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Semmy [17]
3 years ago
11

Which element is LEAST likely to react with Magnesium?

Physics
1 answer:
salantis [7]3 years ago
6 0

Answer:

my only true question is b

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Which planet in our solar system, discovered in 1781, was named after the greek god of the sky?.
Anon25 [30]

Answer:

i think the planet is Uranus

3 0
1 year ago
What happens to a liquid when it loses energy
NeTakaya
It can solidify, it depends on the tempeture.
8 0
3 years ago
A ball rolls off the edge of a table with a fairly large horizontal velocity. Which of the following statements are true? (Selec
Degger [83]

Answer:

A.The vertical velocity is constantly increasing as the ball falls.

B.The horizontal velocity does not noticeably change as the ball falls.

G.The horizontal velocity does not affect how long it will take the ball to fall to the floor.

H.The velocity vector of the ball changes as it travels through the air.

Explanation:

As the ball is projected horizontally so here the vertical component of the velocity is zero

So the time to reach the ground is given as

H = \frac{1}{2} gt^2

so we will have

t = \sqrt{\frac{2H}{g}}

so this is the same time as the ball is dropped from H height

Since there is no force in horizontal direction so its horizontal velocity will always remain constant while vertical velocity will change at constant rate which is equal to acceleration due to gravity.

So overall the velocity vector will change due to net acceleration g

4 0
3 years ago
1. The choice of materials for an exciting playground slide should __________.
gavmur [86]
  1. have a large coefficient of kinetic friction between cloth and the slide material
  2. 40(0.3+0.5)=40(0.8)=32N
  3. F-applied=Wbook/μk
  4. When the tire is locked, the frictional force is greater but the car cannot be steered
4 0
2 years ago
Read 2 more answers
What % of an object’s mass is above the water line if the object’s density is 0.82g/ml?
Sladkaya [172]

To develop this problem we will apply the Archimedes model. As well as the definitions of Weight based on mass and acceleration. The first in turn will be considered under the relationship of Density and Volume. From the values given we have to:

\rho_w =1 g/mL \rightarrow \text{Water Density}

\rho_o = 0.82g/mL \rightarrow \text{Object density}

Since it is in equilibrium, the weight of the object will have a reaction from the water, which will cause the sum of forces between the two objects to be zero, therefore

\sum F= 0

F_w-F_o = 0

F_w = F_o

m_w g = m_og

\rho_w V_w g = \rho_o V_o g

The value of gravity is canceled because it is a constant

\frac{V_w}{V_o} = \frac{\rho_o}{\rho_w}

\frac{V_w}{V_o} = \frac{0.82}{1}

\frac{V_w}{V_o} = 0.82

The portion of the object that is submerged corresponds to 82%, while the portion that is visible, above the water level will be 18%

4 0
3 years ago
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