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2 years ago

14

n the lab, you performed a trial where the fan was turned off partway through the run. What did the graph for this trial look li

ke? How does the slope of the graph change, and why?

1 answer:

dolphi86 [110]2 years ago

3 0

Answer:

the graph would lower down if we are talking about speed because the velocity stops going and theres no more kinetic energy to cause any speed

Explanation:

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Pls help i am in8th grade k12

omeli [17]

Answer:

please i dont understand this

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2 years ago

A rubber toy duck is at rest on an inclined plane. When the angle of inclination of the plane is increased to 36.0°, the toy duc

ch4aika [34]

Answer

toy begins to slide when the plane is at an angle of 36.0°

at this point the toy has just overcome the static friction

$f_s = \mu_s N$

$f_s = \mu_s mgcos \theta$

since toy begins to slide

$f_s = mgsin \theta$

now on comparing

$mgsin \theta = \mu_s mgcos \theta$

$\mu_s = tan \theta$

$\mu_s = tan (36^0)$

$\mu_s = 0.726$

as the body is moving at constant velocity acceleration will be zero

so now,

$m g sin \theta - f_k = ma$

$m g sin \theta - \mu_k mg cos\theta = 0$

$\mu_k = tan \theta$

$\mu_k = tan (29^0)$

$\mu_k = 0.554$

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2 years ago

Suppose, the same angular momentum is transferred to two rotating bodies of different moment of inertia , how will you compare t

Sonbull [250]

Answer:

As per the law of conservation of angular momentum, the angular velocity will be higher for the body with a lower moment of inertia and vice versa.

Explanation:

Angular momentum L of a body is given by:

$L=I\times \omega$

Now when the same angular momentum is transferred to two different bodies with different moment of inertia, the body with a higher moment of inertia will have lower angular velocity and vice versa.

4 0

2 years ago

Which of the following is true about scientific models? (2 points) Select one: a. Models are used to simplify the study of thing

Vanyuwa [196]

Question: Which of the following is true about scientific models? Select one: A) Models are used to simplify the study of things. B) Computer models are the most reliable kind of model. C) Models explain past, present and future information. D) A model is accurate if it does not change over time.

Answer: <u>A) Models are used to simplify the study of things.</u>

<em>Hope this helps!.</em>

<em>~~~~~~~~~~~~~~~~~~~~~~</em>

<em>~A.W~ZoomZoom44</em>

5 0

3 years ago

Read 2 more answers

Select the correct answer from each drop-down menu. A device that uses electricity and magnetism to create motion is called a __

Fittoniya [83]

<h3><u>Answer;</u></h3>

1st drop; Motor

2nd drop; Electricity

A device that uses electricity and magnetism to create motion is called a <u>motor</u>. In a reverse process, a device that uses motion and magnesium can be used to create <u>electricity</u>.

<h3><u>Explanation</u>;</h3>

<em><u>Motors are device which use electricity and magnetism to create motion.</u></em> They pass alternating current through opposing pairs of magnets to create a rotating magnetic field which creates a magnetic field in the rotor of a motor, making it to spin around.
<em><u>Electric motors work in a reverse process by using motion and magnetism to generate electricity. </u></em>When a coil or loops of wire are exposed to a changing magnetic field, an electrical current arises or is induced.

5 0

2 years ago