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
Alexxandr [17]
3 years ago
12

If you needed information about a scientificconcept, whom would you ask? Check all thatapply.my teachermy parentsa university pr

ofessora scientistmy friendsa librarian

Physics
2 answers:
ycow [4]3 years ago
7 0
It's possible that you could get the information you need from ANY of them. 
But it's true that if you need the info in a hurry, and it absolutely positively
has to be correct, then you should approach them in kind of the order of
what the probability is that you'll get the straight, correct story.

To me, here's how I would line them up in the order of probability:

Tops:  a scientist specializing in that particular field
next    a scientist specializing in a different field
next    a university professor who teaches that particular field
next    a university professor who teaches a different field
next    a librarian, who may not know it but definitely knows where to find it  
next    my parents
next    my teacher
last     my friends  (nothing against my friends, but if it has to be fast
                             and accurate, then I may not have the time to wait
                             for my friend to find it, or the time to check it out
                             after I get it from my friend)
allochka39001 [22]3 years ago
4 0
A librarian... it might also be a scientist
You might be interested in
X-rays have so much energy they can go right through your ___ and ___.
Stolb23 [73]

Answer:

X-rays have so much energy they can go right through your <u>muscles</u> and <u>fat</u>.

Explanation:

There are actually more ways to fill in those two blanks... Different parts of the body absorb x-rays in varying degrees, but soft tissues (like skin, muscles, fat, and organs) allow most of the X-rays to pass through.

8 0
3 years ago
When Jackson throws a baseball in a straight path what two forces causes the ball to eventually stop moving
Aloiza [94]
Gravity and wind resistence
5 0
3 years ago
The rubber band contains .......potential energy as it is stretched.
kodGreya [7K]

Answer:

elastic potential energy

You input potential (stored) energy into the rubber band system when you stretched the rubber band back. Because it is an elastic system, this kind of potential energy is specifically called elastic potential energy.

Explanation:

4 0
2 years ago
HELP ME PLEASE!!!!
Rzqust [24]

The most rapid period of growth and development occurs during infancy. Physical changes include doubling of birth weight, increased height, and development of sight and hearing.
I hope this helps! :)
6 0
2 years ago
Read 2 more answers
A parachutist falls 50.0 m without friction. When the parachute opens, he slows down at a rate of 67 m/s*2. If he reaches the gr
KIM [24]

Answer:

3.49 seconds

3.75 seconds

-43200 ft/s²

Explanation:

t = Time taken

u = Initial velocity

v = Final velocity

s = Displacement

a = Acceleration

s=ut+\frac{1}{2}at^2\\\Rightarrow 50=0t+\frac{1}{2}\times 9.81\times t^2\\\Rightarrow t=\sqrt{\frac{50\times 2}{9.81}}\\\Rightarrow t=3.19\ s

Time the parachutist falls without friction is 3.19 seconds

v^2-u^2=2as\\\Rightarrow v=\sqrt{2as+u^2}\\\Rightarrow v=\sqrt{2\times 9.81\times 50+0^2}\\\Rightarrow v=31.32\ m/s

Speed of the parachutist when he opens the parachute 31.32 m/s. Now, this will be considered as the initial velocity

v=u+at\\\Rightarrow 11=31.32+9.81t\\\Rightarrow t=\frac{11-31.32}{-67}=0.3\ s

So, time the parachutist stayed in the air was 3.19+0.3 = 3.49 seconds

s=ut+\frac{1}{2}at^2\\\Rightarrow \frac{s}{2}=0t+\frac{1}{2}\times a\times t^2\\\Rightarrow \frac{s}{2}=\frac{1}{2}at^2

s=ut+\frac{1}{2}at^2\\\Rightarrow \frac{s}{2}=u1.1+\frac{1}{2}\times a\times 1.1^2

Now the initial velocity of the last half height will be the final velocity of the first half height.

v=u+at\\\Rightarrow v=at

Since the height are equal

\frac{1}{2}at^2=u1.1+\frac{1}{2}\times a\times 1.1^2\\\Rightarrow \frac{1}{2}at^2=at1.1+\frac{1}{2}\times a\times 1.1^2\\\Rightarrow 0.5t^2-1.1t-0.605=0\\\Rightarrow 500t^2-1100t-605=0

t=\frac{11\left(1+\sqrt{2}\right)}{10},\:t=\frac{11\left(1-\sqrt{2}\right)}{10}\\\Rightarrow t=2.65, -0.45

Time taken to fall the first half is 2.65 seconds

Total time taken to fall is 2.65+1.1 = 3.75 seconds.

When an object is thrown with a velocity upwards then the velocity of the object at the point to where it was thrown becomes equal to the initial velocity.

v^2-u^2=2as\\\Rightarrow a=\frac{v^2-u^2}{2s}\\\Rightarrow a=\frac{0^2-240^2}{2\times \frac{8}{12}}\\\Rightarrow a=-43200\ ft/s^2

Magnitude of acceleration is -43200 ft/s²

5 0
3 years ago
Other questions:
  • When astronomers observe the spectra of distant galaxies,they notice that the hydrogen emission lines are shifted noticeably tow
    8·1 answer
  • PLEASE HELP WILL MEDAL !!!
    14·2 answers
  • UV radiaGon having a wavelength of 120 nm falls on gold metal, to which electrons are bound by 4.82 eV. What is the maximum kine
    12·1 answer
  • While drag racing out of the parking lot I timed myself at a speed of
    14·1 answer
  • Kamala puts on inline skates and stands facing a wall. When she pushes against the wall, she rolls backward. Why does pushing ha
    13·2 answers
  • Which is a group pragram acoholics recover in
    5·1 answer
  • Niobium metal becomes a superconductor when cooled below 9K. Itssuperconductivity is destroyed when the surface magnetic fieldex
    8·1 answer
  • A mover loads a 100 kg box into the back of a moving truck by
    9·1 answer
  • What is the magnetic force of a 30m long power line that carries a current of 50A. The magnetic field runs perpendicular to the
    14·1 answer
  • what factors go into decisions about changing what materials should be used when building a products​
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!