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
pishuonlain [190]
3 years ago
13

Explain why Earth and other planets were not solid when they formed during the beginning of the Precambrian, approximately 4,600

million years ago (MYA). What was this particular time period called, and why is this time period not really considered a part of Earth’s geological history?
Physics
1 answer:
alexandr402 [8]3 years ago
5 0

earth still is not solid ... core is molten ... volcanoes, sea is liquid

at v v v beginning was gas ????

You might be interested in
In a mass spectrometer a particle of mass m and charge q is accelerated through a potential difference V and allowed to enter a
Ghella [55]

Answer:

m = B²qR² / 2 V

Explanation:

If v be the velocity after acceleration under potential difference of V

kinetic energy  = loss of electric potential energy

1/2 m v² = Vq ,

v² = 2 Vq / m ----------------------- ( 1 )

In magnetic field , charged particle comes in circular motion in which magnetic force provides centripetal force

magnetic force = centripetal force

Bqv = mv² / R

v = BqR / m

v² = B²q²R² / m²  ------------------------- (2)

from (1) and (2)

B²q²R² / m²  = 2 Vq / m

m = B²q²R² / 2 Vq

m = B²qR² / 2 V

7 0
3 years ago
Tremendous energy is released by nuclear reactions is a measure of the energy required to bond the nucleus together. Where does
Harlamova29_29 [7]

Answer:

Fission is the opposite of fusion and releases energy only when heavy nuclei are split. As noted in Fusion, energy is released if the products of a nuclear reaction have a greater binding energy per nucleon than the parent nuclei.

The amount of energy released during nuclear fission is millions of times more efficient per mass than that of coal considering only 0.1 percent of the original nuclei is converted to energy. Daughter nucleus, energy, and particles such as neutrons are released as a result of the reaction

5 0
3 years ago
For a solar eclipse to occur which of the following alignments must be necessary
katovenus [111]
Very specific alignment of the Sun, Earth, and Moon. If the Moon is lined up precisely with the Sun from the Earth's point of view, the Moon will block Sunlight from reaching the Earth, causing a solar eclipse.
6 0
3 years ago
What is a good sentence using relative dating
emmasim [6.3K]
You could certainly have some good easy going carefree conversation with your sister or your cousin at dinner or at a movie, but relative dating is not an effective way to get serious and find a life partner.
8 0
3 years ago
A powerful searchlight shines on a man. The man's cross-sectional area is 0.500m2 perpendicular to the light beam, and the inten
babymother [125]

Answer:

The magnitude of the force the light beam exerts on the man is 5.9 x 10⁻⁵N

(b) the force the light beam exerts is much too small to be felt by the man.

Explanation:

Given;

cross-sectional area of the man, A = 0.500m²

intensity of light, I = 35.5kW/m²

If all the incident light were absorbed, the pressure of the incident light on the man can be calculated as follows;

P = I/c

where;

P is the pressure of the incident light

I is the intensity of the incident light

c is the speed of light

P = \frac{I}{c} =\frac{35500}{3*10^8} = 1.18*10^{-4} \ N/m^2

F = PA

where;

F is the force of the incident light on the man

P is the pressure of the incident light on the man

A is the cross-sectional area of the man

F = 1.18 x 10⁻⁴ x 0.5 = 5.9 x 10⁻⁵ N

The magnitude of the force the light beam exerts on the man is 5.9 x 10⁻⁵ N

Therefore, the force the light beam exerts is much too small to be felt by the man.

8 0
3 years ago
Other questions:
  • Consider the case of the car starting at rest and accelerating forward. A. Since the air inside the car is not leaking out, it m
    7·1 answer
  • A rectangular plate, whose streamwise dimension (or chord c) is 0.2 m and whose width (or span b) is 1.8 m, is mounted in a wind
    8·1 answer
  • Hiw many times lager then a centimeter is a dekagram​
    5·1 answer
  • If a compound has a very low melting and boiling point, it is likely that the compound possesses mainly which type of intermolec
    5·1 answer
  • The windmill has 7 blades and rotates at an angular speed of 0.5 rad/s. The opening between successive blades is equal to the wi
    8·1 answer
  • The figure shows a structure subject to a force of 60 kN and a torque of 30 kN.m. Determine the horizontal (left-to-right orient
    12·1 answer
  • Jake's toy car is sitting on a smooth, flat surface. This wheel and axle simple machine will remain in the same place because th
    8·1 answer
  • 7. A neutral aluminum rod is at rest on a foam insulating base. A negatively charged balloon is brought near one end of the rod
    14·1 answer
  • which two developments are most likely to occur if nonrenewable resources such as fossil fuels are no longer extracted from eart
    11·1 answer
  • Why was John Paul Jones's victory important in the war? His victory increased France's confidence in the skill of the Continenta
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!