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Arisa [49]
3 years ago
14

Do you think potassium is more or less reactive then sodium?

Physics
2 answers:
Anna35 [415]3 years ago
3 0

Answer:

Potassium is more reactive

Explanation:

Artist 52 [7]3 years ago
3 0

Answer:

more reactive

Explanation:

In potassium, the outermost electron is better shielded from the attractive force of the nucleus. 

So potassium can be converted to ionic form more readily than sodium. Hence, potassium is more reactive than sodium.

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6th grade science pls help
oee [108]

Answer:

D

Explanation:

I hope you get a good grade!

6 0
2 years ago
A wind turbine has a total input power of 2 500 kW.
Sonbull [250]

Answer:

Output power = 500 KW

Explanation:

Given the following data;

Efficiency = 20%

Input power = 2500 KW

To find the output power;

Efficiency = \frac {Out-put \; power}{In-put \; power} * 100

Substituting into the equation, we have;

LET Output power = OP

20 = \frac {OP}{2500} * 100

Cross-multiplying, we have;

20 * 2500 = OP * 100

50000 = OP * 100

OP = \frac {50000}{100}

Output power = 500 KW

6 0
3 years ago
How are pendulums used in society? Give an example of a real-world pendulum that transfers a lot of energy.
mart [117]

Answer:

An old clock that has a swinging pendulum

Explanation:

7 0
3 years ago
If the acceleration of the projective is: a = c s m/s 2 Where c is a constant that depends on the initial gas pressure behind th
Sedbober [7]

Answer:

c = 4,444.44

Explanation:

You have the following expression for the acceleration of the projectile:

a=cs   (1)

s: distance to the ground of the projectile

To find the value of the constant c you use the following formula:

v^2=v_o^2+2a \Delta s   (2)

vo: initial  velocity = 0 m/s

v: final speed = 200 m/s

Δs: distance traveled by the projectile = 3m - 1.5m = 1.5m

You replace the expression (1) into the expression (2):

v^2=2(cs)\Delta s

You do the constant c in the last equation, then you replace the values of v, s and Δs:

c=\frac{v^2}{2s\Delta s}=\frac{(200m/s)^2}{2(3m/s^2)(1.5m)}=4444.44

6 0
3 years ago
A ball is dropped off the side of a bridge.<br> After 1.55 s, how far has it fallen?
KengaRu [80]

Answer:11.7 meters

Explanation: Gravitational acceleration (g)

9.8 m/s²

Initial velocity (v₀)

0 ft/s

Height (h)

11.77225 m

Time of fall (t)

1.55 sec

Velocity (v)

15.19 m/s

6 0
3 years ago
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