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
ddd [48]
3 years ago
13

Please I really need the help

Physics
1 answer:
Lunna [17]3 years ago
3 0

Answer:

7) there is a theory that these animals can see the magnetic field of the Earth due to a compass like mechanism inside their eyes in order to navigate.

8) Earth's magnetic field is a result of the currents found inside the outer core that consist of electricity.

You might be interested in
Need help on this please
Likurg_2 [28]
Build up of pressure between tectonic plates .
8 0
3 years ago
Why is there a wet climate on the windward side of a tall mountain and a dry climate on the leeward side?
Eduardwww [97]

One side of the mountain that has constant wind and rain blowing onto it, is more likely to catch what is falling than the other side leaving it dryer.

3 0
3 years ago
Read 2 more answers
A 13-N east horizontal force acts in the same direction as a 6.4kg block as it slides 2.5m/s on a frictionless, horizontal surfa
MaRussiya [10]

Answer:

6.77 m/s

Explanation:

Acceleration = Force/mass;

The block is accelerated by 13/6.4 m/s^2 for 2.1s from an initial velocity of 2.5m/s.

Applying the equation of motion:

Vf=Vi + at

Where Vf is the final velocity, Vi is the initial velocity, a is the acceleration and t is the time for which the object accelerates.

<h3>Vf= 2.5 + ((13/6.4)*2.1);</h3>
8 0
4 years ago
The two upper chambers of the human heart are known as:
True [87]
The answer is atriums
3 0
3 years ago
Read 2 more answers
Assume that a 4.00 kg pendulum bob is hanging from a 7.90 m long cable. The cable is attached to a hook in the ceiling 10 m up f
leonid [27]

Answer:

Explanation:

Given

mass of Pendulum m=4 kg

Length of cable= 7.90 m

Distance between roof and Floor=10 m

mg\sin\thetawill Provide Torque

thus mg\sin \theta \times L=I\cdot \alpha

where I=moment of inertia

\alpha=angular acceleration

here \thetais small therefore \sin \theta \approx \theta

\frac{g}{L}\theta =\alpha

thus \omega ^2=\frac{g}{L}

\omega =\sqrt{\frac{g}{L}}

And T\cdot \omega =2\pi

T=2\pi \sqrt{\frac{L}{g}}

T=2\pi \sqrt{\frac{7.90}{9.8}}=5.64 s

Small angle refers to any angle where

\sin \theta \approx \thetai.e. any angle less than 15^{\circ}

3 0
4 years ago
Other questions:
  • Work in the amount of 280 J is done in lifting an object a distance of 4.0 m in a time. How much force did it take to lift the o
    6·1 answer
  • A. Which of the four thermal processes describes the pressure-volume relationship at a constant temperature?
    8·2 answers
  • Volume is the space occupied by a quantity of matter. <br> a.true <br> b.false
    6·2 answers
  • Acording to Newton’s second law of motion if a rigid body of unchanging mass is observed accelerating what must be happening
    7·2 answers
  • If you were to descend 100 m below the surface of the ocean, you would be in _____.
    8·2 answers
  • Here the file attached
    10·2 answers
  • In which direction does a Newton's Third Law reaction force act?
    7·1 answer
  • What is the power dissipated by a 50.0 ohm resistor?
    11·1 answer
  • You have a rod with a length of 146.4 cm. You prop up one end on a brick which is 3.8 cm thick. Your uncertainty in measuring th
    15·1 answer
  • if a car engine has a thermal efficiency of 40% and it does 400 j of work in one cycle, how much energy input does it require ea
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!