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wolverine [178]
2 years ago
11

On cool spring mornings, veils of fog can often be seen rising above warm lakes and ponds. this type fog is an example of ______

__ fog. radiation convection advection evaporation
Physics
1 answer:
brilliants [131]2 years ago
8 0
<h2>Answer: evaporation</h2>

Explanation:

Evaporation fog occurs when surface air is much colder and relatively less saturated than water. Then, when the water evaporates, it inmediately condenses again in small drops of water that stay suspended very close to this body of water.

In other words: This type of fog occurs when cold air moves over warmer water. And it is this difference in temperature that contributes to the formation of fog over the lakes, especially near the polar regions.

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A 50 g ice cube floats in 195 g of water in a 100 g copper cup; all are at a temperature of 0°C. A piece of lead at 96°C is drop
olchik [2.2K]

Answer:

The mass of the lead will be "1.127 kg".

Explanation:

The given values are:

(Ice) m₁ = 50 g i.e.,

0.050 kg

(Water) m₂ = 195 g i.e.,

0.190 kg

(Copper cup) m₃ = 100 g i.e.,

0.100 kg

m₁, m₂ and m₃ at temperature,

t₁ = 0°C

Temperature of lead,

t₂ = 96°C

Temperature of Final equilibrium,

t₃ = 12°C

Let m₄ be the mass of the lead.

On applying formula, we get

⇒  m_{1}L+m_{1}s_{1} \Delta t+m_{2}s_{2} \Delta t+m_{2}s_{2} \Delta t=m_{4}s_{4} \Delta t

On putting the estimated values, we get

⇒  (0.050)(334)+(0.050)(4186)(12-0)+(0.190)(4186)(12-0)+(0.100)(387)(12-0)=m_{4} (128)(96-12)

⇒  16.7+2511.6+9544.08+50.7=10752\times m_{4}

⇒  12,123.08=10752\times m_{4}

⇒  m_{4}=\frac{12,123.08}{10752}

⇒  m_{4}=1.127 \ kg

3 0
2 years ago
The lighting needs of a storage room are being met by six fluorescent light fixtures, each fixture containing four lamps rated a
Amanda [17]

Answer:

amount of energy  = 4730.4 kWh/yr

amount of money = 520.34 per year

payback period = 0.188 year

Explanation:

given data

light fixtures = 6

lamp = 4

power = 60 W

average use = 3 h a day

price of electricity = $0.11/kWh

to find out

the amount of energy and money that will be saved and simple payback period if the purchase price of the sensor is $32 and it takes 1 h to install it at a cost of $66

solution

we find energy saving by difference in time the light were

ΔE = no of fixture × number of lamp × power of each lamp × Δt

ΔE is amount of energy save and Δt is time difference

so

ΔE = 6 × 4 × 365 ( 12 - 9 )

ΔE = 4730.4 kWh/yr

and

money saving find out by energy saving and unit cost that i s

ΔM = ΔE × Munit

ΔM = 4730.4 × 0.11

ΔM = 520.34 per year

and

payback period is calculate as

payback period = \frac{excess initial cost}{\Delta M}

payback period = \frac{32 + 66}{520.34}

payback period = 0.188 year

8 0
2 years ago
PLEASE ANSWER ASAP!! Is a spring force a balanced force? Please, please help!
Jobisdone [24]

Explanation:

The forces acting on a massless object (spring, hook, string or wire, if considered massless) will always balance. Balanced forces acting on an object cause it to compress or stretch. The forces acting on a mass will never cancel.

3 0
2 years ago
Examples of buoyancy
Lana71 [14]
A ball would be something that floats in warter                                                                                                                                                            
5 0
2 years ago
Two spheres are attracted to each other through the force of gravity. If you triple the distance between the two spheres what ha
garik1379 [7]

Answer:

its a

Explanation:

because spheres dont really have a magnetic force

8 0
2 years ago
Read 2 more answers
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