![myla18jabbar](/avatars/22046.jpg)
myla18jabbar
21.02.2020 •
Physics
Can y’all help with number 2, 4,5,6?
Solved
Show answers
More tips
- G Goods and services How to Choose the Best Publishing House for Your Children s Book: Tips and Recommendations...
- S Science and Technology When do we change our clocks?...
- A Animals and plants How to Teach Your Parrot to Talk?...
- F Family and Home How to Remove Fading from Clothes: Tips and Tricks...
- F Food and Cooking How to Make Polendwitsa at Home?...
- F Family and Home Parents or Environment: Who Has the Most Influence on a Child s Upbringing?...
- P Philosophy Unbelievable stories of encounters with otherworldly forces...
- L Leisure and Entertainment How to Choose the Perfect Gift for Men on February 23rd?...
- H Health and Medicine How to Treat Whooping Cough in Children?...
- H Health and Medicine Simple Ways to Lower Cholesterol in the Blood: Tips and Tricks...
Answers on questions: Physics
- P Physics What is solid matter and can we covert matter into something else...
- P Physics A 5000kg freight car moving at 2 m/s East collides with a 10,000kg freight car at rest. Upon collision, they got stuck and moved with same velocity. Find their final velocity...
- P Physics What type of subsurface material is able to store groundwater?...
- P Physics What is an example of a sting nuclear force ? A.) stability of an atom B.) a book at rest C.) attraction between the opposite poles of a magnet D.) downward acceleration...
- P Physics What is the elastic potential energy of a spring that is compressed a distance of 0.35 m and has a spring constant of 71.8 N/m?...
- P Physics Describe two types of stress that defroms rocks...
- B Biology Write a single, coherent statement that includes the following terms: differentiation gene mitosis...
- E English 2. Write an essay that analyzes the use of symbolism in The Catcher in the Rye. Choose two or three of the symbols discussed in class and explain how they contribute to...
- M Mathematics Maggie writes the equations below to find the unknown number in 14 x 2 x 3 = . Which pair of equations shows another way that Maggie could find the unknown number?...
- M Mathematics An arborist examined trees in an orchard to see if they were infected with a virus. Out of 100 trees, 70% had the virus. How many trees were infected with the virus? PLEASE...
Ответ:
2)Ek = 686.7[J]; 4) see the explanation part; 5) B) Remained motionless; 6) P = 339 [watt]
Explanation:
2)
Using, the principle of energy conservation we can find the kinetic energy of the rock. We must bear in mind that the potential energy as the rock falls is becoming kinetic energy.
Now replacing the values:
4)
False, the work is always done in the same direction as the application of force.True, energy is always conserved and transformed from one form to another, that is why the sum of potential and kinetic energies will remain constant.False, the moment is defined as the change of speed in a body, under the effect of force in a time interval.False, the kinetic energy is increasing, while the potential energy is decreasing5)
B) Remained motionless
The reason is that work is defined as the product of force by distance, when there is no work for this case, it is because there is no movement of the object due to force.
6)
We recall that work is defined as the product of force by distance
W = F * d
W = 113 * 27
W = 3051[J]
And power is defined as the amount of work performed over a time interval.
Power = W/t
Power = 3051/9
Power = 339 [watt]
Ответ:
convection in the mantle.