Answer:
Explanation:
Do you mean food service? It's kind of iffy as an answer. It might be handy to understand the chemistry of foods and the technology of refrigeration. That makes food services hard to classify.
Education: no. You can avoid the math and data skills. You don't need them in education. I knew many teachers that had no idea what a computer did.
technology: definitely. There aren't many technologies that make data processing and mathematics unnecessary.
engineering: definitely.
Answer
Engineering
Technology
maybe food services.
The first two for sure.
What is the minimum recommended safe distance from an X-ray source?
In a hydroelectric power plant, 65 m3/s of water flows from an elevation of 90 m to a turbine, where electric poweris generated. The overall efficiency of the turbine–generator is84 percent. Disregarding frictional losses in piping, estimate the electric power output of this plant.
Answer:
Electric power output of this plant is [tex]48.192\times 10^{6}\,W[/tex].
Explanation:
From First Law of Thermodynamics we understand that hydroelectric power plant transforms mechanical energy from fluid into electric energy. The power output of this plant ([tex]\dot W[/tex]), measured in watts, is determined by this expression, which is derived from definition of mechanical energy and energy efficiency:
[tex]\dot W = \eta \cdot \rho\cdot g\cdot H \cdot \dot V[/tex] (1)
Where:
[tex]\eta[/tex] - Energy efficiency, no unit.
[tex]\rho[/tex] - Density, measured in kilograms per cubic meter.
[tex]g[/tex] - Gravitational acceleration, measured in meters per square second.
[tex]H[/tex] - Fluid column, measured in meters.
[tex]\dot V[/tex] - Volume flow, measured in cubic meters per second.
If we know that [tex]\eta = 0.84[/tex], [tex]\rho = 1000\,\frac{kg}{m^{3}}[/tex], [tex]g = 9.807\,\frac{m}{s^{2}}[/tex], [tex]H = 90\,m[/tex] and [tex]\dot V = 65\,\frac{m^{3}}{s}[/tex], then the estimated electric power output of this plant is:
[tex]\dot W = (0.84)\cdot \left(1000\,\frac{kg}{m^{2}} \right)\cdot \left(9.807\,\frac{m}{s^{2}} \right)\cdot \left(90\,m\right)\cdot \left(65\,\frac{m^{3}}{s} \right)[/tex]
[tex]\dot W = 48.192\times 10^{6}\,W[/tex]
Electric power output of this plant is [tex]48.192\times 10^{6}\,W[/tex].
In a vehicle with front disc brakes, the vehicle pulls to the left when braking. What causes this?
A. Seized left brake caliper piston
B. Collapsed left brake line hose
what is in gorilla glue
Answer:
glue
Explanation:
Water is pumped from a lake to a large storage tank that is 15 m above at a rate of 70 L/s while consuming 15.4 kW of electric power. Disregarding any frictional losses in the pipes.
a. Starting from the conservation of energyequation in the units of Watts, simplify the equation for the case where you want to determinethe mechanical energy added to the water by the pump. Explain why you can eliminate each termyou would not need. The final form of the equation should be in terms of parameters given in a typical problem.
b. Calculate the overall efficiency of the pump-motor unit.
Answer:
Water is pumped from a lake to a storage tank of 15 m above at a rate of 70 L/s while consuming 15.4 kW of electric power. Disregarding any frictional losses in the pipes and any changes in kinetic energy, determine (a) the overall efficiency of the pump-motor unit and (b) the pressure difference between the inlet and the exit of the pump.Explanation:
The doorbell of a home requires 10 volts to operate. A transformer is used to connect a 120 v primary circuit within the home to the doorbell. The transformer in the doorbell has 500 turns on the primary coil and supplies the doorbell with 900 mA of current.
Required:
a. Determine whether the transformer features a step-up or step-down design.
b. Calculate the number of turns on the secondary coil.
c. Calculate the current that is drawn from the 120-V household circuit to operate the doorbell in mA.
Answer:
See explanation
Explanation:
a) The transformer must be a step down transformer because the secondary voltage which it supplies is less than the primary voltage.
b) From;
Ns/Np = Es/Ep
Where;
Ns= number of turns in secondary coil
Np= number of turns in primary coil
Es= voltage in secondary coil
Ep= voltage in primary coil
NsEp = EsNp
Ns = EsNp/Ep
Ns = 10 * 500/120
Ns = 42 turns
c) From;
Es/Ep = Ip/Is
EsIs = EpIp
Ip = EsIs/Ep
Ip = 10 * 900 * 10^-3/120
Ip = 75 mA
B/ Evaluate e^(πi/2)
You get a result immediately from Euler's formula:
e ^(i π/2) = cos(π/2) + i sin(π/2) = 0 + i * 1 = i
Select three of the prerequisites for becoming a civil engineer.
bachelor’s degree in civil engineering
physics courses
communications courses
professional certification
internship with a Professional Engineer
Thanks!
Answer:
A bachelor's degree
Physics course
professional certification
Answer:
A bachelor's degree
Physics course
professional certification
Explanation:
____________ are calibrated to deliver one fixed volume and are ____________ than ______________. Select one: a. Transfer pipets; less accurate; measuring pipets b. Transfer pipets; more accurate; measuring pipets c. Measuring pipets; more accurate; transfer pipets d. None of these answers is correct. e. Measuring pipets; more precise; transfer pipets
Answer:
b. Transfer pipets; more accurate; measuring pipets.
Explanation:
Transfer pipets can be defined as an ungraduated or graduated disposable plastic instrument which are typically used in science laboratories to transfer or deliver liquids that are small in volume (microliters) . Also, they are generally being referred to as chemical
droppers, teat pipets, eye droppers, pasteur pipets, or droppers. It is made up of an ultra-clear long, slender tube with low density polyethylene (LDPE) and an integral molded bulb. The molded bulb allows a fixed volume of the desired liquid to be dispensed (transfered) or aspirated through compression and relaxation.
Hence, transfer pipets are calibrated to deliver one fixed volume and are more accurate than measuring pipets because of its long, slender tube which limits errors.
Transfer pipets are measurement pipets since they are calibrated to provide a specific volume.
Transfer pipets and Measuring pipets
Transfer pipets have been ungraduated as well as graded disposable plastic instruments that were already commonly used during research labs to transmit as well as distribute small-volume liquids.
Combining compression as well as relaxation, the molded bulb permits a set volume of such necessary fluid material to be administered as well as inhaled.
Thus the response above is correct.
Find out more information about transfer pipets here:
https://brainly.com/question/10951729
Life cycle assessments are used by various industries to identify and evaluate the total energy impacts of their products and services.
True or False?
Answer:
True.
Explanation:
A product life cycle can be defined as the stages or phases that a particular product passes through, from the period it was introduced into the market to the period when it is eventually removed from the market.
Generally, there are four (4) stages in the product-life cycle;
1. Introduction.
2. Growth.
3. Maturity.
4. Decline.
Life cycle assessment (LCA) also known as life cycle analysis can be defined as an environmental management technique which is typically used by industries to assess, monitor and analyze the impact of the various stages of the life-cycle of their products, systems, processes or activities and services on the environment i.e the cradle to grave impacts.
Generally, life cycle assessments requires a thorough evaluation of the raw materials and energy that are being used in the manufacturing process of a product or service, as well as determining the various emissions into the environment respectively.
For example, in the manufacturing process of a product, life cycle assessment evaluates the impact of the product from raw material extraction (cradle) to production (finished product), distribution, use, and the disposal of the product (grave).
Hence, life cycle assessments are used by various industries to identify and evaluate the total energy impacts of their products and services.
Which of the following is an example of a social need?
Answer:
A
Explanation: