Answer:
1. The input power is 17.6 Watts
2. The output power is 0.7232 Watts
3.The efficiency of the hand crank generator is approximately 4.109%
Explanation:
The given parameters are;
The force with which the crank generator is turned = 22 Newtons
The rate at which the crank is turned = 8 revolutions per 3 seconds
The distance the hand moves during each revolution = 0.3 meters
The current recorded by the multimeter = 0.08 amps
The voltage recorded by the multimeter = 9.04 volts
1. Power = The rate of doing work = Work done/(Time taken to do the work) = Force × Distance/Time
∴ The power input of the hand crank generator = 22 × 0.3 × 8/3 = 17.6 Watts
2. The power output to the bulb, P, is given by the formula for electrical power as follows;
Power = Current, I × Voltage V
∴ P = 0.08 × 9.04 = 0.7232 Watts
3. Efficiency in percentage = Output/Input × 100
Therefore, the efficiency of the hand crank generator = )Output power/(Input power)) × 100 = (0.7232/17.6) × 100 ≈ 4.109%
i have two numbers that sum to 16 and have a difference of 3. by forming two equations and solving them, find the two numbers
Answer:
(x=9.5 and y=6.5) or ( x=6.5 and y = 9.5)
Explanation:
Let equations be
x+y = 16
If
x-y = 3
Now, Adding both equations, we get
x+y+x-y = 16+3
2x = 19
x=19/2 = 9.5
y = 16-9.5 = 6.5
Now y-x = 3
Now, Adding both equations, we get
x+y+y-x = 16+3
2y = 19
y=19/2 = 9.5
x = 16-9.5 = 6.5
4. Long term marijuana use can cause
How much thermal energy is needed to raise the temperature of 15kg gold from 45⁰ C up to 80⁰ C
Answer:
68.25 kJ
Explanation:
The thermal energy Q required to raise the temperature of 15kg gold from 45⁰ C up to 80⁰ C is Q = mcΔθ where m = mass of gold = 15 kg, c = specific heat capacity of gold = 130 J/kg°C and Δθ = temperature change = θ₂ - θ₁ where θ₁ = 45 °C and θ₂ = 80 °C
So, Q = mcΔθ = mc(θ₂ - θ₁)
= 15 kg × 130 J/kg°C × (80 °C - 45 °C)
= 1950 J/°C × 35 °C
= 68,250 J
= 68.25 kJ
THE LINE IS USED TO SHOW IMPORTANT OVERHEAD CONSTRUCTION.
A. PHANTOM
B. HIDDEN
C. EXTENSION
D. CENTER
Answer:
phantom
Explanation:
phantom is the option
When you adjust the controller's output to achieve the setpoint, what sort of system do you have?
Answer:
Modulating control
Explanation:
pf
hope this helps!
how to go to music on shcool computer
Answer: I think you leasen because if you have the internet of school or you have your hootspot
Explanation:
Answer:
You need wifi unless the school lets you use the wifi from there
Explanation:
please help me plz ill give 100 points and do something nice i need this done today plzz
Conditioned describes a space that's heated and cooled with the rest of the house. An unconditioned space is not heated or cooled so it's the same temperature (roughly) as outdoor air.
Daniel Wiseman, a scientist for Gres-Trans Corp., wants to determine if the flow rate of a particular material changes with different changes in temperature. The data is plotted in the figure below. What type of relationship exists between the flow rate and the change in temperature? negative curved positive there is no relationship
Answer: C. There is no relationship
Explanation:
At the various temperatures, the flow rates do not seem to show any relation as similar temperatures can yield different flow rates.
The flow rates neither appear to generally increase nor decrease as a result of a decrease or an increase in temperature which means that there is a lack of a positive, negative and curvilinear relationship.
There is simply no relationship.
Imagine waking up every day and no one is home besides your dog and you how would you feel?
Answer:
I would be upset.... are you ok???
2. A
is a launched object that moves forward due to inertia and
accelerates downward due to gravity.
A. joule
B. nodule
C. phalange
D. projectile
is the curved path a launched object takes as it moves
disconnecting a circuit while in operation can create a voltage blank
Answer:
what is the question
Explanation:
confused
The term route of entry on sds refers to the way a Enters the body
Answer:Routes of Entry – The means by which a material may gain access to the body, for example, inhalation, ingestion, and skin contact. Safety Data Sheet (SDS) – The written or printed material concerning a hazardous chemical that is prepared in accordance with the HCS.
Explanation:
The American Society of Mechanical Engineers (ASME) updates their entire code every _____.
A.
a year
B.
2years
C.
3years
D.
5years
Answer:
I think the answer is C. hope this helps
Explanation:
1 point
The image here shows a human arm. This is a good example of:
Biceps
Triceps
Tendon
a 1st class lever
a 2nd class lever
a 3rd class lever
a 4th class lever
If the IMA of a wedge is calculated to be 4.0 and the AMA of the same wedge is calculated to be 3.0, then what is the % efficiency of the wedge?
what is meant by engineering jobs
Answer:
Engineers work in a variety of fields to analyze, develop and evaluate large-scale, complex systems. This can mean and improve and maintaining current systems or creating brand new projects. Engineers will design and draft blueprints, visit systems in the field and manage projects.
essay about the topic that says shop should be closed on Sundays
Answer:
Do you mean writing about shops that close on Sunday's and making the opinion whether they should or not?
