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ElenaW [278]
3 years ago
5

Which ion channels mediate the falling phase of an action potontial?

Physics
1 answer:
White raven [17]3 years ago
4 0

Answer:

Voltage-gated K+ channels

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How long is a year on Earth and what journey does the Earth make in this space of time?
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A year on Earth is 365 and 1/4 days (rounded).  It corresponds to
one revolution of the Earth in our orbital path around the sun.
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Use term chloroplast and organelle in a sentence that describes cell function.
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Photosynthesis takes place inside of the chloroplast, an organelle that is only found in plant cells.
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To pull a nail out of a wood board a carpenter does 1000 J of work. The hammer he uses does 835 J of work. What is the efficienc
saw5 [17]

Answer:

83.5%

Explanation:

7 0
3 years ago
A pendulum of 50 cm long consists of small ball of 2kg starts swinging down from height of 45cm at rest. the ball swings down an
Ket [755]

Assuming that all energy of the small ball is transferred to the bigger ball upon impact, then we can say that:

Potential Energy of the small ball = Kinetic Energy of the bigger ball

Potential Energy = mass * gravity * height

Since the small ball start at 45 cm, then the height covered during the swinging movement is only:

height = 50 cm – 45 cm = 5 cm = 0.05 m

Calculating for Potential Energy, PE:

PE = 2 kg * 9.8 m / s^2 * 0.05 m = 0.98 J

Therefore, maximum kinetic energy of the bigger ball is:

<span>Max KE = PE = 0.98 J</span>

5 0
3 years ago
A well hole having a diameter of 5 cm is to be cut into the earth to a depth of 75 m. Determine the total work (in joules) requi
guapka [62]

Answer:

total work is 99.138 kJ

Explanation:

given data

diameter = 5 cm

depth = 75 m

density = 1830 kg/m³

to find out

the total work

solution

we know mass of volume is

volume = \frac{\pi}{4} d^2 dx

volume = \frac{\pi}{4} d^2 1830 dx

so

work required to rise the mass to the height of x m

dw = \frac{\pi}{4} d^2 1830 gx dx

so total work is integrate it with 0 to 75

w = \int\limits^{75}_{0} {\frac{\pi}{4} d^2 1830 gx dx}

w = \frac{\pi}{4} × 0.05² × 1830× 9.81× (\frac{x^2}{2})^{75}_0

w = 99138.53 J

so total work is 99.138 kJ

6 0
3 years ago
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