What country is on botswana's northeastern border?

2. If both the mass and radius of the earth, each decreases by 50%, the acceleration due to gravity would (a) remain same (b) de

Scrat [10]

Answer:

(d) increase by 100%

Explanation:

$m_{i}$ = initial mass of earth = m

$m_{f}$ = final mass of earth = (0.5) m

$R_{i}$ = initial radius of earth = R

$R_{f}$ = final radius of earth = (0.5) R

$g_{i}$ = initial acceleration due to gravity of earth = g

$g_{f}$ = final acceleration due to gravity of earth

initial acceleration due to gravity of earth is given as

$g_{i} = \frac{Gm_{i}}{R_{i}^{2}}$ Eq-1

Final acceleration due to gravity of earth is given as

$g_{f} = \frac{Gm_{f}}{R_{f}^{2}}$ Eq-2

Dividing eq-1 by eq-2

$\frac{g_{i}}{g_{f}} = \frac{m_{i}}{m_{f}}\frac{R_{f}^{2}}{R_{i}^{2}}$

inserting the values

$\frac{g}{g_{f}} = \frac{m_{i}}{(0.5)m_{i}}\frac{(0.5)^{2}R_{i}^{2}}{R_{i}^{2}}$

$g_{f}$ = 2 g

So there is 100% increase

8 0

4 years ago

Which region in China is most affected by soil erosion?

-BARSIC- [3]

Answer: Guizhou province

Explanation: 44% of that region is is affected.

8 0

2 years ago

18. All of the following represent examples of the incidence of tax, EXCEPT for *

emmasim [6.3K]

Answer: See explanation

Explanation:

You didn't give the options and I couldn't find the exact question online. Let me try help out.

Incidence of tax is the impact that a tax simply has on how the economic welfare are being distributed. It refers to how tax is being distributed between the producers and the buyers of a particular good. It should be noted that the tax burden is shared by the sellers depending on the elasticity of the said product.

For example, in a situation whereby a $2 tax is imposed on each good a producer produces, if the producer then pass the tax to the final consumers when he raised the price of the goods by $2, we can simply say that such good has a price inelastic as the entire burden falls on the consumer.

Also, assuming the producer can't increase prices because such good is price elastic, that is, there will be a greater change in the quantity of the goods demanded, the burden will be felt by the producer alone. Here, we can say that the tax incidence falls on the producer.

6 0

3 years ago

Where is the geological feature where the Juan de fuca plate is punching under the North American plate

Aleonysh [2.5K]

Offshore you will have a deep oceanic trench where the two plates collide. Onshore you will have a mountain range (the cascades and Sierra nevadas) generated by thick skin deformation.

6 0

3 years ago

Please Help Quick!!

vagabundo [1.1K]

The International Date Line (IDL) is a line that separates the world into two hemispheres. It was first established in 1884 during the International Meridian Conference which was attended by 26 countries. It is located at the 180° longitude, which is the east of Greenwich, United Kingdom.

The International Date Line does not follow a straight line because it has to avoid countries or groups of islands. The main purpose of the zigzag pattern of the IDL is to avoid confusion regarding time.

The IDL is important because it's the basis for our time zones. Back in the nineteenth century, scientists as well other professionals in various industries proposed to adopt the 24 time zone system which centered on the IDL's principle of adopting the proper "time". The IDL divides the world into two dates: the East of the IDL is a day behind compared to the West of the IDL.

7 0

4 years ago