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2 years ago

Can someone please help me with this question thank you!

Physics

1 answer:

katovenus [111]2 years ago

7 0

<h2>at the highest point that is B</h2><h2>because PE is directly proportional to height </h2><h2>hope it helped</h2>

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Water enters a baseboard radiator at 180 °F and at a flow rate of 2.0 gpm. Assuming the radiator releases heat into the room at

beks73 [17]

Answer:

Temperature of water leaving the radiator = 160°F

Explanation:

Heat released = (ṁcΔT)

Heat released = 20000 btu/hr = 5861.42 W

ṁ = mass flowrate = density × volumetric flow rate

Volumetric flowrate = 2 gallons/min = 0.000126 m³/s; density of water = 1000 kg/m³

ṁ = 1000 × 0.000126 = 0.126 kg/s

c = specific heat capacity for water = 4200 J/kg.K

H = ṁcΔT = 5861.42

ΔT = 5861.42/(0.126 × 4200) = 11.08 K = 11.08°C

And in change in temperature terms,

10°C= 18°F

11.08°C = 11.08 × 18/10 = 20°F

ΔT = T₁ - T₂

20 = 180 - T₂

T₂ = 160°F

8 0

3 years ago

An automobile engineer found that the impact of a truck colliding at 14 km/h with a concrete pillar caused the bumper to indent

BlackZzzverrR [31]

Hello
Here we must use the equation of motion
v^2 = u^2 + 2as; where v is final velocity, u is initial velocity, a is the acceleratoin and is the distance travelled.
We select this one because the time of collision is unknown to us.
We know the truck stopped so its final velocity is 0; thus v = 0.
Converting the initial velocity to SI units, we get 3.89 m/s.
The distance traveled, s, is 0.062 meters.
Inserting all of these values into the equation,
0 = (3.89)^2 + 2(a)(0.062)
and solving for a, we get a to be
-122.0 ms^(-2)
The negative sign indicates the acceleration is in the opposite direction to the initial motion, which means the truck decelerated. This is consistent with the given condition.

3 0

3 years ago

Someone help

AURORKA [14]

Answer:

Explanation:

No 1 is linked to the option provided at no 5.

A direct object is the noun that follows the verb and answers the question.

No 2 is linked to the option provided at no 8.

A verb is a word that expresses action.

No 3 is linked to the option provided at no 5.

The subject is what or whom the sentence is about.

No 5 is linked to the option provided at no 3.

A predicate noun follows a linking verb, and renames the subject.

No 6 is linked to the option provided at no 4.

A predicate adjective follows a linking verb, and describes a subject.

No 7 is linked to the option provided at no 1.

A linking verb joins a subject and a predicate.

No 8 is linked to the option provided at no 2.

A sentence expresses a complete thought....

5 0

2 years ago

Complete the graphic organizer by telling what the advantages and disadvantages of each type of renewable energy are. (Look in p

inysia [295]

Answer:

PRO'S OF SOLAR ENERGY: reduced electricity bills, low maintenance cost, renewable energy source.

CONS OF SOLAR ENERGY: Cost, relies on weather, takes up a lot of space.

PROS OF WIND ENERGY: Clean environment, cost effective, Free

CON'S OF WIND ENERGY: Wind turbines are noisy, strength of wind is not always reliable

PROS OF GEOTHERMAL ENERGY: Save about 30% - 60% on heating and cooling, not weather dependent.

CONS OF GEOTHERMAL ENERGY: Greenhouse emission, high investment cost, requires a lot of land.

PROS OF BIOMASS ENERGY: Reduced dependence on fossil fuels, carbon neutral, waste reduction.

CONS OF BIOMASS ENERGY: Emissions, deforestation. cost.

PROS OF HYDROELECTRIC ENERGY: Good for the environment, reliable, efficient.

CONS OF HYDROELECTRIC ENERGY: Expensive, not always safe, you can't place hydroelectric energy anywhere you want.

***If you found my answer helpful, please give me the brainliest. :) ***

6 0

2 years ago

Balance the equation

mote1985 [20]

Is this a chemistry question ?

7 0

2 years ago