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3 years ago

How does vapor release energy into the atmosphere

Physics

2 answers:

Oduvanchick [21]3 years ago

4 0

I would say a because i just had this

geniusboy [140]3 years ago

3 0

The correct answer is C, Condesation

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Do you think toxicity is a qualitative or quantitative property? explain

Tomtit [17]

Answer:

Toxicity is a quantitative property

Explanation:

Qualitative property of a object cannot be measured it can just be observed

Quantitative property of a substance can be measured and be assigned a numerical value .
The toxicity level of a substance can be measured and be assigned a numeral value

3 0

3 years ago

A bicyclist is traveling 10 m/s at 30 degrees

AysviL [449]

Explanation:

The momentum is defined as the product between the mass and velocity:

p = m·v

Let's calculate his total momentum:

ptot = 70kg · 10m/s = 700 kg·m/s

Now we know that he's traveling 30 degrees south-east.

The momentum along the y axis will be:

py = p·cos30° = 606 kg·m/s

Along the x-axis:

px = psin30° = 350 kg·m/s

8 0

2 years ago

Consider a father pushing a child on a playground merry-go-round. The system has a moment of inertia of 84.4 kg · m². The father

natulia [17]

Answer:

Part a)

$KE = 101.4 J$

Part b)

$N = 0.043 revolution$

Part c)

F = 2.7 N

Explanation:

Part a)

As we know that the rotational kinetic energy of the merry go round is given as

$KE = \frac{1}{2}I\omega^2$

$KE = \frac{1}{2}84.4(\omega^2)$

here we know that

$\omega = 2\pi(\frac{14.8}{60})$

$\omega = 1.55 rad/s$

Now we have

$KE = \frac{1}{2}(84.4)(1.55^2)$

$KE = 101.4 J$

Part b)

Now we know that work done due to torque = change in kinetic energy

$W = KE_f - KE_i$

$\tau (2N\pi) = 101.4 - 0$

$375(2\pi N) = 101.4$

$N = 0.043 revolution$

Part c)

In order to stop it in four revolutions we have

$\tau(2\pi N) = \Delta KE$

$FR(2\pi N) = 101.4$

$F(1.5)(2\pi \times 4) = 101.4$

F = 2.7 N

3 0

2 years ago

Take the following measured gauge (or gage) pressures and convert them to absolute pressures in both kPa and psi units for an am

mamaluj [8]

Answer:

Explanation:

Given

ambient Pressure =98.10 kPa

(a)gauge pressure 152 kPa

we know

Absolute pressure=gauge pressure+Vacuum Pressure

$P_{abs}$ =152+98.10=250.1 kPa or 36.27 psi

(b) $P_{gauge}$ =67.5 Torr or 8.99 kpa

as 1 Torr is 0.133 kPa

$P_{abs}$ =8.99+98.10=107.09 kPa or 15.53 psi

Thus absolute pressure=98.10-10=88.10 kPa or 12.77 psi

as 1 kPa is equal to 0.145 psi

(d) $P_{vaccum}$ =0.84 atm or 85.113 kPa

as 1 atm is equal to 101.325 kPa

$P_{abs}$ =98.10-85.11=12.99 kPa or 1.88 psi

6 0

3 years ago

What would happen if you changed the position of the screen, but kept the other factors the same?

sashaice [31]

Answer:

I wish I could help but iam srry

4 0

2 years ago