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3 years ago

Which option identifies a factor that would make the reasoning for a claim scientifically invalid?

Physics

1 answer:

lora16 [44]3 years ago

7 0

Answer:

C)a lack of supporting empirical evidence

Explanation:

A scientific reasoning can be rendered invalid if empirical evidences are lacking. Empirical evidences are usually a product of observations or experiments.

When these are lacking or cannot be gathered, scientific observations or sometimes reasoning can be rendered as invalid because there is no ground to prove them.

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When a hammer thrower releases her ball, she is aiming to maximize the distance from the starting ring. Assume she releases the

Taya2010 [7]

Answer:

The angular velocity is 15.37 rad/s

Solution:

As per the question:

$\theta = 54.6^{\circ}$

Horizontal distance, x = 30.1 m

Distance of the ball from the rotation axis is its radius, R = 1.15 m

Now,

To calculate the angular velocity:

Linear velocity, v = $\sqrt{\frac{gx}{sin2\theta}}$

v = $\sqrt{\frac{9.8\times 30.1}{sin2\times 54.6}}$

v = $\sqrt{\frac{294.98}{sin109.2^{\circ}}} = 17.67\ m/s$

Now,

The angular velocity can be calculated as:

$v = \omega R$

Thus

$\omega = \frac{v}{R} = \frac{17.67}{1.15} = 15.37\ rad/s$

8 0

3 years ago

The position x of a particle moving along x axis varies with time t as x = Asin(wt) , where A and w are constants . The accelera

Elodia [21]

Let's see

$\\ \rm\Rrightarrow x=Asin(\omega t)\dots(1)$

Now we know the formula of acceleration

$\\ \rm\Rrightarrow \alpha=-A\omega^2sin(\omega t)$

$\\ \rm\Rrightarrow \alpha=-Asin(\omega t)\times \omega^2$

From eq(1)

$\\ \rm\Rrightarrow \alpha=-x\omega^2$

$\\ \rm\Rrightarrow \alpha=-\omega^2x$

6 0

2 years ago

Read 2 more answers

As the Moon revolves around the Earth, it also rotates on its axis. Why is it that the same side of the Moon is always visible f

dexar [7]

Answer: The speed of the moon's rotation keeps the same side always facing Earth.

Explanation: Please mark me brainiest

6 0

3 years ago

Read 2 more answers

11. Scientists put a sample of water into a sealed tank. Water can be a solid, liquid, or gas. At first, the water was a liquid.

leva [86]

Answer:

c . slower and started moving in place.

Explanation:

Matter can exist generally in three phases, as a solid, liquid or gas. But it can be transformed from one phase to another by the removal or application of heat energy.

The water was initially in a liquid form in the sealed tank until energy was transferred out of the substance. Thus, this causes a change of state in which the water turns to a solid. Whereby during the process, the molecules of the water moved slowly until they are fixed at a point, and vibrates individually at their individual point.

Therefore the molecules of water moved slower and stated moving in place (i.e vibrating at a point). The water turns to an ice.

3 0

4 years ago

Karo-lina-s [1.5K]

Answer:

Check Explanation.

The two statements given aren't true.

Explanation:

Although the question seems incomplete, I will address the concept of energy transfer during a wave's propagation.

The particles involved in wave's propagation move back and forth perpendicularly to the way the wave is moving, but do not move (at least, no significant movement is noticeable) in the direction of the wave. The particles ‘participate’ in the wave propagation by bumping into one another and transferring energy. This is exactly why energy can be transferred, although the average position of the particles doesn’t change.

So, the particles of the medium do not absorb energy from the atmosphere and do not significantly move from one location to another.

Hope this Helps!!!

4 0

4 years ago