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3 years ago

Determine la densidad de un objeto cuya masa es de 10 kg y tiene un volumen de 120 cm3

Physics

1 answer:

NNADVOKAT [17]3 years ago

7 0

Answer:

dttydghcghcghdytdftygfvghxk,ghc

Explanation:

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The tape in a videotape cassette has a total

Softa [21]

Answer:

1.37 rad/s

Explanation:

Given:

Total length of the tape is, $d= 297$ m

Total time of run is, $t = 2.1$ hours

We know, 1 hour = 3600 s

So, 2.1 hours = 2.1 × 3600 = 7560 s

So, total time of run is, $t= 7560$ s

Inner radius is, $r = 10\ mm = 0.01\ m
$

Outer radius is, $R = 47\ mm = 0.047\ m
$

Now, linear speed of the tape is, $v =\frac{d}{t}=\frac{297}{7560}=0.039\ m/s
$

Let the same angular speed be $\omega$ .

Now, average radius of the reel is given as the sum of the two radii divided by 2.

So, average radius is, $R_{avg}=\frac{R+r}{2}=\frac{0.047+0.01}{2}=\frac{0.057}{2}=0.0285\ m
$

Now, common angular speed is given as the ratio of linear speed and average radius of the tape. So,

$\omega=\dfrac{v}{R_{avg}}\\\\\\\omega=\dfrac{0.039}{0.0285}\\\\\\\omega=1.37\ rad/s
$

Therefore, the common angular speed of the reels is 1.37 rad/s.

5 0

4 years ago

During low-intensity activity, your body obtains most of its energy from

Gemiola [76]

Carbohydrates, in cellular respiration.

3 0

3 years ago

Noticing details of a situation while completely missing many other details is what kind of observation

trapecia [35]

Answer:

tunnel vision observation

8 0

3 years ago

Calculate the net force experienced by Mr. Ferrari if he has a mass of 100 kg and an acceleration of 3.5 m/s/s.

saveliy_v [14]

The answer is 350. the formula for net force is f=ma which means you multiply the mass times he acceleration. 100 times 3.5 is 350

7 0

3 years ago

Read 2 more answers

A 1000-kilogram truck accelerates uniformly from rest, reaching a speed of 50 meters per second in 10 seconds. During the 10 sec

Nata [24]

Answer:

250 m

Explanation:

1. First, we have to calculate the acceleration:

$\boxed{\mathsf{v=v_o+a\cdot t}}$

where:

v = present velocity

vo = initial velocity

a = acceleration

t = time

2. Let us use given information and substitute in the expression above. Hence:

$\mathsf{50=0+a\cdot10}\\\\\mathsf{50=10\cdot a}\\\\\mathsf{a=\dfrac{50}{10}}\\\\\therefore \boxed{\mathsf{a=5\,m/s^2}}}$

3. Now we can calculate traveled distance with <u>Torricelli's equation</u>:

$\boxed{\mathsf{v^2=v_o^2+2\cdot a \cdot d}}$

where:

v = present velocity

vo = initial velocity

a = accelerarion

d = distance

4. So, we get:

$\mathsf{50^2=0^2+2\cdot 5 \cdot d}\\\\\mathsf{2500=10\cdot d}\\\\\mathsf{d=\dfrac{2500}{10}}\\\\\therefore \boxed{\mathsf{d=250\,m}}$

<u>Conclusion</u>: during 10 seconds the truck has traveled a distance of 250 m.

Have a nice day! : )

8 0

3 years ago