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ikadub [295]
3 years ago
6

Select the true statement regarding first-order neurons.

Physics
1 answer:
ki77a [65]3 years ago
8 0

Answer:midbrain

diencephalon

cerebrum

medulla oblongata

Explanation:

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What is the reactive force when a fish swims through water?
natima [27]
The answer is D

This is an example of Newton's third law of motion.

The active force is the fish against the water, so the reactive force would be the reverse, the equal force of the water on the fish.
7 0
3 years ago
How far (in meters) above the earth's surface will the acceleration of gravity be 21.0 % of what it is on the surface?
weeeeeb [17]

Answer:

7532m

Explanation:

Gravity on the surface of the earth with radius R is given by:

F_1=\frac{Gm_{earth}m_{object}}{R^2_{earth}}

Gravity a distance r above the surface:

F_2=\frac{Gm_{earth}m_{object}}{(R+r)^2}

How big is r if:

F_2=0.21\times F_1

You get the following equation:

R^2=0.21(R+r)^2=0.21R^2+0.41Rr+0.21r^2

Solve for r:

r^2+2Rr-\frac{79}{21} R^2=0

r=-R+\sqrt{R^2+\frac{79}{21}R^2}=-R+\sqrt{\frac{100}{21}R^2}=(\frac{10}{\sqrt{21}}-1)R

8 0
3 years ago
The mass of a large car is 1000 kg. How much force would be required to accelerate the car at a rate of 3msec2
pogonyaev

Answer:

3000 N

Explanation:

We have,

• Mass, m = 1000 kg

• Acceleration, a = 3 m/s²

We have to find force required, F.

\longrightarrow F = ma

\longrightarrow F = 1000 × 3 N

\longrightarrow F = 3000 N (Answer)

8 0
2 years ago
Why is acceleration called vector quantity
MrRissso [65]
Because it has both magnitude and direction. When an object has positive acceleration, the acceleration occurs in the same direction as the movement of the object.
7 0
3 years ago
At what frequency will a 31.0 mH inductor have a reactance of 637.0 Ω?
Shtirlitz [24]

Answer:

3272.4 Hz

Explanation:

L = 31 mH

XL = 637 ohm

XL = 2 π f L

f = XL / (2 π L)

f = 637 / ( 2 x 3.14 x 31 x 10^-3)

f = 3272.4 Hz

5 0
3 years ago
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