Ask question

Ask question

All categories

3 years ago

14

scientists have estimated that the area of Earth covered by water is 70.98 percent ,or 362,031,100 km^2.Express this value in sc

entific notation

2 answers:

luda_lava [24]3 years ago

7 0

70.87% = 7.087 x 10⁻¹

Alborosie3 years ago

3 0

3.620311*10^8 km^2
Since their osnt a period at the end of this number then the two 0's at the end are not counted as significant numbers

You might be interested in

Dmitry [639]

equal and opposite reaction.

5 0

3 years ago

PLSSSSS HELP!!!!!!! ASAP!!!!! MARK BRAINLIEST!!!!

Ymorist [56]

Answer: I would say the answer is B.

Explanation: It looks and sounds the most correct.

5 0

3 years ago

Which landform is the farthest north?

quester [9]

The North Pole would be your answer

7 0

2 years ago

A 2 kg rubber ball is thrown at a wall horizontally at 3 m/s, and bounces back the way it came at an equal speed. A 2 kg clay ba

Lyrx [107]

Answer:

THE RUBBER BALL

Explanation:

From the question we are told that

The mass of the rubber ball is $m_r = 2 \ kg$

The initial speed of the rubber ball is $u = 3 \ m/s$

The final speed at which it bounces bank $v - 3 \ m/s$

The mass of the clay ball is $m_c = 2 \ kg$

The initial speed of the clay ball is $u = 3 \ m/s$

The final speed of the clay ball is $v = 0 \ m/s$

Generally Impulse is mathematically represented as

$I = \Delta p$

where $\Delta p$ is the change in the linear momentum so

$I = m(v-u)$

For the rubber is

$I_r = 2(-3 -3)$

$I_r = -12\ kg \cdot m/s$

=> $|I_r| = 12\ kg \cdot m/s$

For the clay ball

$I_c = 2(0-3)$

$I_c = -6 \ kg\cdot \ m/s$

=> $| I_c| = 6 \ kg\cdot \ m/s$

So from the above calculation the ball with the a higher magnitude of impulse is the rubber ball

8 0

4 years ago

PLEASE HELP show the calculation of the number of neutrons of hydrogen

xz_007 [3.2K]

The answer is 2.3 hope this helps texted me and tell me if it’s right

7 0

3 years ago