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3 years ago

8

Is sandstone a mineral

1 answer:

kow [346]3 years ago

3 0

Sandstone is a sedimentary rock composed of sand-size grains of mineral, rock, or organic material. It also contains a cementing material that bin

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sukhopar [10]

Answer: Debate and discussions on climate change are very important among scientists.

Explanation: Many scientific opinions have expressed in the form synthesis reports, by scientific bodies both national and international standing, and also by debate and surveys of opinion among climate scientists. The aim is to mitigate against climate change and creating awareness of the adverse effect on our enivornment.

Universities, scientists and laboratories contribute their quota to the overall scientific opinion through peer-reviewed publications, and the areas of collective agreement and relative certainty are summarised in respected reports and surveys carried out.

7 0

3 years ago

Adult size basketballs have a radius of approximately 12 cm.

gulaghasi [49]

Answer:

The volume of air needed is 603 cm³.

Explanation:

In general, basketball has a size of a sphere, so you have to find the volume of sphere using the formula :

$v = \frac{4}{3} \pi {r}^{2}$

$let \: r = 12$

$v = \frac{4}{3} \times \pi \times {12}^{2}$

$v = \frac{4}{3} \times \pi \times 144$

$v = 192\pi$

$v = 603 \: {cm}^{3} (near. \: whole \: no)$

8 0

3 years ago

3. A space vehicle is traveling at 4300 km/h relative to Earth when the exhausted rocket motor (mass 4m) is disengaged and sent

kvv77 [185]

Answer: Vce= 4234.4km/hr or 1180m/s

Explanation:

Mass of rocket motor Mr= 4m

Mass of control module Mc= m

Initial velocity of spaceship relative to earth Vs= 4300km/hr

Final velocity of command module relative to the rocket motor Vrc = 82km/hr

Total mass of spaceship M= 4m+m= 5m

Using law of conservation of momentum;

MVs= MrVre + McVce eqn1

Vre = Vrc+Vce eqn2

Where Vce is velocity of control room relative to the earth and Vre is velocity of rocket motor relative to the earth

Substituting eqn2 to eqn1, we have.

MVs= Mr(Vrc+Vce) +McVce

MVs= MrVrc+MrVce+McVce

Making Vce the subject of formula.

Vce = (MVs-MrVrc)/(Mc+Mr)

Substituting the values we have,

Vce = (5m×4300km/hr - 4m×82km/hr)/ (m+4m)

Vce = 21172m/5m

Vce= 4234.4km/hr or 1180m/s

3 0

3 years ago

After a devastating earthquake hit Haiti in 2010, the economic leaders of the free world forgave Haiti's debt. Will this action

Pani-rosa [81]

Answer: It will help them because they can use the debt money to take care of their people

Explanation: You own someone and your citizens lives with disease and because of earthquake those who you own forgave you

7 0

3 years ago

Read 2 more answers

Which of the following can cause damage days or months after a large earthquake?. a.. the arrival of surface waves.. b.. liquefa

AveGali [126]

An aftershock can cause damage days or months after a large earthquake. The correct answer is D, an aftershock.

4 0

4 years ago