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
defon
4 years ago
13

Dinosaurs emerged during what time period

Physics
1 answer:
swat324 years ago
6 0
Dinosaurs lived between 230 and 65 million years ago, in a time known as the Mesozoic Era<span>. This was many millions of years before the first modern humans, Homo sapiens, appeared. </span>
You might be interested in
The magnetosphere of Jupiter is
BartSMP [9]

Answer:

d. a large region outside Jupiter occupied by its magnetic field and filled with high-energy charged particles.  

Explanation:

A magnetic field is generated by the movement of a charged particle in the space around it. For the case of Jupiter its magnetic field is created by the liquid metallic hydrogen in its core.

So the magnetosphere is just the magnetic field around a planet, which interacts with high-energy charged particles (for example: Cosmic Rays).

Magnetospheres protect planets from the extreme radiation coming from stars or another interstellar source.      

3 0
3 years ago
which best describes what happens with the sonar to sound pulses from a ship after they hit the ocean floor?
lakkis [162]

Answer:

With sonar, what happens to sound pulses from a ship after they hit the ocean floor? ... They bounce back to the ship.

Explanation:

3 0
3 years ago
The density of a substance is 3.4 g cm-3. Its relative density relative to another substance is 2.0. what is the density of the
ankoles [38]

Answer:

1.7 g/cm³

Explanation:

Given that:

Density of substance = 3.4 g/cm³

Relative density to another substance = 2

Density of second substance=?

Let density of second substance = x

Relative density = density of substance / density of second substance

Relative density = density of substance / x

2.0 = 3.4g/cm³ / x

2 * x = 3.4 g /cm³

x = 3.4 g/cm³ ÷ 2

x = 1.7 g/cm³

5 0
3 years ago
At a time when mining asteroids has become feasible, astronauts have connected a line between their 3740-kg space tug and a 5690
Gwar [14]

Answer:

61.4 s

Explanation:

The distance d₁ traveled by the asteroid:

d_1=\frac{1}{2}a_1t^2

The distance d₂ traveled by the space ship:

d_2=\frac{1}{2}a_2t^2

The total distance d:

d=d_1+d_2=\frac{1}{2}(a_1+a_2)t^2

Solving for time t:

t=\sqrt{\frac{2d}{a_1+a_2}}=\sqrt{\frac{2d}{F(\frac{1}{m_1}+\frac{1}{m_2})}}=\sqrt{\frac{2dm_1m_2}{F(m_1+m_2)}}

3 0
3 years ago
Read 2 more answers
1. If you have a Periodic Table that is NOT color coded, describe WHERE to look on the Periodic Table to find elements which hav
igor_vitrenko [27]
The periodic table is arranged in a way that trends are present in columns and rows. Elements belonging to the same column belongs to the same family which means they have the same properties. Elements belonging to the same row have the same number of electron shells. Example of elements with the same chemical properties are Na, Li, and K all belonging to the same group.
3 0
4 years ago
Other questions:
  • What are the components of vector A if it’s magnitude is 70 m/sand makes an angle of 51.7 degrees with the +x- axis?
    14·1 answer
  • Mary walked north from her home to Sheila's home, which is 4.0 kilometers away. Then she turned right and walked another 3.0 kil
    10·1 answer
  • Similar fossiles found all over the world true or false?
    8·1 answer
  • The speed of light in benzene is 2.00×108 m/s. what is the index of refraction of benzene?
    12·1 answer
  • What is the distance from one crest to the next crest?
    10·1 answer
  • PLEASE HELP ME WITH THIS
    11·1 answer
  • Which is a device that stores electric charge by separating positive and negative charges?
    13·1 answer
  • 15. A travelling wave is described by the equation y(x,t)= 0.003 cos (20 x + 200t) where y and x are
    15·1 answer
  • Một vật dao động điều hòa với phương trình x= 4cos(6πt) cm. Kể từ khi vật bắt đầu dao động, thời điểm vật qua a) vị trí cân bằng
    7·1 answer
  • Which is NOT a property of the organisms that have become useful index fossils
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!