Jessica Alba

1995 mustang gt wont hold idle?

Hi, this question is for knowledgeable mustang mechanics. My friend has a 95 5.0 motor installed into a 1996 v6 body mustang. The car will not hold an idle. I did a diagnostic and it got a code 111 system pass so that is good. Next i checked the IAC with a multimeter and it is within range 0.01. It seemed a little dirty so we cleaned it out with carb cleaner and it still no change. Spark plugs are new, cap, rotor, and wires are also. Tried to check the timing but the car would not idle long enough to properly time but i did notice that the timing marks were not visible when trying to do this. ? they are there just seemed like they were on the bottom of the crank pulley when trying to do this. Does not make any sense what so ever. I was maybe thinking the distributor might be on wrong. The next thing we were going to try was to pull out spark 1 and bring it to top dead center and readjust the distributor and rotate it until the rotor is pointing toward number 1 spark plug. When out for a drive the car rides fine and has plenty of power and torque but dies when you come to a full stop. Let me know what you think.

PHYSICS HELP!!! PLEASE?

Two resistors A and B are connected in series
to an ideal 12 V battery. A voltmeter connected across resistor A measures a potential
difference of 3 V. When the two resistors are
connected in parallel across the 12 V battery,
the current in B is found to be 2 A.
Find the resistance of B.
Answer in units of Ω
1 minute ago – 4 days left to answer.
Additional Details
find the resistance of A.

A 6 Ω resistor, a 10 Ω resistor, and a 12 Ω
resistor are connected in parallel across a 6 V
battery.
Determine the equivalent resistance for the
circuit.
Answer in units of Ω
b) Determine the current in the circuit.
Answer in units of A

An 11 Ω resistor and a 12.0 Ω resistor are
connected in parallel to a battery, and the
current in the 11 Ω resistor is found to be
0.510 A.
Find the potential difference across the battery.
Answer in units of V

A galvanometer has an internal resistance of 100 ohms and deflects full-scale for a current of 100 µA.?

This galvanometer is to be converted to a multirange ammeter using the circuit shown in Figure P19.28. Find the values of R1, R2, and R3 that will give the full-scale readings in the figure.

http://www.webassign.net/sf5/p19_28.gif

Renault Espace diesel with very low power?

I have a renault espace 2.2 diesel T reg (99) the first problem is that its really sluggish i was driving down the road one day and suddenly it had lost power and now it dosent seem to pick up any power at all you can put your foot down and nothing at all iv been told it could be one of several things, MAF, MAP sensor, ECU any expert opinions on what to check? and what readings should i expect on a multimeter from sensors if i can use one?
the second problem is that the coolant light is on as if its empty but the thing is full…
not sure if the problems could be related in any way?
any help would be great, thanks

random error, systematic error, correction, or mistake??? 10 points for best answer.?

a. Your ability to interpolate to 1/5 of a smallest scale division.
b. Characterizes the accuracy of a measurement.
c. A bent voltmeter needle does not read 0 when 0 volts are applied.
d. The voltmeter reads +0.03 V when 0 volts are applied.
e. Can be found by taking repeated measurements with the same procedure and equipment.
f. The calibration uncertainty of a meter.
g. You use grams in a calculation instead of kilograms.
h. The width of a reference edge in a position measurement.
i You buy tires which are known to be 5% too small so that your speedometer reads 5% too high.
j. A meter needle is a few mm above the scale markings. Your line of sight is not perpendicular to the volmeter dial face.

This is MY ANSWERS…but not sure if they are right??
a. Random error
b. systemic error
c. SE
d. SE
e. RE
f. RE
g. mistake
h.?? not sure at all
i. correction
j. SE

please explain if you dont mind…Thanks…

Series Circuit Question?

I have been trying this question for some time now and I don’t think there is a way to answer it, but I could be mistaken. Here is the question word for word,

“When an ammeter A is added to a circuit to measure the current its acts as a series resistor
of resistance R. The circuit of Figure 3 consists of a 6.0V supply of negligible internal resistance
connected to two equal resistors and the 0-100 mA ammeter A.
a) Write down the total resistance in the circuit:
(i)before, and (ii) after the ammeter is added
b) Show that the current before the ammeter is added is 30mA
c) The ammeter reads 20mA when it is in the circuit. Calculate its resistance R
d) A perfect ammenter shouldn’t alter the current it is measuring. Suggest the best value
of the resistance R to make the ammeter perfect. ”

I think the course I am on assumes that the circuit is a DC power supply. The only answer that really stumps me is the very first question.

I have the answers but I want to know the intermediate steps to the answer. The answers are for the questions are: ” 4 a) i) 200 ohms ii) 200ohms + R c) 100ohms d) infinite”

As I said I only really need help on the first part but thought you might need the whole question.

Thank you very much in advance.
EDIT: I feel like a donkey’s arse, you are totally right Figure 3 does show the circuit, and shows the resistors with 100ohms, I suppose my brain is slowing down. Thanks for all your help

Calculating error in Physics lab report?

I’m handing this report in a few hours and there’s a little detail I want to sort out. We did the Franck-Hertz experiment about atom excitement, and gathered data of accelerating voltage and anodic current. Then I put the data in a diagram, which naturally shows curves that go up and then down (kind of like sinusoid, but it’s not a sine function). The diagram was current with respect to voltage. We were asked to find the distances between the local minima (in volts) and then their mean and error.

