When designing a new product, which type of drawing is usually made FIRST?

What regulations is OSHA cover under what act

andriy [413]

The law requires employers to provide their employees with working conditions that are free of known dangers. The OSH Act created the Occupational Safety and Health Administration (OSHA), which sets and enforces protective workplace safety and health standards.

6 0

4 years ago

Precast double-tee units are generally used as structural floors when:________.

TiliK225 [7]

Answer:

d. floor spans exceed that which is economical with site-cast or hollow-core slabs and exceed 60 feet.

Explanation:

Double tee slabs are prestressed concrete castings usually about 100 m to 150 m long. They are usually used in the construction industry in structures requiring a long floor span (or roof span) exceeding 60 feet in length, that is required to bear additional load (additional load carrying capability). Double tee slabs are usually employed in construction because they shorten construction time. reduce congestion at the construction site, and also reduce construction cost.

They are the required choice in construction when the cost of site casting or hollow-core slabs is no longer economical due to the length of the structure exceeding 60 feet.

8 0

3 years ago

A power cycle operating at steady state receives energy by heat transfer at a rate Q˙ H at TH = 1500 K and rejects energy by hea

Sphinxa [80]

(a) The cycle is not possible.

(b) The cycle operates irreversibly.

(c) The cycle operates irreversibly.

(d) The cycle is not possible.

Explanation:

Given -

Temperature of hot reservoir, Th = 1500K

Temperature of cold reservoir, Tc = 500K

(a)

Heat transfer at hot reservoir, Qh = 550 kW

Heat transfer at cold reservoir, Qc = 100 kW

Maximum net work -

Wcycle = Qh - Qc

Wcycle = 550 - 100 = 450kW

Maximum efficiency -

ηmax = 1 - Tc/Th

ηmax = 1 - 500/1500 = 0.667

ηmax = 66.7%

η(actual) = Wcycle/ Qh

η(actual) = 450 kW/ 550 = 0.8

η(actual) = 80%

Since the actual efficiency is higher than the maximum efficiency, the cycle is not possible.

(b)

Heat transfer at hot reservoir, Qh = 500 kW

Heat transfer at cold reservoir, Qc = 200 kW

Maximum net work -

Wcycle = Qh - Qc

Wcycle = 500 - 200 = 300kW

Maximum efficiency -

ηmax = 1 - Tc/Th

ηmax = 1 - 500/1500 = 0.667

ηmax = 66.7%

η(actual) = Wcycle/ Qh

η(actual) = 300 kW/ 500 = 0.6

η(actual) = 60%

Since the actual efficiency is lower than the maximum efficiency, the cycle operates irreversibly.

(c)

Heat transfer at hot reservoir, Qh = 300 kW

Heat transfer at cold reservoir, Qc = 150 kW

Maximum net work -

Wcycle = Qh - Qc

Wcycle = 300 - 150 = 150 kW

Maximum efficiency -

ηmax = 1 - Tc/Th

ηmax = 1 - 500/1500 = 0.667

ηmax = 66.7%

η(actual) = Wcycle/ Qh

η(actual) = 150 kW/ 300 = 0.5

η(actual) = 50%

Since the actual efficiency is lower than the maximum efficiency, the cycle operates irreversibly.

(d)

Heat transfer at hot reservoir, Qh = 500 kW

Heat transfer at cold reservoir, Qc = 100 kW

Maximum net work -

Wcycle = Qh - Qc

Wcycle = 500 - 100 = 400kW

Maximum efficiency -

ηmax = 1 - Tc/Th

ηmax = 1 - 500/1500 = 0.667

ηmax = 66.7%

η(actual) = Wcycle/ Qh

η(actual) = 400 kW/ 500 = 0.8

η(actual) = 80%

Since the actual efficiency is higher than the maximum efficiency, the cycle is not possible.

4 0

3 years ago

An architect position requires an internship or residency true or false

Helga [31]

False

Explanation:

Residency is a term in medicine that means a three plus training program in medical specialty. An architect is a program in the engineering field that requires an internship after graduation to equip a graduate architect with field experience that involve working close with experienced professionals in the same field. During this 12 month internship period, a graduate is trained on how to perform the real job through exposure to projects in that field.

Learn More

Residency in medicine :brainly.com/question/13357986

Keywords : architect, internship, residency

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4 0

3 years ago

Which property determines the ability of a material to absorb, transmit, and reflect sound?

tankabanditka [31]

Explanation:

Acoustic.

In general, soft, pliable, or porous materials (like cloths) serve as good acoustic insulators - absorbing most sound, whereas dense, hard, impenetrable materials (such as metals) reflect most.

4 0

3 years ago