Explanation:
Column A
1.
2.
3.
4.
5.
-
-
Ohm's Law
Resistance
Current
Voltage
Ground
Question 9 (4 points)
Column B
a. The force or electrical pressure that has the potential to
cause electron flow in a circuit.
b. The physical phenomena arising from the behavior of
electrons and protons that is caused by the attraction of
particles with opposite charges and the repulsion of
particles with the same charge. The physical science of
such phenomena. Also, electric current used or regarded
as a source of power.
c. The opposition to current flow in a circuit; measured in
ohms.
d. Very basic circuit law that defines the relationships
between current, voltage, and resistance in a DC circuit.
e. The common return path for current in an electrical
circuit. Serves as a reference point for measuring all other
potentials in a circuit. Generally assumed to be at zero
potential with respect to the earth.
Answer / Explanation:
I am assuming the first column looks like
1. Ohm's Law
2. Resistance
3. Current
4. Voltage
5. Ground
This is typical circuit vocabulary,
1. d
2. c
3. b
4. a
5. e
1.
affects the straight-line motion of a flying object by pulling it
down toward the ground.
A Buoyancy
B. Density
C. Gravity
D. Pressure
4 ft – 6 ½ in. to inches. Record your answer in fractional inches.
Given that
4 ft – 6 ½ in.
To find,
We need to convert it it inches.
Solution,
We know that,
1 foot = 12 inches
4 feet = 4×12 inches
= 48 inches
[tex]4\ ft-6\dfrac{1}{2}\ in=48\ in+6\dfrac{1}{2}\ in\\\\=48+\dfrac{13}{2}\\\\=54.5\ \text{inches}\\\\=\dfrac{109}{2}\ \text{inches}[/tex]
Hence, 4 ft – 6 ½ in = 54.5 inches = 109/2 inches
Which task does a landscape architect perform?
select the correct answer
A. planning gardens
B. arranging
C. overseeing the construction site
D. inspecting construction
Answer:
B
Explanation:
Answer:
the answer is b
Explanation:
PLEASE HELP! I AM TAKING A TEST
On a bicycle Chain and Sprocket: Which of the following gear ratios will give you the most Torque at
the back tire?
Driver 6"; Driven 6"
O Driver 6"; Driven 4"
O Driver 6"; Driven 2.5"
O Driver 2.5"; Driven 6"
Answer:
2.5
Explanation:
Before starting you presentation, you should____?
Explanation:
Rehearse, rehearse, rehearse (always aloud) ...
Memorise your opening line. ...
Practise your speech from written notes. ...
Practise presentation flow. ...
The power of silence. ...
Have a backup. ...
Arrive early. ...
Use physical props for a demo.
Answer: introduce yourself or read the tilted
Explanation: you should introduce yourself first because tht let people know how going to be introducing the project or etc. I also say tilted because people need to know what you are going to be introducing to the class or teacher.
How do you invite people to a covorsation
Answer:
just the way u did rn
Explanation:
lol
Shondra’s family’s monthly net income is $6,654. The family’s budget is shown in the circle graph below. The family decides to increase the savings budget by 3 percent by decreasing one of the variable expenses by 3 percent.
Answer:
$466
Explanation:
.Match the benefit of full synthetic oil with engine conditions: If oil is thicker, engines lose power and efficiency.
A) Synthetic improves engine protection by resisting oil breakdown.
B) Synthetic has greater resistance to oil thickening to maintain engine efficiency.
C) Synthetic provides maximum protection in extreme hot and cold temperature conditions
Synthetic has greater resistance to oil thickening to maintain engine efficiency. The correct option is B.
What is engine efficiency?An engine's efficiency is defined as the ratio of useful work done to heat provided is the completed work Please keep in mind that the term "work done" refers to the power delivered at the clutch or driveshaft.
This means that the work done by thermodynamic expansion is reduced by friction and other losses.
Lower viscosity without sacrificing wear protection and better cold-flow, both of which improve fuel economy, are possible with synthetic oil.
Thus, the correct option is B.
For more details regarding engine efficiency, visit:
https://brainly.com/question/13154811
#SPJ1
When a car engine is running, make sure that ______________. *
Answer:
Transmission fluid level
Explanation:
Answer:
make sure its in park unless youre in the vehicle
Explanation:
AAAAAAA CAR IS RUN WAY AAA CATCH CAR
Construction engineers develop a clear
scope of the environment for the
construction project using which of the
following?
A. GPS
B. Blueprints
C. Drafting
Answer:
B. Blueprints
Explanation:
Why are communication (verbal, written and drawing) skills so important to have as an engineer?
Answer:
Both written and verbal communication skills are of the utmost importance in business, especially in engineering. Communication skills boost you or your teams' performance because they provide clear information and expectations to help manage and deliver excellent work.
Information such as tolerances and scale can be found in the _______________ of an engineering drawing.
Answer:
Information such as tolerance and scale can be found in the title block of an engineering drawing
Explanation:
The title block of an engineering drawing can normally be found on the lower right and corner of an engineering drawing and it carries the information that are used to specify details that are specific the drawing including, the name of the project, the name of the designer, the name of the client, the sheet number, the drawing tolerance, the scale, the issue date, and other relevant information, required to link the drawing with the actual structure or item