Answer:
B. Cover the body from chest to boots
Explanation:
Respiratory Protective Equipment (RPE) may be required when handling dusts, fogs, smokes or vapours. It may also be needed for spraying using vehicles without an enclosed cab or hand spraying in enclosed spaces or above waist height.
A 30.0 W light bulb in a simple DC circuit is powered by a 9.0 V battery. Assuming there are no other circuit elements, how much current flows through the lightbulb?
Air enters a 28-cm diameter pipe steadily at 200 kPaand 208C with a velocity of 5 m/s. Air is heated as it flows, and leaves the pipe at 180 kPa and 408C. Determine (a) the volume flow rate of air at the inlet, (b) the mass flow rate of air, and(c) the velocity and volume flow rate at the exit.
Answer:
(a) [tex]\dot V_1[/tex] = 0.308 m³/s
(b) [tex]\dot m[/tex] = 0.732 kg/m³
(c) v₂ = 5.94 m/s.
Explanation:
(a) The volume flow rate is given by the cross sectional area of the pipe × Velocity of flow of air
Diameter of pipe = 28 cm = 0.28 m
The cross sectional area, A, of the pipe = 0.28²/4×π = 0.0616 m²
Volume flow rate = 5 × 0.0616 = 0.308 m³/s
[tex]\dot V_1[/tex] = 0.308 m³/s
(b) From the general gas equation, we have;
p₁v₁ = RT₁ which gives;
p₁/ρ₁ = RT₁
ρ₁ = p₁/(RT₁)
Where:
ρ₁ = Density of the air
p₁ = 200 kPa
T₁ = 20 C =
R = 0.287 kPa·m³/(kg·K)
ρ₁ = 200/(0.287 ×293.15) = 2.377 kg/m³
The mass flow rate = Volume flow rate × Density
The mass flow rate, [tex]\dot m[/tex] = 2.377×0.308 = 0.732 kg/m³
[tex]\dot m[/tex] = 0.732 kg/m³
(c) The density at exit, ρ₂, is found from the the universal gas equation as follows;
ρ₂ = p₂/(RT₂)
Where:
p₂ = Pressure at exit = 180 kPa
T₂ = Exit temperature = 40°C = 273.15 + 40 = 313.15 K
∴ ρ₂ = 180/(0.287×313.15) = 2.003 kg/m³
[tex]\dot m[/tex] = ρ₂×[tex]\dot V_2[/tex]
[tex]\dot V_2[/tex] = [tex]\dot m[/tex]/ρ₂ = 0.732/2.003 = 0.366 m³/s
[tex]\dot V_2[/tex] = v₂ × A
v₂ = [tex]\dot V_2[/tex]/A = 0.366/0.0616 = 5.94 m/s.
v₂ = 5.94 m/s.
Always refill your gas tank well before____.
Answer:
indicator light appears
Explanation:
indicator light appears
Answer:
Your fuel gauge reaches one quarter full
Hope this is correctHAVE A GOOD DAY!
answer this question fast
Answer:
When the expenditure increased, then the consumer's expenditure is increased to Rs.150 and when the price falls of the good it becomes Rs.5. Then, Good X will be Rs.10.
last question:If the Good X falls by 20%, then, it will be Rs.2, and according to his demand 100 units will be equal to Rs.200.
cause if one unit=rs.2, then 100units=100×2=200.
Could an able-bodied person receiving all or most of their income from government transfer payments achieve earned success? Why or why not?
Answer:
yes and no because if he transferred he has a major reason for doing so but if he doesn't its his own piece of cake and another reason why he transferred is to protect and keep his money and account and belongs safe
2. Technician A says that checking ambient temperature as part of an AC performance test is unnecessary. Technician B says that if the AC compressor hasn't
been operating, the high-side pressure should be high and the low-side pressure should be low. Who is correct?
O A. Technician A
O B. Neither Technician A nor B
O C. Technician B
O D. Both Technicians A and B
Answer:
The correct option is;
B. Neither Technician A nor B
Explanation:
A performance test is meant to determine the proper functioning of the air conditioning system for fault finding where repair is required
While the engine is powered off it is expected that to have the same pressure or equal pressures in the low-side and high-side pressure and have a pressure expected for a given ambient temperature, such that, as an example, a system with R134a should have a pressure slightly more than 71 psi. at 70°F
Therefore, neither technicians A nor B is correct as the ambient temperature is important for performance testing and high-side and low-side pressures should be equal when the engine is powered off.
Royce has a Bevel protractor with a damaged vernier scale. What limitation will Royce face if he uses this protractor to measure angles?
