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kari74 [83]
3 years ago
14

Main-group elements from Period 3 of the periodic table are highlighted. Which element is a highly reactive metal?​

Physics
2 answers:
Deffense [45]3 years ago
6 0

Answer:sodium

Explanation:AP3X

tatuchka [14]3 years ago
5 0

Answer:

sodium

Explanation:

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morpeh [17]

Answer:

The increase in the gravitational potential energy is 29.93 joules.

Explanation:

Given that,

Mass of the box, m = 2.35 kg

It is lifted from the floor to a tabletop 1.30 m above the floor, h = 1.3 m

We need to find the increase the gravitational potential energy. Initial it will placed at ground i.e. its initial gravitational potential is equal to 0. The increase in the gravitational potential energy is given by :

U=mgh

U=2.35\ kg\times 9.8\ m/s^2\times 1.3\ m

U = 29.93 Joules

So, the increase in the gravitational potential energy is 29.93 joules. Hence, this is the required solution.

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Est ce qu’un cricket c’est un consommateur
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Explanation:

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An initially uncharged 3.47-μF capacitor and a 6.43-kΩ resistor are connected in series to a 1.50-V battery that has negligible
harkovskaia [24]

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I(t)=io*Exp(-t/τ)

and also we consider that io=V/R=(1.5/6.43*10^3)

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Finally the time to reduce the current to 2.57% of its initial value is obtained from:

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Step 2: Apply NEwton's second law Apply ∑Fy = may , what should ay be equal to, since the block doesn't move in the y direction
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Answer:

∑Fy = 0, because there is no movement, N = m*g*cos (omega)

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We can solve this problem with the help of a free body diagram where we show the respective forces in each one of the axes, y & x. The free-body diagram and the equations are in the image attached.

If the product of mass by acceleration is zero, we must clear the normal force of the equation obtained. The acceleration is equal to zero because there is no movement on the Y-axis.

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Which statement about allele combinations is accurate?
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Offspring get two alleles for each trait – one from each parent.

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