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xxMikexx [17]
3 years ago
6

what is the change in energy (in J) for a system that lost J of heat to the surrounding, and did 150J of work

Physics
1 answer:
RoseWind [281]3 years ago
5 0

Answer:

Change in energy Δu = 40 J

Explanation:

Given:

System heat ΔQ = 150 J

Missing value of Lost heat ΔW = 110 J

Find:

Change in energy Δu

Computation:

Change in energy Δu = System heat ΔQ - Missing value of Lost heat ΔW

Change in energy Δu = 150 - 110

Change in energy Δu = 40 J

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3. Nearsighted people can undergo a medical procedure called keratotomy to produce normal (or at least more-normal) vision. In t
Mademuasel [1]

Answer:

P= -1.83D

Explanation:

Given,

u=-6 m

v=-50 cm = - 0.5 m

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P = 1/f = 1/v = 1/u

P = 1/ -0.50 + 1/6

P = -1.83D

7 0
3 years ago
Select all that apply. The three types of rock in the Earth's crust are _____.
ale4655 [162]
1, 5 and 6 are the rocks your looking for, they make up the other ones on your list

7 0
3 years ago
The coefficent of static friction between the floor of a truck and a box resting on it is 0.38. The truck is traveling at 87.9 k
nekit [7.7K]

Answer:

d=79.9m

Explanation:

From the question we are told that:

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Velocity v=87.9=>24.41667m/s

Generally the equation for Conservation of energy is mathematically given by

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 d=\frac{0.5*24.42^2}{0.38*9.8}

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3 0
3 years ago
Which statement illustrates how progress in engineering has affected the natural environment?
kvasek [131]

Answer:

A. Extracting mineral resources with modern mining equipment removes fertile topsoil.

Explanation:

Mining is defined as the process that involves the extraction of valuable minerals from large amounts of waste rock.

Progress in engineering has affected the natural environment and mining is one of the best examples of this. The use of modern mining equipment removes fertile topsoil and highly influences the fertility of the soil.  It is hard to reconstruct topsoil and modern mining equipment continuously damaging soil fertility.

Hence, the correct answer is "A. Extracting mineral resources with modern mining equipment removes fertile topsoil."

5 0
3 years ago
Read 2 more answers
Help please! Test tomorrow!
dlinn [17]

Earth distance to the Sun is about 40 times the Moon's distance from earth.

<u>Explanation:</u>

  • The Earth's distance from the Sun is about 93 million miles. When it expressed in Km, it is 150 million Km.
  • The Moon's distance from Earth is 238,855 miles. When it is 40 times then it will approximately equal to 93 million miles.
  • The Sun's distance from Venus is 67.237 million miles. The Sun's distance from mercury is 35.832 million miles.
7 0
4 years ago
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