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
Lunna [17]
3 years ago
12

100 POINTS AND BRAINLIEST! What were the Magdeburg Hemispheres?

Physics
2 answers:
amm18123 years ago
8 0

The Magdeburg hemispheres are a pair of large copper hemispheres, with mating rims. They were used to demonstrate the power of atmospheric pressure. When the rims were sealed with grease and the air was pumped out, the sphere contained a vacuum and could not be pulled apart by teams of horses.

pogonyaev3 years ago
7 0

Answer:

Magdeburg hemispheres are two half-spheres of equal size. Placing them together traps air between them. This air is merely trapped, and not compressed, so the pressure inside is the same as the pressure of the atmosphere outside the spheres. The spheres thus pull apart with nearly no resistance.

You might be interested in
When pushing on a wall while wearing skates, what provides the force that causes you to accelerate away from the wall?
Kruka [31]
Vision and there lies
5 0
2 years ago
A car has a mass of 1500. It is traveling north a 8 m/s. What is the cars momentum
Mama L [17]
Momentum = mass x velocity
= 1500 x 8
= 12000 kg m/s
7 0
2 years ago
A car is going along a circular road at a constant speed. The radius of the curve is 242 m, and the car takes 1.3 minutes to com
Dvinal [7]

Answer:

a_c=1.57\frac{m}{s^2}

Explanation:

In order to find its centripetal acceleration we need to use the next equation:

a_c=\frac{v^2}{r}

So, we need to find its velocity in first place. Considering that the time T required for one complete revolution is called the period. For  constant speed is given by:

T=\frac{2\pi r}{v}

Solving for v, considering that in this case T=1.3min=78s, and r=242

v=\frac{2\pi *(242)}{78} =19.49398518m/s

Finally, replacing v in the centripetal acceleration equation:

a_c=\frac{(19.49398518)^{2} }{242}=1.570311811m/s^2

6 0
3 years ago
When the current through a circular loop is 5.7 A, the magnetic field at its center is 3.9 ✕ 10−4 T. What is the radius (in m) o
borishaifa [10]

Radius of the circular loop is 0.0091m.

<h3>What is magnetic field?</h3>

Magnetic field is the area around a magnet where the magnetism influence is felt .

<h3>What is the magnetic field at the centre of a circular loop?</h3>
  • The formula for magnetic field at the centre of a loop is

B =(μ)I/2r

  • where B= Magnetic field at the centre of a circular loop

μ= Magnetic permeability =4(π)*10^(-7)

I= current flowing through the loop

r= radius of the loop

  • Thus, radius of the loop =(4(π)×10^(-7)×5.7)/(2×3.9×10^(-4))

=0.0091m

Thus, we can conclude that the radius of the loop is 0.0091m .

Learn more about magnetic field here :

brainly.com/question/24761394

#SPJ1

8 0
1 year ago
If two 2-kilogram masses are 2 meters apart, what is the gravitational force between them?
Vsevolod [243]
F=G(m1*m2)\D^2

so
G=6.67 × 10^(-11)<span> m</span>3<span> kg</span>-1<span> s</span><span>-2
</span>
= G(2*2)\4
=G
5 0
3 years ago
Other questions:
  • How are chemical changes of matter related to the organization of the periodic table
    8·1 answer
  • If a bag holds 70.874 grams ,how many itemsare in the bag?​
    8·1 answer
  • What is the length of 0.005 mm in kilometers?
    8·1 answer
  • How many electrons are there in 3.5 x 10" C?
    7·1 answer
  • A jet can travel the 6000 km distance between washington,
    6·1 answer
  • i need the answer asap plz A child rides her bike at a rate of 12.0 km/hr down the street. A squirrel suddenly runs in front of
    7·2 answers
  • To what potential should you charge a 2.0 μF capacitor to store 1.0 J of energy?
    15·1 answer
  • Neurons that deliver sensory information from sensory receptors to the spinal cord are called __________.
    8·2 answers
  • Activity C (continued from previous page)
    6·1 answer
  • 1. What types of natural phenomena could serve as time standards?<br>​
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!