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
hjlf
3 years ago
6

Need help please ASAP 39 points ???? 4 questions each have to be a paragraph the directions are there ?????

Physics
1 answer:
Hunter-Best [27]3 years ago
4 0

Answer:

1) Magnetic resonance imaging (MRI) is a test that uses powerful magnets, radio waves, and a computer to make detailed pictures of the inside of your body.

Your doctor can use this test to diagnose you or to see how well you've responded to treatment. Unlike X-rays and computed tomography (CT) scans, MRIs don’t use the damaging ionizing radiation of X-rays.

2) MRIs employ powerful magnets which produce a strong magnetic field that forces protons in the body to align with that field. When a radiofrequency current is then pulsed through the patient, the protons are stimulated, and spin out of equilibrium, straining against the pull of the magnetic field.

3)  Magnetic resonance imaging (MRI) uses a large magnet and radio waves to look at organs and structures inside your body. Health care professionals use MRI scans to diagnose a variety of conditions, from torn ligaments to tumors. MRIs are very useful for examining the brain and spinal cord.

4) The magnetic fields that change with time create loud knocking noises which may harm hearing if adequate ear protection is not used. They may also cause peripheral muscle or nerve stimulation that may feel like a twitching sensation. The radiofrequency energy used during the MRI scan could lead to heating of the body.

pls mark brainliest

You might be interested in
Why do heavier objects fall at the same speed as lighter ones?
GaryK [48]
Speed of any freely falling object is always same. Provided, both are left to fall from the same height. If you perform this experiment in a perfect vacuum or near vacuum laboratory, both of them will reach ground with same velocity this is because there is no resistance to their motion. This is always true no matter where you go and perform this experiment. 
It can be easily proved from conservation of mechanical energy. Why conserving energy? because there are no forces acting on the freely falling objects other than conservative force(mg). 

5 0
4 years ago
One terminal of a car battery is said to be connected to “ground.” since it is not really connected to the ground, what is meant
GalinKa [24]
This expression means that the negative terminal (-) is connected to the metal chassis or engine, which means that all voltages used for the electrical devices in the car are measured with respect to the car's chassis or engine. 
Today's vehicles have a negative ground system, which means that the vehicle's steel frame or chassis is directly connected to the negative side of the battery via the negative battery cable. 
3 0
3 years ago
If we increase the distance traveled when doing work, and keep all other factors the same, what will happen?
stepladder [879]

Answer: D

Explanation:

A -amount of work

F-force

s-distance

If you keep same Force(F) and increase distance(s), amount of work will increase, according to:

A=F*s

8 0
3 years ago
One of the difficulties in studying mechanics is that many common words are used with highly specific technical meanings,among t
Allisa [31]

Mnanan anaw anwkkww wjakana akkqna akaoaman akamakq

8 0
3 years ago
In 2000, NASA placed a satellite in orbit around an asteroid. Consider a spherical asteroid with a mass of 5.00�1015kg and a rad
irakobra [83]

Answer:

a).v_{1}=13.49 \frac{m}{s}

b).v_{2}=17.54\frac{m}{s}

Explanation:

Using the conservation of energy and the kinetic energy of the satellite around the asteroid can model the motion in

\frac{1}{2}*m*v^2=\frac{G*M*m}{a_{o}}

v^2=\frac{2*G*M*m}{a_{o}}

G=6.673x10^{-11}\frac{m^3}{kg*s^2}

M=1.20x10^{16}kg

a).

a_{o}=8.8km*\frac{1000m}{1km}=8800m

v=\sqrt{\frac{2*6.673x10^{-11}\frac{m^3}{kg*s^2}*1.2x10^{10}kg}{8800m}}

v_{1}=13.49 \frac{m}{s}

b).

a_{f}=5.2km*\frac{1000m}{1km}=5200m

v=\sqrt{\frac{2*6.673x10^{-11}\frac{m^3}{kg*s^2}*1.2x10^{10}kg}{5200m}}

v_{2}=17.54\frac{m}{s}

3 0
3 years ago
Read 2 more answers
Other questions:
  • A student pulls a box across a horizontal floor at a constant speed of 4.0 meters per second by exerting a constant horizontal f
    10·2 answers
  • For numbers 2 and 3, which one is compression and which one is rarefaction?
    7·1 answer
  • Describe a good level of body fat
    14·1 answer
  • When you are ice skating, to get started, you push your skate backwards on the ice and, as a result, begin to move forward. Whic
    7·2 answers
  • Help with 7,8,9 please!!
    14·1 answer
  • Which device records digital signals? A. V C R tape. B. C D. C. phonograph record. D. audio cassette.
    10·1 answer
  • 3.
    8·1 answer
  • 10 cm^3 of iron have a smaller
    12·1 answer
  • SOMEONE WHO KNOWS AND CAN HELP WITH ACCELERATION AND VELOCITY PLEASE HURRY HELP
    13·1 answer
  • 1. Using pollen grains placed in water,
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!