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
pshichka [43]
3 years ago
15

___________ are over 500 million years old and have been developing their unique system all that time.

Physics
2 answers:
Varvara68 [4.7K]3 years ago
5 0

Answer:

none the earth isn't that old

Explanation:

zhannawk [14.2K]3 years ago
3 0

Answer:

C

Explanation:

You might be interested in
Two blocks a and b ($m_a>m_b$) are pushed for a certain distance along a frictionless surface. how does the magnitude of the
Yuki888 [10]

Answer:

the magnitude of the work done by the two blocks is the same.

Explanation:

The work done by block a on block b is given by:

W_a = F_a d

where Fa is the force exerted by block a on block b, and d is the distance they cover.

The work done by block b on block a is given by:

W_b = F_b d

where Fb is the force exerted by block b on block a, and d is still the distance they cover.

For Newton's third law, the force exerted by block a on block b is equal to the force exerted by block b on block a, therefore

F_a = F_b

and so

W_a=W_b

3 0
3 years ago
A skier halfway between the top and bottom of a hill. Which statement best describes the skier?
Dvinal [7]

Answer: The skier has potential and kinetic energy.

Explanation: This is what I found from a different user on this website

5 0
3 years ago
PLEASE HELP
hichkok12 [17]

The correct answer is 195.6 N

Explanation:

Different from the mass (total of matter) the weight is affected by gravity. Due to this, the weight changes according to the location of a body in the universe as gravity is not the same in all planets or celestial bodies. Moreover, this factor is measured in Newtons and it can be calculated using this simple formula W (Weight) = m (mass) x g (force of gravity). Now, leps calculate the weigh of someone whose mass is 120 kg and it is located on the moon:

F = 120 kg x 1.63 m/s2

F= 195.6 N

7 0
3 years ago
Thanks + BRAINLIST <br><br> Please need correct answer asappp
nirvana33 [79]

Answer:

  1. Standing waves can be thought of as a sin wave and a cos wave overlapping each other. They go in different direction hence C is correct
  2. Wave interference can be thought of as the opposite of destructive ---> constructive anda hencd meet and interact on the same medium such that answer B is correct
6 0
3 years ago
a 100 kg person travels from sea level to an altitude of 5000 m. By how mans newtons does their weight change?
Bumek [7]

Answer:

Thus, the change in the weight of the person is 1.6N , option c is correct.

Explanation:

3 0
2 years ago
Other questions:
  • Astronomers estimate that a galaxy contains a. 100 stars. c. millions or billions of stars. b. 1 star. d. 100,000 stars.
    14·1 answer
  • When water molecules are disappearing into the air, there is a net _______?
    12·1 answer
  • Clouds dump around 100 billion gallons of water on rainforests each year. How much rain is evaporated from the rivers, lakes and
    9·2 answers
  • What net force is required to cause a 1600 kg car to accelerate at a rate of 4.0
    9·1 answer
  • True or false: We still use the republican calendar created by the French.​
    5·1 answer
  • The ceiling of a large symphony hall is covered with acoustic tiles which have small holes that are 4.35 mm center to center. If
    13·1 answer
  • What are parts of a pulley
    5·1 answer
  • A person carries a plank of wood 1.6 m long with one hand pushing down on it at one end with a force F1 and the other hand holdi
    9·1 answer
  • Which substance is a heterogeneous mixture?
    9·1 answer
  • Volleyball was invented in 1905.
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!