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givi [52]
4 years ago
15

A scientific blank must be testable and capable of being proven false?

Physics
1 answer:
coldgirl [10]4 years ago
4 0
Answer: a scientific theory must be testable and capable of being proven false.
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What is the mass of the sun plus all the planets in solar system?
Savatey [412]
It’s a very huge mass
3 0
2 years ago
Read 2 more answers
A gymnast pushed down on a trampoline during a routine. What is the reaction
kompoz [17]

Answer:

d) The trampoline pushes back up on the gymnast.

Explanation:

According to Newton's third law of motion; for every action force, there is an equal and opposite reaction force. The action force and reaction force are reciprocal to one another i.e. they act oppositely to one another. The reaction force acts in an opposite direction to the action force and vice versa.

In this question, a gymnast pushed down on a trampoline during a routine. This is called the ACTION FORCE. In conformity to Newton's third law, the trampoline pushes back up on the gymnast. This opposite force is called the REACTION FORCE.

6 0
3 years ago
A beach ball with a volume of 5,000 cm3 is pushed underwater. What is the magnitude of the buoyant force pushing upwards? The de
Kobotan [32]
<h2>Hello!</h2>

The answer is:

The buoyant force is equal to 49N.

<h2>Why?</h2>

The buoyant force is the force that pushes upwards and object when it's submerged in water, this force is always trying to move the object to the surface of the liquid or water.  We must consider that the volume of water or liquid displaced is equal to the volume of the submerged object.

We can calculate the buoyant force using the following formula:

F_{B}=Density*VolumeDisplaced*GravityAcceleration

Where,

Density is the density of the water or liquid.

Volume displaced is equal to the volume of the submerged object.

Gravity acceleration is the acceleration due to gravity.

So, from the statement we know that:

VolumeDisplaced=BeachBallVolume=5000cm^{3}\\\\Density=1\frac{gram}{cm^{3} }=\frac{0.001kg}{cm^{3} }\\\\g=9.8\frac{m}{s^{2} }

Now, substituting and calculating we have:

F_{B}=Density*VolumeDisplaced*GravityAcceleration

F_{B}=0.001\frac{kg}{cm^{3}*} *5000cm^{3}*9.8\frac{m}{s^{2} }

F_{B}=0.001\frac{kg}{cm^{3}*} *5000cm^{3}*9.8\frac{m}{s^{2} }

F_{B}=49\frac{Kg.m}{s^{2}}=49N

Hence, we have that the correct answer is:

The buoyant force is equal to 49N.

Have a nice day!

7 0
4 years ago
Given a force of 88 N and an acceleration of 4 m/s2, what is the mass?
WARRIOR [948]
Newton's second law of motion says:

Force = (mass) x (acceleration)

88 = (mass) x (4)

Divide each side by 4 :

Mass = 22 kg.
7 0
4 years ago
Earth orbits the sun once every
Karo-lina-s [1.5K]

Answer:1 trip around the earth is an angular displacement of 2*pi

3.6525*10^2 days

I

Explanation:24 h/1 day * 3.600*10^3 s/1h = 3.156*10^7 s

Angular speed = angular displacement / time

Angular speed = 2*pi rads / 3.156*10^7 s = 1.9910*10^-7 rad/s

3 0
3 years ago
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