3 years ago

Question 12…..plz help

Physics

1 answer:

elena-14-01-66 [18.8K]3 years ago

5 0

Answer:

1 I am not sure but I tried

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Metals in group 1 on the periodic table most commonly form which type of ion

givi [52]

Answer:

Group 1 - the alkali metals. The Group 1 elements in the periodic table are known as the alkali metals.

Explanation:

7 0

3 years ago

Suppose I have a vector that is 7 units long and that makes an angle of +30 degrees from the positive x-axis. I want to add to t

Vinil7 [7]

Answer:

sum of these two vectors is 6.06i+3.5j-3.5i+6.06j = 2.56i+9.56j

Explanation:

We have given first vector which has length of 7 units and makes an angle of 30° with positive x-axis

So x component of the vector $=7cos30^{\circ}=7\times 0.866=6.06$

y component of the vector $=7sin30^{\circ}=7\times 0.5=3.5$

So vector will be 6.06i+3.5j

Now other vector of length of 7 units and makes an angle of 120° with positive x-axis

So x component of vector $=7cos120^{\circ}=7\times -0.5=-3.5i$

y component of the vector $=7sin120^{\circ}=7\times 0.866=6.06j$

Now sum of these two vectors is 6.06i+3.5j-3.5i+6.06j = 2.56i+9.56j

5 0

4 years ago

If you're falling in a forest and there's nobody around, do you ever really crash, or even make a sound?

zalisa [80]

Answer:

yes bc there are branches and twigs surrounding you

Explanation:

♡♡♡please mark as brainliest♡♡♡

7 0

4 years ago

Read 2 more answers

Malachi uses some glue to fix a broken plate. He puts the glue under a desk lamp but the glue doesn't dry. Then he puts the glue

Semmy [17]

Answer:

The sun gives off a type of light that carries energy, and the light from the desk lamp does not

Explanation:

I got it off a Quizlet hope this helps!!

4 0

3 years ago

What is half-life? a. Half-life is a term that describes the time it takes for half of a particle to disintegrate c. Half-life i

Alisiya [41]

Well, half-life is the radioactivity of an identified isotope that decreases by half of the actual value.
So, your answer would be C.

4 0

4 years ago