![subject](/tpl/images/cats/fizika.png)
Physics, 01.09.2019 10:30 hopkinsgail569
We use electrical devices that produce motion, light, and sound. which aspect of energy explains why these devices are possible?
energy can’t be created.
energy can change from one form to another.
energy isn’t made of matter.
energy can’t be destroyed.
![ansver](/tpl/images/cats/User.png)
Answers: 2
![](/tpl/images/ask_question.png)
![](/tpl/images/ask_question_mob.png)
Another question on Physics
![question](/tpl/images/cats/fizika.png)
Physics, 21.06.2019 21:50
Adiver in midair has an angular velocity of 6.0 rad/s and a moment of inertia of 1.2 kg·m2. he then pulls is arms and legs into a tuck position and his angular velocity increases to 12 rad/s. the net external torque acting on the diver is zero. what is his moment of inertia in the tuck position?
Answers: 1
![question](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 08:00
Based on the concept of the wave-like nature of light, huygens' theory of light postulates that the more light was "bent" by a substance the slower it would move while traversing across that substance. a) deflection b) interference c) refraction d) resonance
Answers: 3
![question](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 13:10
The atoms in a nickel crystal vibrate as harmonic oscillators with an angular frequency of 2.3 × 1013 rad/s. the mass of a nickel atom is 9.75 × 10-26 kg. what is the difference in energy between adjacent vibrational energy levels of nickel? (h = 6.626 × 10-34 j • s, , 1 ev = 1.60 × 10-19 j)
Answers: 2
![question](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 22:00
Agirl throws a ball. if the ball's acceleration is 12 m/sec/sec and its mass is 0.5 kg, how much force did the girl apply to the ball?
Answers: 1
You know the right answer?
We use electrical devices that produce motion, light, and sound. which aspect of energy explains why...
Questions
![question](/tpl/images/cats/en.png)
English, 29.04.2021 23:30
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 29.04.2021 23:30
![question](/tpl/images/cats/mat.png)
Mathematics, 29.04.2021 23:30
![question](/tpl/images/cats/mat.png)
Mathematics, 29.04.2021 23:30
![question](/tpl/images/cats/ekonomika.png)
Business, 29.04.2021 23:30
![question](/tpl/images/cats/himiya.png)
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/himiya.png)
![question](/tpl/images/cats/istoriya.png)
History, 29.04.2021 23:30
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/ekonomika.png)
Business, 29.04.2021 23:30
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/en.png)