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
DerKrebs [107]
3 years ago
5

Consider the roller coaster on the track. If you want to increase the kinetic energy of the roller coaster as it proceeds throug

h the course, what is the FIRST thing you should do?
A) Increase the height at point A.
B) Decrease the height at point A.
C) Increase the height at point B.
D) Decrease the height at point B.

Physics
1 answer:
a_sh-v [17]3 years ago
5 0

Answer:

The answer is A and D but if you want one anwer i think the anwer is A

Explanation:

You might be interested in
a rocket is launched with a constant acceleration straight up. exactly 4.00 seconds after lift off, a bolt falls off the side of
Papessa [141]

The initial speed of the bolt is not 58.86 m/s.  

Let a be the acceleration of the rocket.  

During the 4 sec lift off, the rocket has reached a height of  

h = (1/2)*a*t^2  

with t=4,  

h = (1/2)*a^16  

h = 8*a  

Its velocity at 4 sec is  

v = t*a  

v = 4*a  

The initial velocity of the bolt is thus 4*a.  

During the 6 sec fall, the bolt has the initial velocity V0=-4*a and it drops a total height of h=8*a. From the equation of motion,  

h = (1/2)*g*t^2 + V0*t  

Substituting h0=8*a, t=6 and V0=-4*a into it,  

8*a = (1/2)*g*36 - 4*a*6  

Solving for a  

a = 5.52 m/s^2

6 0
3 years ago
Phase unbalance causes three-phase motors to operate at temperatures ? and, therefore, the motor cannot deliver its rated horsep
anastassius [24]

Phase unbalance causes three-phase motors to operate at temperatures higher than nameplate ratings and, therefore, the motor cannot deliver its rated horsepower.

<h3>What is an electric vehicle (EV)?</h3>

An EV stands for an electric vehicle. Electric vehicles (EVs) are autos that are powered totally or partially by electricity.

Electric cars are extremely cost-effective to run because they have fewer moving parts to maintain and use little to no fossil fuels (petrol or diesel).

Hence, three-phase motors operating with phase imbalance run at temperatures over nameplate limits, which prevents the motor from producing its rated horsepower.

.

To learn more about electric vehicles here,

brainly.com/question/27434548

#SPJ4

7 0
2 years ago
The force exerted by the earth on a body is called ______of a body.
AVprozaik [17]

Answer:

The force exerted by the earth on a body is called gravitational of a body.

i think this is the answer

4 0
3 years ago
Read 2 more answers
MOST elements on the periodic table are
lidiya [134]

Answer:

B

Explanation:

6 0
3 years ago
Read 2 more answers
Why is air considered a fluid
34kurt

Answer:

A fluids is any substance that flows. Air is made of stuff, air particles, that are loosely held together in a gas form. Although liquids are the most commonly recognized fluids, gasses are also fluids. Since air is a gas, it flows and takes the form of its container.

Explanation:

6 0
3 years ago
Read 2 more answers
Other questions:
  • Which of the following illustrations show atoms of the same element?
    6·1 answer
  • A child attaches a rubber ball to a string and whirls it around in a circle overhead. If the string is 0.2m long and the ball's
    12·1 answer
  • Are al mixtures solutions?
    13·1 answer
  • For the electromagnetic field described by the equations below, show (a) under what conditions of ω and k does the field satisfy
    15·1 answer
  • Please answer these!
    15·1 answer
  • An inclined plane can help _____.
    10·1 answer
  • A plumber heats a plastic pipe, softens it, shapes it, and then lets it cool. After it is hardened, the
    12·1 answer
  • I'm Always in front of you. but you never see me. what am i?​
    6·1 answer
  • The Sears Tower in Chicago is approximately 444 m tall Suppose a book
    14·1 answer
  • Your washer has power of 450 watts, and your dryer has a power of 3000
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!