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kherson [118]
3 years ago
8

Elements are organized on the periodic table based on their properties. Which statement correctly predicts and explains the chem

ical reactivity of two metals?
Rubidium (Rb) is more reactive than strontium (Sr) because strontium atoms must lose more electrons.
Sodium (Na) is more reactive than magnesium (Mg) because sodium atoms must gain more electrons.
Calcium (Ca) is less reactive than potassium (K) because potassium atoms must lose more electrons.
Beryllium (Be) is less reactive than lithium (Li) because beryllium atoms must gain more electrons.
Physics
1 answer:
ExtremeBDS [4]3 years ago
7 0

Answer:Rubidium or answer 1

Explanation:took quiz

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Which mass is undergoing to the greatest amount of acceleration ??
lina2011 [118]

Answer:

Option (3)

Explanation:

Formula used to calculate acceleration is,

F = ma

Where F = force exerted on a mass

m = mass

a = acceleration due to force exerted on the mass

Option (1),

When F = 100 N and m = 100 kg

100 = 100a

a = 1 m per sec²

Option (2)

For F = 1 N and m = 100 kg

1 = 100a

a = \frac{1}{100}

a = 0.01 m per sec²

Option (3)

For F = 100 N and m = 1 kg

100 = 1(a)

a = 100 m per sec²

Option (4)

For F = 1 N and m = 1 kg

1 = 1(a)

a = 1 m per sec²

Therefore. acceleration in Option (3) is the maximum.

4 0
3 years ago
1. Which of the following are examples of natural resources
wariber [46]

Answer:

1) Coal is a natural resource, so is wood, wind energy, soil, salt, fluorite, water, and copper

2) Solar energy, natural gas, and wind energy are all renewable

3) Salt is non - renewable as is synthetic diamonds and plastic  

4) I think it would be number

5) Based on their mineral, chemical, and textural composition

Explanation:

Hope this helps :)

4 0
3 years ago
Three cars (car F, car G, and car H) are moving with the same velocity when the driver suddenly slams on the brakes, locking the
nika2105 [10]

Answer:

a) Option D

b) Option A

Explanation:

a) Option D

Because a massive car will have more inertia which will make the car move faster but a massive car simultaneously will have more friction thereby restricting its movement in the forward direction. Hence, all the three cars will move equal distance.

b) Option A, Car F

Being most massive car, the frictional force required to stop the car will be highest.  

4 0
3 years ago
Similarity between mass and charge
IrinaK [193]
I think there is only one.
<span>
</span>Both are conserved<span>.</span>

5 0
3 years ago
Why does a truck that is traveling in the opposite direction to you on the street appear to be moving faster than it would if yo
svet-max [94.6K]
Hmmm...maybe it would be because since you're staying still then things appear to go by quickly.
5 0
3 years ago
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