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4 years ago

For which questions could a scientist develop a testable hypothesis? Check all that apply.

Physics

2 answers:

grandymaker [24]4 years ago

8 0

Answer:

How long is a day on Neptune

What is the composition of Jupiter's atmosphere

Which planet has the most moons?

Explanation:

Sentence option one is not a testable hypothesis because the answer would be an opinion. Sentence option 4 can not be tested because planets do not, and can not have opinions.

AlexFokin [52]4 years ago

6 0

Answer:

sentences 2,3, and 5

Explanation:

You can run a test to see if it is true or not for the correct answers.. You cannot test a planets feelings. They do not have feelings. Also, prettiest planet is an opinion. There is no wrong or right with that. Hope this helps.

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A body of mass 2 kilograms moves on a circle of radius 3 meters, making one revolution every 5 seconds. Find the magnitude of th

harkovskaia [24]

Answer: $F_c=9.375 N$

Explanation:

Given

mass of body $m=2 kg$

radius of circle $r=3 m$

Time Period $T=5 s$

suppose $\omega$ is the angular velocity of revolution

therefore $\omega T=2\pi$

$\omega =\frac{2\pi }{5}=1.25 rad/s$

Centripetal acceleration $a_c=\omega ^r$

$a_c=1.25^2\times 3$

$a_c=4.68 m/s^2$

therefore centripetal $F_c=m\omega ^2\times r$

$F_c=9.375 N$

7 0

3 years ago

Blood vessels that carry blood away from the heart are called

White raven [17]

Answer:

The blood vessels dat carry blood away from the heart are non as arteries, while those dat carry blood back to the heart are veins.

Explanation:

The ARTERIES are major blood vessels connected to your heart.

8 0

3 years ago

Mt. Everest is 29,028 feet high. How many miles is this?

Viefleur [7K]

Mount. everest is 5.499 miles

6 0

3 years ago

Read 2 more answers

Gas A and gas B have the same temperature.

Damm [24]

Answer:

Where is the picture?

Explanation:

4 0

3 years ago

A rock is thrown straight up into the air. At the

Aleonysh [2.5K]

The answer is 3.

When a ball is thrown into the air, there is no friction (there's nothing rubbing against it), so the only force acting on the ball is gravity, which aims to pull the ball back down. Since this is the only force, the answer will equal the gravity acting on the ball. Since "weight" is defined as just that (the gravity acting on something), the answer is 3, the magnitude of the rock's weight (or the force of gravity).

6 0

4 years ago