All categories

4 years ago

What is 8200 N/m2 expressed in kilopascals?

1 answer:

5 0

The S.I. unit for the measure of the pressure is the Pascal (Pa). 1 Pascal corresponds to
$1 Pa = 1 N/m^2$

We can convert the number given by the problem into Pascal:
$8200 N/m^2 = 8200 Pa$

And since $1 Pa = 10^{-3}kPa$ , we have
$8200 Pa = 8200 \cdot 10^{-3}kPa =8.2 kPa$

You might be interested in

Practice Problems

aleksandrvk [35]

(1) The distance traveled by Thomas is 190 m

(2) The displacement of Thomas is 100 m forward

(3) The velocity of Thomas is 0.056 m/s

<em>"Your question is not complete, check the image uploaded for the picture of this motion",</em>

(1) Distance is the sum of the total path covered.

first distance to cafe = 100 m

second distance to library = 45 m

third distance back to the cafe = 45 m

The total distance = 100 + 45 + 45 = 190 m

The distance traveled by Thomas is 190 m

(2) Displacement is the change in the position of an object;

Initial displacement forward = (100 + 45) m

Final displacement backward = 45 m

The total displacement = 145 m - 45 m = 100 m forward

The displacement of Thomas is 100 m forward

(3) The velocity of Thomas is calculated as the change in displacement per change in time.

the change in displacement = 100 m

the time of motion, t = 30 mins = 30 x 60 = 1800 s

$v = \frac{\Delta x}{\Delta t} = \frac{100 \ m}{1800 \ s} = 0.056 \ m/s$

Learn more here: brainly.com/question/17345815

4 0

3 years ago

A cannon of mass 6.43 x 103 kg is rigidly bolted to the earth so it can recoil only by a negligible amount. The cannon fires a 7

Nata [24]

Answer:

The velocity of the shell when the cannon is unbolted is 500.14 m/s

Explanation:

Given;

mass of cannon, m₁ = 6430 kg

mass of shell, m₂ = 73.8-kg

initial velocity of the shell, u₂ = 503 m/s

Initial kinetic energy of the shell; when the cannon is rigidly bolted to the earth.

K.E = ¹/₂mv²

K.E = ¹/₂ (73.8)(503)²

K.E = 9336032.1 J

When the cannon is unbolted from the earth, we apply the principle of conservation of linear momentum and kinetic energy

change in initial momentum = change in momentum after

0 = m₁u₁ - m₂u₂

m₁v₁ = m₂v₂

where;

v₁ is the final velocity of cannon

v₂ is the final velocity of shell

$v_1 = \frac{m_2v_2}{m_1}$

Apply the principle of conservation kinetic energy

$K = \frac{1}{2}m_1v_1^2 + \frac{1}{2}m_2v_2^2\\\\K = \frac{1}{2}m_1(\frac{m_2v_2}{m_1})^2 + \frac{1}{2}m_2v_2^2\\\\K = \frac{1}{2}m_2v_2^2(\frac{m_2}{m_1}) + \frac{1}{2}m_2v_2^2 \\\\K = \frac{1}{2}m_2v_2^2 (\frac{m_2}{m_1} + 1)\\\\2K = m_2v_2^2 (\frac{m_2}{m_1} + 1)\\\\v_2^2 = \frac{2K}{M_2(\frac{m_2}{m_1} + 1)} \\\\v_2^2 = \frac{2*9336032.1}{73.8(\frac{73.8}{6430} + 1)}\\\\$

$v_2^2 = 250138.173\\\\v_2 = \sqrt{250138.173} \\\\v_2 = 500.14 \ m/s$

Therefore, the velocity of the shell when the cannon is unbolted is 500.14 m/s

3 0

3 years ago

ccording to the law of inertia, if you see an object in motion slowing down, what can you conclude? a. That there must be some e

ivanzaharov [21]

Answer:

Explanation:

Newton's First law (aka law of inertia) says that any object, not subject to an external influence, must be keep in its present motion status (at rest or moving at constant speed along a straight line) forever.

So, if we see an object in motion slowing down, there must be an external infuence acting on it, that makes it slow down, like a friction force, for instance.

7 0

3 years ago

Which of the following best completes the sentence for Newton's Third Law? In every interaction,

nataly862011 [7]

Answer:

D in pairs

Explanation:

Forces always come in pairs - equal and opposite action-reaction force pairs.

3 0

3 years ago

Read 2 more answers

Describe the responses of the human ear to sound waves coming from the

maria [59]

If the sound comes from the right side, the waves reach the right ear before the left ear. if the sound comes from the left side, the waves reach the left ear before the right ear. The difference between the phases of waves reaching both ears is detected by the ears and then interpreted by the brain

8 0

3 years ago