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Naya [18.7K]
3 years ago
10

The length and width of a rectangle are 1.82 cm and 1.5 cm respectively. Calculate area of the rectangle and write in correct si

gnificant number.
Physics
1 answer:
Nezavi [6.7K]3 years ago
8 0

Answer:

Hey mate ,

Area of rectangle = l×b

1.82×1.5

2.73cm2

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One horsepower is a unit of power equal to 746 W. How much energy can a 150-horsepower engine transform in 10.0 s?
Lelu [443]

Answer:

E = 1119000\ joules

Explanation:

Given:

1\ Hp = 746\ watt

time (t = 10.0 sec)

power = 150 Hp

We need to find the energy transformed by a 150 Hp engine in 10 s.

Solution:

First we convert 150 Hp in watt.

1\ Hp = 746\ watt

150\ Hp = 150\times 746\ watt

150\ Hp = 111900\ watt

So, power (p = 111900 watt)

We know that, if we multiply power by time, we get energy transform by engine.

P = \frac{E}{t}

E = P\times t\ joule  -----------(1)

Where:

P ⇒ power.

E ⇒ Energy.

t ⇒ time.

Substitute p = 111900 watt and t = 10 s in equation 1.

E = 111900\times 10

E = 1119000\ joules

Therefore, a 150 Hp engine could transform 1,119,000 joules energy  in 10 s.

4 0
3 years ago
How does the suns energy affect the climate of an area
SSSSS [86.1K]

There wouldn't be any life on Earth and no climate if it weren't for the Sun.

The spherical form of the Earth results in changes in the amount of sunlight that reaches the surface at various latitudes, giving rise to various climatic zones. Seasons are caused by the tilt of the Earth's axis of rotation in relation to the ecliptic plane.

The surface of the sun is around 6000 C hot; at this temperature, the solar mostly produces visible light. The Earth radiates infrared energy back into space to maintain its energy balance after being warmed by incoming solar radiation. The Earth's surface has an average temperature of 15 C, and at this temperature, the planet emits infrared light.

Carbon dioxide, methane, nitrous oxide, and other atmospheric greenhouse gases let solar energy to pass through but absorb infrared radiation that the planet emits back into space. This feature is not shared by other atmospheric elements like oxygen and nitrogen. These greenhouse gases re-emit infrared radiation in all directions to maintain energy balance, some of which is aimed at the Earth's surface and warms it. More greenhouse gases will increase infrared absorption and raise surface temperatures. This is comparable to how much blanket you cover yourself with at night. The blanket's thickness affects how warm you feel. The result of heat brought on by rising levels of greenhouse gases in the atmosphere is climate change.

In the course of billions of years, the Sun will continue to get hotter and brighter, rendering the Earth uninhabitable.

Additionally, all fossil fuels (coal, petroleum, and natural gas) and renewable energy are directly and indirectly derived from the sun (wind, solar, biomass, and hydroelectric).

Thank you,

Eddie

7 0
2 years ago
Read 2 more answers
A 3.0kg weight W is initially at rest on incline AB, which is raised 40° above the horizontal. The effective coefficient is
lakkis [162]

(a) The acceleration of the system is determined as 1.58 m/s².

(b) The relative weight of P is pounds is determined as 0.14 lb.

<h3>Acceleration of the system</h3>

The acceleration of the system is calculated as follows;

W - T = m₂a --- (1)

T = m₁a ----(2)

μmgsinθ - m₁a = m₂a

(0.3 x 3 x 9.8 x sin40) - (0.4 + 0.2)a = 3a

5.67 - 0.6a = 3a

5.67 = 3.6a

a = 5.67/3.6

a = 1.58 m/s²

<h3> Relative Weight of P</h3>

W = ma

W = 0.4 x 1.58

W = 0.632 N = 0.14 lb

Learn more about weight here: brainly.com/question/2337612

#SPJ1

3 0
2 years ago
If a refrigerator is a heat pump that follows the first law of thermodynamics ,how much heat was removed from food inside of the
Alika [10]
If it follows the 1st law of thermodynamics it would also remove heat of 314J from the food inside the refrigerator.
4 0
4 years ago
Why can't scientists predict exactly what will happen in the future of the universe?​
Vsevolod [243]

Answer:

They can't predict it because the universe belongs to the creator and it's only the creator that can predict it

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3 years ago
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