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
MariettaO [177]
3 years ago
9

Type a nerve fibers in humans can conduct nerve impulses at speeds up to 140 m/s. (a) how fast are the nerve impulses in miles p

er hour? 313.17 correct: your answer is correct. mi/h (b) how far (in meters) can the impulses travel in 3.1 ms?
Physics
1 answer:
andrew-mc [135]3 years ago
3 0
Answer:
a. 313.171081 miles/hour
b. 0.434m

To calculate the speed in miles per hour, you need to change meterinto miles (1m= 0.086992mile) , then second into hour(1s= 1/3600h). The calculation would be:
140 m/s x 0.086992mile/m : 1/3600 s/hour= 313.171081 miles/hour.

To calculate the next question you need to know that mili second= 1/1000 second. Then the calculation would be:
140m/s x 3.1ms x 1/1000= 0.434m
You might be interested in
The flagpole is held vertical by two ropes. The first of these ropes has a tension in it of 100 N and is at an angle of 60° to t
KatRina [158]

Answer:

T₂ = 123.9 N,  θ = 66.2º

Explanation:

To solve this exercise we use the law of equilibrium, since the diaphragm does not appear, let's use the adjoint to see the forces in the system.

The tension T1 = 100 N, we create a reference frame centered on the pole

X axis

       T₁ₓ - T_{2x} = 0

        T_{2x}= T₁ₓ

Y axis y

      T_{1y} + T_{2y} - 200N = 0

      T_{2y} = 200 -T_{1y}

let's use trigonometry to find the component of the stresses

         sin 60 = T_{1y} / T₁

         cos 60 = t₁ₓ / T₁

         T_{1y} = T₁ sin 60

         T1x = T₁ cos 60

         T_{1y}y = 100 sin 60 = 86.6 N

         T₁ₓ = 100 cos 60 = 50 N

for voltage 2 it is done in the same way

         T_{2y} = T₂ sin θ

         T₂ₓ = T₂ cos θ

we substitute

         

           T₂ sin θ= 200 - 86.6 = 113.4

           T₂ cos θ = 50              (1)

to solve the system we divide the two equations

           tan θ = 113.4 / 50

           θ = tan⁻¹ 2,268

           θ = 66.2º

we caption in equation 1

           T₂ cos 66.2 = 50

           T₂ = 50 / cos 66.2

           T₂ = 123.9 N

8 0
3 years ago
Movement of a molecule against its concentration gradient can occur through Select one or more: a. facilitated diffusion b. pass
uranmaximum [27]

Answer:

The answer to your question is:

Explanation:

There are two kinds of cell transport passive transportation and active transportation.

Passive transportation does not need energy because molecules move from higher concentration to lower concentration.

Active transportation needs energy because molecules moves against concentration.  

a. facilitated diffusion It's an example of passive transportation so this answer is wrong.

b. passive transport Molecules move in favor of concentration so this answer is wrong.

c. osmosis is another example of passive transport so this answer is wrong.

d. simple diffusion it's another example of passive transport, so it's wrong this answer.

e. active transport this is the right answer.

5 0
3 years ago
A bullet with a mass of 5 gramsand speed of 560 m/sis fired horizontally atablock of wood with a mass of 2 kg. The block rests o
Anni [7]

Momentum is conserved if and only if sum of all forces which are exserted on system equals zero. In our situation there are only internal forces, so by Newton's third law their vector sum is 0.

So mv=(m+M)v' \Leftrightarrow v'=\frac{mv}{m+M}.

Kinetic energy of system at first: \frac{mv^2}{2}=784\;\textbf{J}. After: \frac{(m+M)\frac{m^2v^2}{(m+M)^2} }{2}=\frac{m^2v^2}{2(m+M)}\approx 1,96\; \textbf{J}. The secret is that other energy is in work of deformation forces (they in turn heat a bullet and a block).

Answer is A)

5 0
3 years ago
Beers of snakes thunderstorms darkness in water are classified as blank phobias
Scrat [10]

I believe all of these would be known as specific phobias.

4 0
3 years ago
a star has a distance of 30 parsecs and a apparent magnitude of 3 --what would its absolute magnitude be?
Alborosie

The absolute magnitude of the star would be +5.

8 0
1 year ago
Other questions:
  • Centripetal force is a centering force related to acceleration. The centripetal force when driving prevents which of the followi
    14·1 answer
  • Explain how depression arises from a combination of both genetic and environmental factors
    5·2 answers
  • a circuit contains 2 ohm and 4 ohm resistors connected in parallel, find the total resistance & the amount of current in eac
    8·1 answer
  • Christopher conducts an experiment in which he tests how much sugar dissolves at different temperatures of water. One step requi
    14·2 answers
  • What are the three layers of the sun's atmosphere, in order of increasing distance from the surface?
    14·1 answer
  • A person jogs 10 meters in 5 seconds calculate her avarage speed​
    5·2 answers
  • The voltage across a resistor is found to be 1.5 V. It is also found that there is a charge of 2 Coulombs passing through the re
    8·1 answer
  • A typical meteor that hits the earth's upper atmosphere has a mass of only 2.5 g, about the same as a penny, but it is moving at
    15·1 answer
  • For a star with a parallax angle of 1/2 of an at arcsecond, what will be its distance in parsec?
    12·1 answer
  • A motor has a rotor (with armature) of moment of inertia ????m . The rotor is attached to a gear box of gear ratio G > 1. The
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!