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Gala2k [10]
3 years ago
15

Among the alkali earth metals, the tendency to react with other substances

Physics
2 answers:
kati45 [8]3 years ago
5 0
Answer is D hope this helps  



padilas [110]3 years ago
4 0
Answer D
In alkali earth metals reacrivity increases from top to bottom (opposite of b)
This is because as you go down, the electron shells increase by 1 shell. The farther away a shell is from the nucleus, the higher its tendency to react.
D is true because the more reactive an alkali metal is, the more vigorous the reaction will be with water.
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_______________ is the name for the permanent destruction and clearing of forests
VMariaS [17]

Answer:

<h2>Deforestation</h2>

Explanation:

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According to <em>Vocal Media,</em>

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<em>Deforestation is the permanent destruction of forests in order to utilize the land or trees. Typically, deforestation is clearing a lot of trees without the intention of establishing future growth. Harvesting, forest fires, and insect infestations do not count as deforestation because the affected areas will eventually grow back.</em>

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4 0
3 years ago
A 440 kg roller coaster car is going 26 m/s when it reaches the lowest point on the track. If the car started from rest at the t
yawa3891 [41]
The only thing acting as the roller coaster gets to the bottom is gravity thus
acceleration is 9.81

so u use the formula
vf^2 = vi^2 + 2abetaD
thus
distance = vf^2 - vi^2 divided by 2a
so 26^2 - 0^2 divided by 2(9.81m/s)
equals 676 divided by 2(9.81m/s)
= 34.45463812m
then use the appropriate 3 sig digs
so 34.5m
hopes this helps 
6 0
3 years ago
A ferris wheel has a radius of 36 feet and completes one revolution every 5.4 minutes. what is the speed of the ferris wheel (in
KIM [24]
In order to find the speed per minute you will have to divide the two numbers together. You need to do 36/5.4 so the answer will be around 6.7 feet per minute. 
4 0
3 years ago
The specific latent heat of fusion of ice is 3.3×105J/kg
Dima020 [189]
Vai c fude
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7 0
4 years ago
Calculate kinetic energy of a planet using 5.97 x 10^24 kg mass and v at 30.29 km s-1
kiruha [24]

Answer:

2.74 × 10^33 J

Explanation:

the formula to calculate kinetic energy is:

1/2mv²

m= mass (kg)

v= velocity (m/s)

given that,

m = 5.97 × 10^24

v = 30.29 km s-1

  = 30290 m s-1

1/2× 5.97 × 10^24 × 30290²

=2.74 × 10^33 J

4 0
2 years ago
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