Answer:
Limitation in the level of possible accuracy of the that can be obtained to mainly whole degrees
Explanation:
The angle measurement values are located around the circularly shaped bevel protractor to which a Vernier scale can be attached to increase the accuracy of the angle measurement reading
The accuracy of the bevel protractor is up to 5 arc minutes or 1/12° with the space on the Vernier scale having graduations of 1/12°, such that two spaces on the main scale is 5 arc minutes more than a space on the Vernier scale and the dimensions of the coincidence of the two scale will have an accuracy of up to 1/12°
Therefore, whereby the Vernier scale is damaged, the accuracy will be limited to the accuracy main scale reading in whole degrees.
In the event of a crash, Personal Injury Protection (PIP) coverage pays toward the medical costs for _____.
A. any injuries you cause to others
B. any injuries that are not your fault
C. your injuries if you are not at fault
D. your injuries, regardless of who's at fault
Answer:
The answer is D. Your injuries, regardless of who's at fault.
The structure of a house is such that it loses heat ata rate of 3800 kJ/h per8C difference between the indoors andoutdoors. A heat pump that requires a power input of 4 kWis used to maintain this house at 248C. Determine the lowestoutdoor temperature for which the heat pump can meet theheating requirements of this house.
Answer:
The lowest outdoor temperature for which the heat pump can meet the requirement of the house is -9.6°C
Explanation:
The coefficient of performance of a heat pump, COP, is given by the relation;
[tex]COP_{hp} = \dfrac{T_2}{T_2 - T_1} = \dfrac{Q_1\times (T_2 - T_1)}{\Sigma W}[/tex]
The rate of heat loss [tex]\dot Q_1[/tex] = 3800 kJ/h = 3800 ×1/60 × 1/60 kJ/s = 1.06 kJ/s
The power input = 4 kW = 4 kJ/s
The temperature indoors = 24 + 273.15 = 297.15 K
Therefore, we have;
[tex]COP_{hp} = \dfrac{297.15}{297.15- T_1} = \dfrac{1.06 \times (297.15- T_1)}{4}[/tex]
4×297.15= (297.15- T₁) × 1.06×(297.15- T₁)
Which gives;
18/19·T₁²-627.32·T₁+92014.97=0
(T₁ -263.59)·(T₁ - 330.71) = 0
The solutions are;
T₁ = 263.59 K or T₁ = 330.71 K
The lowest temperature = 263.59 K which is -9.6°C
The lowest temperature = -9.6°C.
Please what is the name of this tool
Answer: it’s called a saw or see saw
Explanation: it works by cutting a tree, wood, tile, etc.
Mike has a factory that manufactures highly customized products. Which type of manufacturing system is most suitable for it?
Answer:
Custom Manufacturing System.
Explanation:
As per the custom manufacturing system, each object is made by a unit of a producer like a craftsman or a group who works entirely on the concerned product. This manufacturing system is characterized by the use of machines and they appear to be highly skilled in their tasks and can not generate more than one object at a time. This also appears to be correlated with both the highest quality goods and the lowest volume efficiency.
Answer:
A. Conventional job shop
which of the following is not one of the common types of traction loss?
A. ROLL
B. YAW
C. PITCH
D. FORWARD
Answer: Forward So it's D
Answer:
It's forward :)
Explanation:
The speed limit is posted in most areas, but, if not, the ___________ speed limit will be in effect. A. implied B. default C. conditional D. none of the above
Answer:
The answer is B (default).
The gear lube level is being checked in a manual transmission. Technician A says it should run out when the plug is removed. Technician B says that some transmissions use motor oil as gear lube. Who is correct?
Answer:
Both technician A and B are correct
Explanation:
The function of the gear lube drain plug is to drain the automatic transmission fluid from the gear box
Although motor oil is for the engine, motor vehicle transmission uses different oil types as the transmission system or automatic transmission system (ATF) operates in an closed system environment it is free from fuel contamination that motor oil absorbs
As such depending on the specification, manual transmission oil can range from hypoid oil, motor oil or automatic transmission oil.
Am I the only one who cannot see the answers?? Does anybody know how to solve this?
Answer:
no, it seems that everyone is having the same issue. If you use the app you can still find the answers and see them.
Explanation:
BHE:FLI:JPM next sequence
Answer:
NTQ
Explanation:
The given sequence is
BHE : FLI : JPM
If is clear that, alphabets on first places are B, F, J. Difference between their place vales is 4.
B+4=F,F+4=J ; so alphabet on first place of next term of sequence is J+4=N.
Similarly, alphabets on second places are H, L, P. Difference between their place vales is 4.
H+4=L,L+4=P ; so alphabet on second place of next term of sequence is P+4=T.
Alphabets on third places are E, I, M. Difference between their place vales is 4.
E+4=I,I+4=M ; so alphabet on third place of next term of sequence is M+4=Q.
Therefore, the next term is NTQ.