Why are the very first stars thought to have been much more massive than the sun? (a the clouds that made them were much more massive than todays star-forming clouds. (b the temperatures of the clouds that made them were higher because the clouds consisted entirely of hydrogen and helium. (c star-forming clouds were much denser early in time?

Answers

Answer 1

Answer: I think the correct answer would be that the temperature of the clouds that made the very first stars where thought to be higher since the clouds are made up of hydrogen and helium. Hope this answers the question. Have a nice day.

Answer 2

Answer: The main reason why the very first stars where thought to be much bigger than the sun because of the temperature of the clouds that these stars were made of were higher. The clouds that mostly form these stars consist of entirely hydrogen and helium. The answer for this would be option B.

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How to find initial velocity

Answers

Answer:

Velocity= Distance divided by time divided by degree or direction.

Explanation:

Speed=DIstance divided by time

1.Initial Velocity Formula Questions:
2.Answer: The initial velocity can be found using the formula:
3.vi = vf - at.
4.Answer: The initial velocity can be found using the formula:
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You are driving a 4000 kg pickup truck on a cold winter day when the coefficient of static friction for tires on the icy road is only 0.13. What is fastest you can drive around a bend whose radius of curvature is 50 m?

Answers

Answer:

8 m/s

Explanation:

$m$ = mass of the pickup truck = 4000 kg

$\mu_(s)$ = Coefficient of static friction between tires and ice road = 0.13

$r$ = Radius of curvature = 50 m

The frictional force between tires and ice road provides the necessary centripetal force to move in circle. hence

centripetal force = frictional force

$(mv^(2))/(r) = \mu_(s) mg\n(v^(2))/(r) = \mu_(s) g\n(v^(2))/(50) = (0.13) (9.8)\nv^(2) = (0.13) (9.8) (50)\nv = 8 ms^(-1)$

What is your mass in kilograms if you weigh 120 pounds on Earth?

Answers

1 kilogram weighs 2.205 pounds on Earth. 120/2.205 = 54.431 kilograms.

How long does it take an airplane to fly 5000 miles if it maintains a speed of 240 miles per hour

Answers

With a 30 mph head wind it takes the plane 18.52 hours to fly 5000 miles. ANSWER 2: With a 30 mph tail wind it takes the plane 15.15 hours to fly 5000 miles.

What is relative velocity?

Answers

Relative velocity is the velocity of an object or observer B in the rest frame of another object or observer A

Answer:

the velocity of a moving body relative to another body is called relative velocity.

What is the temperature of a gas in which the atoms are moving very very slowly?

Answers

Cold.
Example: A frozen object (such as ice) is solid. Its molecules move extremely slow because the object itself isn't moving... It's like the skin on your bod... Imagine that wiggling and writhing on your bones. It's not like a gas, that can move freely and has no specific form or hold.
So again, the answer is Cold.

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