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
nordsb [41]
3 years ago
10

Explain why the top of the loop cannot be the same height as (or higher than) the top of the first hill. Assume the roller coast

er and its surroundings are close to a closed system. Use what you know about energy transformations and the effects of friction within a closed system to write your answer.
Passage
Examine this diagram of a roller-coaster track. The very top of the first hill (point B) is higher than the very top of the loop (point D). After the cars reach point B, this roller coaster needs no additional energy to complete its trip.

Physics
2 answers:
Ivahew [28]3 years ago
7 0

Answer:

By conservation of energy, it can climb up to a height equal to that it went down before. However, due to the friction in the machines, the total mechanical energy of the roller coaster will decrease. As a result, the first "hill" of many roller coasters are the highest, but the followings will have decreasing heights.

Explanation:

natka813 [3]3 years ago
5 0

Answer:

Take a break than eat and work on it again and you will get a good score

Explanation:

You might be interested in
How can we avoid injuries in school or community when engaging in physical activities?
Mazyrski [523]

Answer:

  • we should not fight with each other
3 0
3 years ago
A brick sliding across a smooth floor has a coefficient of static friction of s=0.23 and a coefficient of kinetic friction of k=
pantera1 [17]

Answer:

0.029325

Explanation:

0.23x0.15=0.0345

0.0345x0.85=0.029325

4 0
1 year ago
Read 2 more answers
A baseball pitcher throws a fastball horizontally at a speed of 43.0 m/s. Ignoring air resistance, how far does the ball drop be
Nady [450]
Based on your problem where as ask for the distance of the ball drop between the pitchers mound and the home plate and with a given of the speed of ball is 43m/s and the homeplates is 60.6ft away. Based on my step by step procedure and also considering the value of gravity by 9.8m/s^2 i came up with the distance of 144m away
7 0
3 years ago
Read 2 more answers
A psychologist is interested in exploring the effect tutorial support on students academic performance and assign students in to
NikAS [45]

Answer:

The dependent variable is academic performance

The independent variable is the presence/absence of tutorial support

The control group are students who did not get the tutorial support.

The experimental group were students that got the tutorial support

Explanation:

In every experiment, there is a dependent and independent variable as well as an experimental and a control group.

The experimental group receive the treatment while the control group do not receive the treatment. The independent variable is manipulated and its impact on the dependent variable is evaluated.

The control group are students who did not receive the tutorial support while the experimental group are students that received the tutorial support.

The dependent variable in this case is academic performance. Its outcome depends on the presence or absence of tutorial support (independent variable).

5 0
3 years ago
Find the y-component of this
Alborosie

Answer:

-0.0789 m

Explanation:

Recall that the y-component comes associated with the sin(18.4) through the following trigonometric relationship:

y = 0.250 sin(-18.4) ≈ -0.0789 m

Notice it is negative since it is below the x-axis.

4 0
3 years ago
Other questions:
  • What is the energy source that heats a contracting protostar?
    5·1 answer
  • Your pet snake would be found in which kingdom:
    11·1 answer
  • A velocity selector can be used to measure the speed of a charged particle. A beam of particles is directed along the axis of th
    11·1 answer
  • How much time would it take for the sound of thunder to travel 1,500 meters if sound travels at a speed of 330 m/sec?
    12·2 answers
  • Name the physical quantity measured by the velocity-time graph?
    6·1 answer
  • 11 kg is a familiar weight for a bag of flour. You are baking cookies for a Save The Rain Forest fund drive. It takes 500 g of f
    6·1 answer
  • If an object looks blue, it reflects ____ waves.
    8·1 answer
  • If two waves are traveling at the same speed, which statement will be true about their wavelengths? 1.The wave with higher frequ
    11·1 answer
  • A jeweler needs to electroplate gold onto a bracelet using an ionic solution. He knows that the charge carriers in the ionic sol
    9·1 answer
  • Which forces are contact forces give one example of each​
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!