicellular, and autotrophic, and it also causes disease. Which kingdom does it belong in?
dolphi86 [110]

Answer:

Eubacteria Kingdom

Explanation:

pls brainlyest

4 0
3 years ago
Read 2 more answers
The entire genetic code consists of ____ codons.
frozen [14]
61/3 is the answer for this question
3 0
3 years ago
What is the function of the swim bladder?
marshall27 [118]

Answer:

The swim bladder is located in the body cavity and is derived from an outpocketing of the digestive tube. It contains gas (usually oxygen) and functions as a hydrostatic, or ballast, organ, enabling the fish to maintain its depth without floating upward or sinking.

Explanation:

6 0
3 years ago
Read 2 more answers
Other questions:
  • Describe the weather conditions that characterize the chaparral biome.
    9·1 answer
  • temperature. Imagine that when a bacterial cell carrying such a mutation is shifted from low to high growth temperatures, RNA po
    14·1 answer
  • Which phrase describes the absolute age of a rock?
    13·2 answers
  • State two principles of treatment of a disease
    7·1 answer
  • What are the two major control systems of the body?
    13·1 answer
  • Where is the electron transport chain for cellular respiration located?
    7·2 answers
  • Helo me please :(( i will mark you as the brainlys :D​
    5·1 answer
  • Porque teoría de evolución no está del todo aceptada?
    13·1 answer
  • A plant bending towards a light source is an example of which characteristic of life?
    5·1 answer
  • Keeping in mind that a crayfish is saltier than the fresh water it occupies, and remembering the idea of osmosis, note that the
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!