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____ [38]
3 years ago
5

Which one of the following parenting factors is associated with improved IQ scores in children?

Physics
1 answer:
lapo4ka [179]3 years ago
5 0
I would say B. A stable home and varied activities 
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As the left hand was put in hot water, warm thermoreceptors initiated signals, allowing you to identify the water in this pot as "warm." After awhile the thermoreceptors in your hands quieted down.

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What is instantaneous acceleration?
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4 0
3 years ago
A cylindrical specimen of a nickel alloy having
tia_tia [17]

Answer:

L = 0.475 m = 475 mm = 18.7 inches

Explanation:

A cylindrical specimen of a nickel alloy having an elastic modulus of 207 GPa and an original diameter of 10.2 mm (0.40 in.) will experience only elastic deformation when a tensile load of 8900 N (2000 lb ) is applied. Compute the maximum length of the specimen before deformation if the maximum allowable elongation is 0.25 mm (0.010 in).

E = 207 GPa = 207*10⁹ Pa

D = 10.2 mm = 0.0102 m

P = 8900 N

ΔL = 0.25 mm = 2.5*10⁻⁴ m

L = ?

We can use the Equation of the Hooke's Law

ΔL = P*L / (A*E)    ⇒   L = ΔL*A*E / P

⇒   L = (2.5*10⁻⁴ m)*(π*(0.0102 m)²*0.25)*(207*10⁹ Pa) / (8900 N)

⇒   L = 0.475 m = 475 mm = 18.7 inches

7 0
4 years ago
What is the magnitude of the electric force of attraction between an iron nucleus (q=+26e) and its innermost electron if the dis
iris [78.8K]

Answer:

The magnitude of the force on an electron is 0.069 N.

Explanation:

Given that,

Distance between 1.70 A from the plutonium nucleus, d=1.5\times 10^{-12}\ m

The number of electron in iron nucleus is +26e.

To find,

The magnitude of the force between an iron nucleus.

Solution,

Total charge in the plutonium nucleus is, q=26\times 1.6\times 10^{-19}=4.16\times 10^{-18}\ C. The electric force between charges is given by :

F=\dfrac{kq^2}{d^2}

F=\dfrac{9\times 10^9\times (4.16\times 10^{-18})^2}{(1.5\times 10^{-12})^2}

F = 0.069 N

So, the magnitude of the force on an electron is 0.069 N. Hence, this is the required solution.

4 0
3 years ago
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