2 years ago

The purpose of many scientific investigations is to test a {n}

Physics

2 answers:

Scorpion4ik [409]2 years ago

5 0

Answer:

Scientific investigation is a quest to find the answer to a question using the scientific method.

Explanation:

the scientific method is a systematic process that involves using measurable observations to formulate, test or modify a hypothesis.

Gnoma [55]2 years ago

3 0

Hypothesis , I believe the answer is hypothesis

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Answer:

12.5 meters

Explanation:

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3 years ago

3. What is the velocity of a wave that has a frequency of 750 Hz and a wavelength of 45.7 cm?

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Explanation:

v=(750)(45.7)

v=34275

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2 years ago

Describe five things that you do to make yourself feel warmer or cooler.

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Buy a fan or heater, get a blanket, take a shower, go outside, go by the fireplace

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3 years ago

You are an industrial engineer with a shipping company. As part of the package- handling system, a small box with mass 1.60 kg i

Kisachek [45]

Answer:

v = 0.84m/s, v(max)= 0.997m/s

Explanation:

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$W_s = \frac{1}{2}kc^2$

Work lost to friction:

$W_f =\mu mg(c-x)$

Energy:

$E = W_s-W_f=\frac{1}{2}kc^2 -\mu mg(c-x)=\frac{1}{2}mv^2+\frac{1}{2}kx^2$

(a) Solve for v:

$v=\sqrt{\frac{k}{m}(c^2-x^2)-2\mu g(c-x)}$

(b) Solve $\frac{dv}{dx}=0$ for x:

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$\frac{dv}{dx}=0$ if:

$\mu g-\frac{k}{m}x = 0$

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3 years ago

The inductive reactance of the circuit is exactly twice the resistance: XL=2R. Adjust the phasor that represents the voltage acr

SVETLANKA909090 [29]

Answer:

∅= $63.43^{0}$

Explanation:

z=impedance

$x_{l}$ =2R

R=R

The resultant of the resistances in the circuit is called impedance

$x_{l}$ is inductive reactance of the circuit

R is the resistance of the resistor

z= $\sqrt{xl^{2}+R^2 }$

z= $\sqrt{2R^{2}+R^2 }$

Z= $\sqrt{5R^2}$

Z=R $\sqrt{5}$ ohms

tan∅=2R/R

tan∅=2

∅=Tan^-1(2)

∅= $63.43^{0}$

phase angle is ∅= $63.43^{0}$

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3 years ago