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3 years ago

The picture shows a student working in the lab.

Physics

2 answers:

algol133 years ago

6 0

1. she doesn't have safety googles .
2. the chems are spilled

Elanso [62]3 years ago

3 0

Answer:

There could be up to four violations if you count the following

1. Her hair is not in pony tail, which could potentially cause the student to set their hair on fire.

2. The student is not wearing lab safety googles/ eye protection.

3. The student has spilled numerous items on the table and has not cleaned them up.

4. The student has a flammable object, the paper towels, on the table with her while she is operating the burner.

Explanation:

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Why the object will not return to its original position?<br>why does the centre of mass fall?

dusya [7]

Answer:

the object will not return to the original position because it will not have any forces helping it to go up the hill

the center of mass falls since it is going downwards

Hope this helps!! have a great day

Explanation:

8 0

4 years ago

A long, thin solenoid has 950 turns per meter and radius 3.00 cm. The current in the solenoid is increasing at a uniform rate of

REY [17]

Answer:

Part a)

$E = 0.188 \times 10^{-3} N/CPart b)[tex]E = 0.376 \times 10^{-3}$ N/C

Explanation:

As we know that the magnetic field near the center of the solenoid is given as

$B = \mu_0 ni$

Also we know by equation of Faraday's law

EMF induced in the closed loop will be equal to rate of change in magnetic flux

so we have

$EMF = A\frac{dB}{dt}$

so we have

$\int E. dL = \pi r^2 (\mu_0 n \frac{di}{dt})$

$E. (2\pi r) = \pi r^2 (\mu_0 n \frac{di}{dt})$

$E = \frac{\mu_0 n r}{2} \frac{di}{dt}$

Part a)

At r = 0.500 cm

we have

$E = \frac{4\pi \times 10^{-7} (950) (0.500 \times 10^{-2})}{2}(63)$

$E = 0.188 \times 10^{-3} N/C$

Part b)

At r = 1.00 cm

we have

$E = \frac{4\pi \times 10^{-7} (950) (1.00 \times 10^{-2})}{2}(63)$

$E = 0.376 \times 10^{-3}$ N/C

5 0

3 years ago

Which of the following is a complex machine? 1) piano 2) bottle opener 3) shoehorn 4) doorknob

xeze [42]

1. piano. that is the answer is my mind

5 0

4 years ago

Read 2 more answers

draw a labelled ray diagram to locate the image of an object formed by a convex lens of focal length 20cm when the object is pla

azamat

<h3><u>Answer</u> :</h3>

<u>Focal length of convex lens is taken positive.</u>

$:\implies\sf\:\dfrac{1}{v}-\dfrac{1}{u}=\dfrac{1}{f}$

$:\implies\sf\:\dfrac{1}{v}-\dfrac{1}{(-30)}=\dfrac{1}{20}$

$:\implies\sf\:\dfrac{1}{v}=\dfrac{1}{20}-\dfrac{1}{30}$

$:\implies\sf\:\dfrac{1}{v}=\dfrac{3-2}{60}$

$:\implies\:\boxed{\bf{\gray{v=60\:cm}}}$

7 0

3 years ago

a car traveling at 24 m/s starts to decelerate steadily. It comes to a complete stop in 6 seconds what is its acceleration?

Irina18 [472]

We can solve for the acceleration by using a kinematic equation. First we should identify what we know so we can choose the correct equation.

We are given an original velocity of 24 m/s, a final velocity of 0 m/s, and a time of 6 s. We and looking for acceleration (a) in m/s^2.

The following equation has everything we need:

$v_f=v_i + at$

So plug in the known values and solve for a:

0 = 24 + 6a

-24 = 6a

a = -4 m/s^2

8 0

4 years ago