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
kykrilka [37]
3 years ago
7

Which would be the best example to demonstrate the principle of conservation of energy? A) a stone is crushed B) light bends aro

und a sharp edge C) a pendulum swings back and forth D) a balloon inflates when air is blown into it
Physics
2 answers:
Gnom [1K]3 years ago
7 0

The correct answer to the question is : C) A pendulum swings back and forth.

EXPLANATION:

Before answering this question, first we have to understand the law of conservation of energy.

As per law of conservation of energy, energy can neither be created not be destroyed. It can only change from one form to another form, and the total energy of the universe is always constant.

As per the question, we have a pendulum which is moving back and forth.

Let us consider a pendulum which is taken to some height from its equilibrium or mean point. The energy possessed by the pendulum at this height is gravitational potential energy. When the pendulum is released, the potential energy is converted into kinetic energy. At mean point, whole of its potential energy is converted into kinetic energy.

Due to inertia, the pendulum reaches at the other extreme point. During its movement from mean point to extreme point, the kinetic energy is converted into potential energy. At extreme point, whole of its kinetic energy must have converted into potential energy. The same process will be repeated.

Hence, it obeys law of conservation of energy.

Hence, swinging of pendulum back and forth is the best example to demonstrate the law of conservation of energy.

Daniel [21]3 years ago
6 0
The answer is a pendulum swings back an forth.
You might be interested in
Which of Newton's laws
Virty [35]

Answer:

Newton's 2nd law think soo

8 0
2 years ago
Read 2 more answers
1.
ale4655 [162]

Answer:

5.0 atm

Explanation:

P₁V₁=P₂V₂

P₁V₁/V₂=P₂

(1)(2.5)/(0•50)=P₂

P₂=5

Pressure is now 5.0 atm

8 0
3 years ago
Scientist have changed the model of the atom.what experimental evidence led them to change from the previous model .
Thepotemich [5.8K]

Rutherford's model of the atom (ESAAQ) Rutherford carried out some experiments which led to a change in ideas around the atom. His new model described the atom as a tiny, dense, positively charged core called a nucleus surrounded by lighter, negatively charged electrons.

7 0
3 years ago
In the middle of a turn, you should _____________________. A. brake hard to maintain complete control over your vehicle B. accel
Elena L [17]

Answer:

D. Downshift to allow you to turn more sharply

3 0
3 years ago
Comets travel around the sun in elliptical orbits with large eccentricities. If a comet has speed 1.6×104 m/s when at a distance
xz_007 [3.2K]

Answer:

v₂ = 7.6 x 10⁴ m/s

Explanation:

given,

speed of comet(v₁) = 1.6 x 10⁴ m/s

distance (d₁)= 2.7 x 10¹¹ m

to find the speed when he is at distance of(d₂) 4.8 × 10¹⁰ m

v₂ = ?

speed of planet can be determine using conservation of energy

K.E₁ + P.E₁ = K.E₂ + P.E₂

\dfrac{1}{2}mv_1^2-\dfrac{GMm}{r_1} = \dfrac{1}{2}mv_2^2-\dfrac{GMm}{r_2}

\dfrac{1}{2}v_1^2-\dfrac{GM}{r_1} = \dfrac{1}{2}v_2^2-\dfrac{GM}{r_2}

v_2^2= v_1^2 + \dfrac{2GM}{r_2}-\dfrac{2GM}{r_1}

v_2= \sqrt{v_1^2 +2GM(\dfrac{1}{r_2}-\dfrac{1}{r_1})}

v_2= \sqrt{(1.6\times 10^4)^2 +2\times 6.67 \times 10^{-11}\times 1.99 \times 10^{30}(\dfrac{1}{4.8\times 10^{10}}-\dfrac{1}{2.7\times 10^{11}})}

v₂ = 7.6 x 10⁴ m/s

3 0
2 years ago
Other questions:
  • What traction of the radioisotope<br>remains in the body after one day?​
    7·1 answer
  • If a car takes a banked curve at less than a given speed, friction is needed to keep it from sliding toward the inside of the cu
    5·2 answers
  • How is a gravitational field around an object shown
    11·1 answer
  • A car travels 60 miles due West first then turns back and travels 120 miles due East in 3 hours. What is...
    10·1 answer
  • Determine explicitly which is faster, 75 miles per hour or 75 m/s? Express all your results in MKS units and explain your conclu
    10·1 answer
  • ОТВЕТЬТЕ !!!!СРОЧНО!!!
    14·1 answer
  • A 5 kilogram block is dropped from a height of 3 meters and falls straight to the ground. What is the work done by the force of
    5·1 answer
  • Please help. Brainliest!
    14·1 answer
  • What do you think explains the pattern of planet density in the solar system
    12·2 answers
  • Kepler's laws, satellites motion and weightlessness
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!