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hjlf
3 years ago
10

the speed of light is 3x10^8 meters per secound.The sun is approximately 230,000,000,000 meters from mars .How many secounds doe

s it take for sunlight to reach mars?
Mathematics
1 answer:
enyata [817]3 years ago
7 0
You got to use dimensional analysis...

<span>( 230,000,000,000 Meters ) x ( Seconds / 3*10^8 Meters ) = ANSWER </span>

<span>The meters cancel out and you are left with Seconds. divide and that's your answer :)</span>
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Hi thank you for helping me​
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Answer:

Step-by-step explanation:

4 + 2x < 6 + 6x

4 - 4x < 6

-4x < 2

x > -1/2

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The average kinetic energy of the atoms in an object determines its _____.
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What does 4+9+(16 divide 4-8-3) x 5 equal?
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Answer:

-22

Step-by-step explanation:

4 + 9 + (16 ÷ 4 - 8 - 3) × 5

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3 years ago
A number cube has faces numbered 1 through 6, and a coin has two sides, "heads" and "tails". The
Mama L [17]

Answer:

The <em>required probability</em> is \dfrac{1}{12}.

Step-by-step explanation:

Let <em>A </em>be the event of rolling the number cube.

Let <em>B</em> be the event of tossing the coin.

Total number of possibilities of rolling the number cube and tossing the coin are <em>12 </em>here.

\{(1,H),(2,H),(3,H),(4,H),(5,H),(6,H),(1,T),(2,T),(3,T),(4,T),(5,T),(6,T)\}

where <em>H</em> means Head on toss of coin and <em>T</em> means Tails on toss of coin.

Formula for probability of an event <em>E</em> is:

P(E) = \dfrac{\text{Number of favorable cases}}{\text {Total number of cases}}

Here, we have to find the probability of event 'E' i.e. getting a 6 on number cube and heads on coin.

Number of favorable cases are <em>1 </em>and total cases are <em>12</em>.

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6 0
2 years ago
When a force of 30 N acts on a certain object the acceleration of the object is 5m/s2 if the force is changed to 54 N what will
PtichkaEL [24]

Answer:

The correct answer is 9 m per second^{2}

Step-by-step explanation:

Force is defined by mass of an object times it's acceleration.

Let the mass of the object be m kilograms.

When a force of 30 N acts on a certain object the acceleration of the object is 5 m per second^{2}

∴ 30 = m × 5

⇒ m = 6.

If the force is changed to 54 N, let the acceleration of the object be x  m per second^{2}.

∴ 54 = m × x

⇒ x = \frac{54}{6} = 9

Thus when the force is 54 N, the acceleration of the object is 9 m per second^{2}.

6 0
3 years ago
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