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goldenfox [79]
3 years ago
5

Non-metals can form cations when combined with metals and anions when combined with other non-metals.

Physics
2 answers:
sineoko [7]3 years ago
5 0
I believe it's false because a lot<span> of products nowadays own and use these metals in their product.</span><span>
</span><span>
</span><span>Hope This Helps!!!   :)</span>
exis [7]3 years ago
4 0
Well i think it is false caus ebunch of products these day have metals incorparded in the product
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How much energy can be stored in a spring with k = 470 n/m if the maximum possible stretch is 17.0 cm ?
MrRissso [65]
The strain energy stored in a linear spring is
SE = (1/2)*k*x²
where
k =  the spring constant
x =  the extension (or compression) of the spring

Given:
k = 470 N/m
x = 17.0 cm = 0.17 m

Therefore
SE = 0.5*(470 N/m)*(0.17 m)² = 6.7915 J

Answer:  6.8 J (nearest tenth)

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The water in the plumbing in a house is at a gauge pressure of 300,000 pa. What force does this cause on the top of the tank ins
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Answer:

60 000 N

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earnstyle [38]

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3 years ago
A spring balance consists of a pan that hangs from a spring. A damping force Fd = −bv is applied to the balance so that when an
Citrus2011 [14]

Answer:

b ≈ 64 Kg/s

Explanation:

Given

Fd = −bv

m = 2.5 kg

y = 6.0 cm = 0.06 m

g = 9.81 m/s²

The object in the pan comes to rest in the minimum time without overshoot. this means that damping is critical (b² = 4*k*m).

m is given and we find k from the equilibrium extension of 6.0 cm (0.06 m):

∑Fy = 0 (↑)

k*y - W = 0    ⇒   k*y - m*g = 0   ⇒   k = m*g / y

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⇒   k = 408.75 N/m

Hence, if

b² = 4*k*m    ⇒     b = √(4*k*m) = 2*√(k*m)

⇒     b = 2*√(k*m) = 2*√(408.75 N/m*2.5 kg)

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