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natulia [17]
4 years ago
15

What is the function of a hypothesis in the scientific inquiry process

Physics
1 answer:
Ber [7]4 years ago
6 0
In scientific inquiry, hypothesis acts as the road map that guide the researcher and show him how to go about his scientific investigation. Hypothesis provides a testable explanation for an observation and serves as the starting point for the scientific investigation.
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A playground merry-go-round has a mass of 120 kg and a radius of 1.80 m and it is rotating with an angular velocity of 0.500 rev
Artist 52 [7]

To answer this problem, we must remember that momentum is conserved. Therefore,

Initial momentum = Final momentum

In this case we use angular momentum which it is defined as:

Momentum =0.5 m ω^2

So finding for final angular velocity, ωf:

mi * ωi^2 = mf * ωf^2

120 kg * (0.5 rev / s)^2 = (120 kg + 22 kg) * ωf^2

ωf^2 = 0.2113

ω<span>f = 0.46 rev/s</span>

7 0
4 years ago
Everything in the universe is made up of what A.atoms B.minerals C.nitrogen ​
Montano1993 [528]

Answer: A) Atoms.

Explanation:

5 0
3 years ago
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A certain radio wave has a frequency of 2.0 x 10^6 Hz. What is its wavelength?
evablogger [386]

<span>1.    </span>Electromagnetic radiation are represented in waves. Each type of wave has a certain shape and length. The distance between two peaks in a wave is called the wavelength. This value is equal to the speed of light divided by the frequency.

<span>
Wavelength = c/f
Wavelength = 3x10^8 / </span><span>2.0 x 10^6</span>

Wavelength = 150 m

5 0
4 years ago
In the laboratory, a ball is dropped onto a force-sensing platform several times, each time hitting a different surface (foam, f
NeX [460]

Answer:

Graphing the momentum against the change in moment yields a linear relationship.

Explanation:

This is an impulse experiment,

          I = ∫ F .dt

where the force and time of the collision are measured, therefore if we assume an average force the integral reduces to

           I = F t

Furthermore, the momentum is equal to the change in moment of the ball, this change in moment can be found using the energy relations measuring the height of the ball and calculating its speed, in the two intervals for the descent and for the exit, possibly the heights are different so the moment change is different from zero.

Starting point. Higher

          Em₀ = U = mgh

Lower end point, just before hitting the scale

          Em_{f} = K = ½ m v²

in the path in the air there is no friction

          Em₀ = Em_{f}

          m g h = ½ m v²

          v = \sqrt{2gh}

this height is different for the descent and ascent of the ball, so we have two moments

         Δp = p_{f} - p₀

         Δp = m (v_{f} -v₀)

         

therefore we have the relationship

         

         I = Δp

Graphing the momentum against the change in moment yields a linear relationship.

5 0
3 years ago
What is the purpose of setting a deadline for your goal
Nutka1998 [239]

Well, when you want to accomplish a goal, you can't take forever to do it now can you? No. The purpose of setting a deadline for your goal is for motivation. You become motivated to do it, instead of putting it off for later. You want to get it done in a reasonable amount of time.

3 0
4 years ago
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