The error on our experimental voltmeter was +/- 0.1 V. I can easily find the mean, but I’m not confident about it’s error… So should I use this error of the voltmeter (which makes sense, since the mean is 5 Volts and the energy of the first excited state of Hg -which is what we want to find- is 4.9 eV) or should I use some kind of error propagation (which in turn doesn’t make sense, since I don’t have any function but a mean).

Thank you!

Wireless by arduino i want to make tow devices connect with each other one has transmitter and the other has r?

hello,
i want to make tow devices connect with each other one has transmitter and the other has receiver i want them both operated with battery i want to use bluetooth 4.0 or any bluetooth i want to make the project with arduino but in the end i want the devices to work without the arduino, i want to know what do i need for this project electronics and tools, i already have:
-Ultimate Arduino Microcontroller Pack
-digital multimeter
-Arduino UNO Rev.3
and can we transmit signals from ANT transmitter to WIFI receiver
thank you

Can someone help me with these QuestiOn?

When electric current is flowing in a circuit, if the voltage applied to the circuit is increased,
A. the resistance will increase.
B. the current will increase.
C. the resistance will decrease.
D. the current will decrease.

2. Which of the following information sources will not be directly affected by the Telecommunications Act of 1996?
A. Telephone services
B. The Internet
C. Newspaper publishing
D. Cable television

3. Porcelain, paper, glass, and rubber are all examples of electrical
A. conductors.
B. batteries.
C. insulators.
D. grounds.

4. A testing instrument that an electronics technician will connect to selected points inside a piece of electronic equipment and measure electrical values such as ohms, volts, and amperes is called
A. a signal generator.
B. a power supply.
C. an oscilloscope.
D. a multimeter.

FIGURE A-1—Use this illustration to answer Question 5.

5. Look at the four schematic symbols shown in Figure A-1. Each of the symbols is labeled with a number. Which of the following statements about these symbols is correct?
A. Symbol 1 represents a diode, symbol 2 represents a resistor, symbol 3 represents an LED, and symbol 4 represents a transistor.
B. Symbol 1 represents a diode, symbol 2 represents an LED, symbol 3 represents a transistor, and symbol 4 represents a resistor.
C. Symbol 1 represents a transistor, symbol 2 represents a resistor, symbol 3 represents an LED, and symbol 4 represents a diode.
D. Symbol 1 represents a transistor, symbol 2 represents a diode, symbol 3 represents a resistor, and symbol 4 represents an LED.

6. Which of the following is a correct definition of the term rectification?
A. Rectification is the opposition to current flow in a circuit.
B. Rectification involves sensing an electrical quantity and converting it to a signal.
C. Rectification is the conversion of AC current to DC current.
D. Rectification refers to the connection of components into a circuit.

FIGURE A-2—Use this illustration to answer
Questions 7–10.

7. Look at the simple circuit illustrated in Figure A-2. What will happen when only switch S1 is closed?
A. The light bulb will light up.
B. Current will flow in the circuit.
C. The resistance of the circuit will increase.
D. Nothing will happen—the light bulb won’t light up.

8. In the circuit shown in Figure A-2, what will happen when switches S1 and S3 are both closed?
A. The light bulb will light up.
B. Current will flow in the circuit.
C. The resistance of the circuit will increase.
D. Nothing will happen—the light bulb won’t light up.

9. In the circuit shown in Figure A-2, what will happen when switches S2 and S3 are both closed?
A. The light bulb will light up.
B. Current will flow in the circuit.
C. The resistance of the circuit will increase.
D. Nothing will happen—the light bulb won’t light up.

10. In the circuit shown in Figure A-2, which switches must be closed in order for the light bulb to light up?
A. Only switch S1 needs to be closed in order for the light bulb to light up.
B. Only switches S1 and S2 need to be closed in order for the light bulb to light up.
C. Only switches S1 and S3 need to be closed in order for the light bulb to light up.
D. Only switches S2 and S3 need to be closed in order for the light bulb to light up.

11. At a job interview, the most effective way to prove your proficiency to a prospective employer is to show that you have
A. membership in several professional organizations.
B. certification as an electronics technician.
C. experience with on-line research.
D. your own test equipment.

12. Which one of the following letters is used as an abbreviation when representing a unit of electric current?
A. E
B. R
C. C
D. A

FIGURE A-3—Use this illustration to answer Question 13.

13. Safety is a concern around electronic equipment of all types. When you see the sign and the symbol shown in Figure A-3, what particular safety hazard may exist?
A. High voltage
B. Laser light
C. Delicate equipment
D. Radioactivity

14. Which of the following statements about light-emitting diodes is correct?
A. Light-emitting diodes conduct current in either direction in circuits.
B. Light-emitting diodes are used as indicators in circuits.
C. Light-emitting diodes have very short life-spans in circuits.
D. Light-emitting diodes are used as rectifiers in circuits.

15. On a printed circuit board, electronic components will be mounted
A. from the substrate side of the board.
B. from the side of the board that contains the conducting paths.

What happens to the voltmeter when the lamp is unscrewed in a circuit?

Like in a normal circuit with a:
Batt, Lamp, Switch, ammeter, and a Voltmeter.
And another question:
What’s the relationship between the Potential Difference (voltmeter) and the bulb’s brightness?

Please answer this ASAP!
I need this quick!!
Thanks! (:
Oh yeah, I also meant the voltmeter is parallel to the lamp.