3 years ago

Which statement is true about the difference between calcium carbonate and calcium oxide?

Physics

1 answer:

Kay [80]3 years ago

7 0

Kalsium Karbonat is true

You might be interested in

What is a substance that when mixed with water turns blue litmus paper red

alekssr [168]

When blue litmus paper is dipped in acid the paper turns red.

hope this helps :)

5 0

3 years ago

What would be the current of the same wire if it was moved up towards the magnet instead of through the magnetic field?

Aleks04 [339]

Answer:

0 v

Explanation:

3 0

3 years ago

Um carro percorre um trecho de 450 km em escalar media do carro

Aleks04 [339]

Average speed of the car is defined as the ratio of total distance and total time

So here we will have

$v_{avg} = \frac{distance}{time}$

now we know that

$distance = 450 km$

time = 5 h

now from above equation we will have

$v = \frac{450 km}{5 h} = 90 km/h$

so the average speed will be 90 km/h

7 0

3 years ago

What temperature increase is necessary to increase the power radiated from an object by a factor of 8?

Aleks04 [339]

To solve this problem it is necessary to apply the concepts related to the Power defined from the Stefan-Boltzmann equations.

The power can be determined as:

$P = \sigma T^4$

Making the relationship for two states we have to

$\frac{P_1}{P_2} = \frac{T_1^4}{T_2^4}$

Since the final power is 8 times the initial power then

$P_2 = 8P_1$

Substituting,

$\frac{1}{8} = \frac{T_1^4}{T_2^4}$

$T_2 = T_1 8*(\frac{1}{4})$

$T_2 = 1,68T_1$

The temperature increase would then be subject to

$\Delta T = T_2-T_1$

$\Delta T = 1.68T_1 -T_1$

$\Delta T = 0.68T_1$

The correct option is D, about 68%

7 0

3 years ago

A football is kicked 18m/s at 20 degrees. what is the acceleration rate in the horizontal direction

fomenos

If we ignore air resistance, as we always do,
there is no horizontal acceleration.

Gravity acts only in the vertical direction, and
no other forces act on the ball after the punt.

6 0

3 years ago