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3 years ago

Which is a characteristic of iron?

2 answers:

6 0

Characteristics: Iron is a ductile, gray, relatively soft metal and is a moderately good conductor of heat and electricity. It is attracted by magnets and can be readily magnetized. The pure metal is chemically very reactive and rusts readily in moist air, forming red-brown oxides.

Zarrin [17]3 years ago

4 0

Rust,good conductor of heat and electricity.

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What landform has high elevation and high relief

serious [3.7K]

Mountains such as the rocky mountains

7 0

3 years ago

Read 2 more answers

Which of the following possibilities will form a triangle? (1 point)

Tpy6a [65]

Answer:

Side = 10 cm, side = 5 cm, side = 6 cm

Explanation:

Triangle is made up of three line segment. Three line segment can form a triangle only when sum of two small line segment is more than the third line segment.

a. Side = 10 cm, side = 5 cm, side = 6 cm

5 cm + 6 cm = 11 cm > 10cm

In the first option, the sum of two small sides is more than the third size, hence it will form a triangle.

Other options do not fulfil the same criteria, so they will not form a triangle.

Hence, the correct answer is "Side = 10 cm, side = 5 cm, side = 6 cm".

6 0

3 years ago

Why did Argentina have 5 presidents in 10 days?

MrMuchimi

Answer:

1) Fernando de la Rua, Argentina's president, resigned on December 20, 2001 after devaluing the peso and restricting withdrawals from banks.

2) As the vice-president had already resigned, the president of the Senate, Ramon Puerta, while Congress decided on the new president.

3) Congress decided to name Adolfo Rodriguez Saa as interim president.

4) He resigned on December 31, leaving the President of the Chamber of Deputies, Eduardo Camaño, as interim president.

5) On January 2nd, 2001, Eduardo Duhalde was named president by the Congress.

Explanation:

8 0

3 years ago

. If the fastest passenger aircraft can fly 0.45 km/s (1000 mph), how long would it take to reach the sun? The galactic center?

nadezda [96]

Answer:

The passenger aircraft would take 10.542 years to reach the Sun from the Earth.

The passenger aircraft would take $1.733\times 10^{10}$ years to reach the gallactic center.

Explanation:

The distance to the sun from the Earth is approximately equal to $1.496\times 10^{8}\,km$ , if the passenger travels at constant speed, then the time needed to reach the sun is calculated by the following kinematic formula:

$\Delta t = \frac{s}{v}$ (1)

Where:

$s$ - Travelled distance, measured in kilometers.

$v$ - Speed of the passenger aircraft, measured in kilometers per second.

$\Delta t$ - Travelling time, measured in seconds.

If we know that $s = 1.496\times 10^{8}\,km$ and $v = 0.45\,\frac{km}{s}$ , then the travelling time is:

$\Delta t = \frac{1.496\times 10^{8}\,km}{0.45\,\frac{km}{h} }$

$\Delta t = 3.324\times 10^{8}\,s$

$\Delta t = 3847.736\,days$

$\Delta t = 10.542\,years$

The passenger aircraft would take 10.542 years to reach the Sun from the Earth.

The distance between the Earth and the galactic center is approximately equal to $2.460\times 10^{17}\,km$ . If the passenger travels at constant speed and if we know that $s = 2.460\times 10^{17}\,km$ and $v = 0.45\,\frac{km}{s}$ , then the travelling time is: