1. how do the potential energy and the kinetic energy change as the skater moves from the top of the u-shaped ramp to the bottom?

Answer:

Step-by-step explanation:

1. The skater will never get any higher than 6 meters because he can't create any energy, since he has a certain amount of potential energy that is being converted to kinetic energy so he could move up the ramp and then converted again to potential energy when he is at 6 meters on the other side.

2. No. As when the skater is dropped onto the ramp from above, the potential energy decreases and the kinetic energy increases. Every time the skater bounces from the impact, thermal energy is gained, and both potential and kinetic energy are lost.

3. This means that internal energy of a system can be increased by adding heat into the system or by performing work on the system. As per the given problem, we can increase the height of the system. 

4. As the skateboarder goes down the ramp, potential energy is converted to kinetic energy. Because of friction, some of the energy in the system is converted to heat energy. Once the kinetic energy is converted to heat, the energy cannot be converted back to the potential or kinetic energy in the system.

Without friection

with lots of friction

Question2

Along the path from left to right, no energy is converted to thermal energy since the track is frictionless. If no energy is lost, the skater will have enough energy to reach the same height he started with.

Question 3
The energy is being converted to thermal energy because the friction between the ramp and the skater causes heat. This means in real life that if the skater causes a lot of friction while skateboarding, he or she would be slower and have less energy on the ramp.

secret explanation

Explanation:

i think it will help you

Taken from the poem “Abuelito Who” by Sandra Cisneros, the author has used the figurative language of “coins” and “rain” in lines 1, 20, and 21 in order to describe her memories about her grandfather. Cisneros has used simile, which is a figure of speech, throughout the poem. The main function of simile is to make a comparison to show the similarities between two different things. Moreover, simile is usually accompanied by words such as “as” and “like”. In the text, there are two examples of this figure of speech: “Abuelito who throws coins like rain” (line 1)/ “is the rain on the room that falls like coins” (line 21). Simile has helped the author develop the meaning of the poem, that is, to narrate about particular memories she has of her grandfather or “abuelito”, an affectionate term for a grandfather in Spanish. For instance, Cisneros used figurative language and simile in line 1 to describe how her grandfather played with her making coins fall like raindrops from above.

Prospective research subjects who are not able to comprehend information, deliberate, and make decisions about participation in a proposed research study have Cognitive or communicative vulnerability.

Option A

Explanation:

Prospective research subject are those who are taken as subject for the purpose of research on the objective of prospective. When the subjects of Prospective research lack ability in some manners to make an informed choice, the incapacity demonstrated here is remarked as the Capacity-related cognitive vulnerability.

When the subject of prospective research have the above mentioned capacity, in lieu of which, because of limited ability for communication, the subject cannot communicate with researchers and the latter are not able to exercise their capacities effectively, such inability is remarked as the Communicative vulnerability.

Explanation:

- Only think positively. Do not ever think of "what if" s because this will make you think negatively and stop you from doing your job.

- One strategy I have is writing lots of different positives messages in a paper and cutting out each of them. Put them in anywhere you want and take one each day. This will make you start your day positively.

trip the circuit cut of the current electricity then sense the current leakage

Explanation:

you have the trip the circuit so theirs no power to have electricity  and that a sign that like tells you theirs a leakage or the insulation is to old then you cut off the electricity so theirs no electricity running and sense the current leakage so the GFCI wont trip anymore