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lord [1]
3 years ago
9

How much heat energy is produced by 0.5 Wh of electrical energy ?

Physics
2 answers:
Fittoniya [83]3 years ago
8 0
The answer is B 

                           Hope it helps 

                                                  <3

babymother [125]3 years ago
6 0
1.7 Btu

1 watt = 3.41214 Btu/h

1watt * 1h = 3.41214 Btu/h * h

1 = 3.41214 Btu/ (watt*h)/

0.5 watt * h = 0.5 watt*h * 3.41214 Btu/(watt*h) = 1.706 Btu
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A simple pendulum of length 1.5m has a bob of mass 2.0kg. State the formula for the period of small oscillations and evaluate it
Shalnov [3]

A simple pendulum of length 1.5m has a bob of mass of 2.0kg, then the period for the small oscillations would be 2.456 s.

<h3>What is the frequency?</h3>

It can be defined as the number of cycles completed per second. It is represented in hertz and inversely proportional to the wavelength.

The frequency of a pendulum is the reciprocal of the time period can be given by the following relation,

f = 1/T

As given in the problem A simple pendulum of length 1.5m has a bob of mass of 2.0kg.

The formula for the time period for the pendulum,

T = 2π√L/g

  =2π√1.5/9.81

  =2.456 s

Thus, the period for the small oscillations would be 2.456 s.

Learn more about frequency from here,

brainly.com/question/14316711

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4 0
1 year ago
What are the four main reasons as to why, despite having an abundance of minerals and natural resources, Pakistan has been unabl
Andre45 [30]

Answer:

GDP growth rate is low

Political instability

Lack of technical skills due to low literacy rate

Pressure from neighboring countries

Explanation:

Gross Domestic Product growth rate of Pakistan is much lower than many developed countries. The GDP growth rate for Pakistan is nearly 5% which is not even stable and it variate from plans. Due to which Pakistan is unable to use its available resources to the fullest. Also one of major issue is political instability in the country. After the loss of great leader Quaid e Azam Pakistan has not faced any loyal leader till date.

Noise pollution, health issues, lack of provision of basic necessities to many are few other factors which give rise to poor law and order situation in the country. Lack of availability of heavy machinery and poor infrastructure has contributed to the country decline. There is abundance of natural resources in the country but due to these issues the country is unable to deal with the challenges.

The pressures from neighboring countries have made the situation even worst. The heavy loan burden is restricting the country from development. The covenants imposed by the lenders have limited the country's ability to use its natural resources and become stable.

5 0
3 years ago
Two mirrors are at right angles to one another. A light ray is incident on the first at an angle of 30° with respect to the norm
marta [7]

Answer:

reflected angle - secod mirror = 60°

Explanation:

I attached an image with the solution to this problem below.

In the solution the reflection law, incident angle = reflected angle, is used. Furthermore some trigonometric relation is used.

You can notice in the image that the angle of reflection in the second mirror is 60°

7 0
3 years ago
7. A stereo is able to convert 20% of its electrical energy into sound. If 1000 J of sound energy is produced, calculate the ele
Sonja [21]

Answer:

As 20/100 E= 1000

E= 10,000/2

=5000J

3 0
3 years ago
What happens when two aqueous solutions are combined in a precipitation reaction and no precipitate is formed?   A. The solution
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There's no reaction for me.

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