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2 years ago

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Which of the following is true about all of the outer planets?A.Much of the material in these planets is solid.B.The surface of

these planets is rocky.C.They have many moons.D.They all rotate in the same direction.

1 answer:

Lisa [10]2 years ago

4 0

The awnsers is D all the planet's in the solar system rotate the same direction or else they would bump into each other

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How did Aristotle contribute to science?

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He made pioneering contributions to all fields of philosophy and science, he invented the field of formal logic, and he identified the various scientific disciplines and explored their relationships to each other. Aristotle was also a teacher and founded his own school in Athens, known as the Lyceum.

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A fisherman moves from one end of a boat to another

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A ball is tossed int the air and rises to a height of 12m. How long is the ball in the air?

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How does a mathematical model help you understand the science concepts? Give an example.

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2 years ago

A 6.0 kg bowling ball moving at 3.5m/s to the right makes a collision, head-on, with a stationary 0.70 kg bowling pin. If the ba

devlian [24]

Answer:

The velocity of the pin will be 6.26 m/s in the right direction.

Explanation:

Let's use the momentum conservation equation.

$p_{i}=p_{f}$

Initially, we have:

$p_{i}=m_{b}*v_{ib}$

Where:

m(b) is the ball mass
v(ib) is the initial velocity of the ball

Now, the final momentum will be:

$p_{f}=m_{b}*v_{fb}+m_{p}*v_{fp}$

Where:

m(p) is the pin mass
v(fb) is the final velocity of the ball

v(fp) is the final velocity of the pin

Then, using the equation of the conservation we have:

$m_{b}*v_{ib}=m_{b}*v_{fb}+m_{p}*v_{fp}$

$6*3.5=6*2.77+0.7*v_{fp}$

$6*3.5=6*2.77+0.7*v_{fp}$

$v_{fp}=6.26 m/s$

Therefore the velocity of the pin will be 6.26 m/s in the right direction.

I hope it helps you!

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2 years ago