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
Fittoniya [83]
4 years ago
7

How old is the planet? ____________________ how old is the earliest evidence of life on earth? ____________________?

Physics
1 answer:
kipiarov [429]4 years ago
8 0
The earth is about 4.5 billion years old with evidence of life about 3.8 billion years ago.
You might be interested in
A large sheet of charge has a uniform charge density of 9  μCm2. What is the electric field due to this charge at a point just
Alex73 [517]

Answer:

Explanation:

Surface charge density, σ = 9 μC/m² = 9 x 10^-6 C/m²

According to the Gauss theorem,

Electric field due to the sheet is given by

E = \frac {\sigma }{2\epsilon _{0}}

E = \frac{9\times 10^{-6}}{2\times 8.854\times 10^{-12}}

E = 5.08 x 10^5 N/C

7 0
3 years ago
Please help on this one?
koban [17]

Using the given equation:

di = 20.0 * 10.0 / 20.0 - 10.0

di = 200/10

di = 20.0 cm

The answer is A.

6 0
4 years ago
Read 2 more answers
What material is most commonly used to make a photovoltaic solar cell?
zaharov [31]

Solar cells can be classified into first, second and third generation cells. The first generation cells—also called conventional, traditional or wafer-based cells—are made of crystalline silicon, the commercially predominant PV technology, that includes materials such as polysilicon and monocrystalline silicon.

3 0
4 years ago
Why is an earthworm an invertebrate?
zimovet [89]

Earthworm have bones Some children confuse earthworms, which are invertebrates and have no bones, with snakes which are vertebrates and do have a bony skeleton and many ribs.

8 0
3 years ago
Read 2 more answers
Waves in the ocean are _____ traveling along the water
Mice21 [21]
The answer is energy.

Waves in the ocean are energy travelling along water.

Waves do not transport mass, they transport energy, this is the ability to perform work or exert force and distant points.

Although water seems to be travelling along with the wave, the molecules of water only move up and down; they do not travel along with the wave.
4 0
3 years ago
Read 2 more answers
Other questions:
  • Use the graph to determine the object’s average velocity.
    9·1 answer
  • 1:a boy 2 a girl pulling a heavy crate at the same time w/10 unite of force each.What is the net force acting on the object
    5·1 answer
  • A positive point charge (q = +8.65 x 10-8 C) is surrounded by an equipotential surface A, which has a radius of rA = 2.97 m. A p
    12·1 answer
  • HELP PLEASE!!! I'M REALLY BAD AT MECHANICAL ENERGY!!!
    6·1 answer
  • A biker starts moving from rest with a constant acceleration of 2.0 m/s^2. What is his velocity after 5.0 s?
    15·1 answer
  • g Larry , Moe, and Curly are pushing on a 25 kg crate. The crate is sitting on a horizontal floor, and the coefficient of kineti
    11·1 answer
  • The fundamental rule for the attraction and repulsion of magnets is magnetic forces follow the inverse-square law. opposite char
    11·1 answer
  • If a dice is thrown at random find the probability of getting 4​
    12·2 answers
  • Fill in the blanks in the following statements:
    7·1 answer
  • A galaxy containing substantial amounts of dark matter will.
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!