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
Anton [14]
2 years ago
15

When a roller coaster gets to the bottom of a descent, describe the energy transfers and changes to energy stores that happen if

:
a) the brakes are applied to stop it
b) it goes up and over a second hill.​
Physics
1 answer:
Feliz [49]2 years ago
6 0

Answer:

its B

Explanation:

It's B & A at the same time because A. a roller coaster uses brakes to slow down and stop. B is the most reasonable answer. Because all roller coasters go up and over a second time over the hill, but they also slow down. But go with B.

TELL ME IF I´M RITE

You might be interested in
what is the magnitude of g at a height above earth surface where free fall acceleration equal 6.5m/s2
ZanzabumX [31]
The magnitude of gravity is expressed in terms of its acceleration. So the magnitude of ' g ' at that altitude is exactly 6.5 m/s^2.
8 0
3 years ago
A large crane consists of a 20 m, 3,000 kg arm that extends horizontally on top of a vertical tower. The arm extends 15 m toward
Anni [7]

Answer:

m=18000kg

Explanation:

From the question we are told that:

Crane Length l=20m

Crane Mass m_a=3000kg

Arm extension at lifting end l_l=15m

Arm extension at counter weight end l_c=5m

Load M_l=5000kg

Generally the equation for Torque Balance is mathematically given by

T_1 *l_c-(m_a*g) *l_c-(T_2)*l_l=0

mg*5 *-(3000*9.8) *5-(5000*9.8)*15=0

m=18000kg

7 0
3 years ago
Select the arrangement of electromagnetic radiation which starts with the lowest wavelength and increases greatest wavelength. M
Scorpion4ik [409]

Answer:

gamma rays, ultraviolet, infrared, radio

Explanation:

Because on the Electromagnetic spectrum wavelength increases from the gamma end to radio end and frequency decrease in that order

8 0
2 years ago
Read 2 more answers
The equation below is for potassium oxide.
ValentinkaMS [17]

Answer: The ratio of atoms of potassium to ratio of atoms of oxygen is 4:2

Explanation:

According to the law of conservation of mass, mass can neither be created nor be destroyed, and remains conserved. The mass of products must be same as that of the reactants.

Thus the number of atoms of each element must be same on both sides of the equation so as to keep the mass same and thus balanced chemical equations are written.

K exists as atoms and oxygen exist as molecule which consists of 2 atoms. The ratio of number of atoms on both sides of the reaction are same and thus the ratio of atoms of potassium to ratio of atoms of oxygen is 4:2.

5 0
3 years ago
Read 2 more answers
A plane flies from basecamp the Lake A, 280 km away in a direction of 20° north of
klasskru [66]

Answer:

308657

Explanation:

hdoeokeosksjdhdiopejjdhfnfndjdieej i doont know pl

5 0
2 years ago
Other questions:
  • College students living off-campus frequently consume large amounts of ramen noodles and boxed macaroni and cheese. When they fi
    11·1 answer
  • Why does a satellite in a circular orbit travel at a constant speed?
    6·1 answer
  • Vector A with arrow, which is directed along an x axis, is to be added to vector B with arrow, which has a magnitude of 5.5 m. T
    8·1 answer
  • In a particular beam of radiation, which is traveling in a vacuum, the amounts of energy per second at an ultraviolet wavelength
    5·1 answer
  • Convert 5g/cm^3 into kg/m^3​
    10·1 answer
  • Halley’s Comet appears around the sun about once every 76 years. It passes through the part of its orbit nearest the sun in just
    6·1 answer
  • A shotgun of mass 3kg fires a bullet of 0.1kg at a velocity of 250m/s. What is the recoil velocity of the gun
    5·1 answer
  • What will happen in the particles of liquid after 12 hours inside the freezer?​
    7·1 answer
  • What is the relationship between the density of a substance and the speed of sound through that substance?
    10·1 answer
  • Properties of matter are typically broken into two categories:physical and (fill in the blank)
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!