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Resistors in Series and Parallel   Data Table 1: Resistors in Series Battery voltage: _____V. Expected current (from V=IR): ______ mA            Resistor value (?) color code; % variance R value (?) DMM R value ?) calculated from R=V/I DMMCurrent, mA DMMvoltage, V Calculated voltage, V from V=IR R1             R2             R3             Req N.A.           Expected Values Using V = IR, and Req = R1 + R2 + R3   R (?) Current (mA) Voltage (V) R1       R2       R3       Req       Data Table 2: Resistors in Parallel Battery voltage: _____V   R value (?) DMM DMM Voltage, V DMM Current, mA Calculated Current, A from V=IR R1     I1 = I1 = R2     I2 = I2 = R3     I3 = I3 = Req     I= I= Expected Values Using V = IR, and !/Req = 1/R1 + 1/R2 + 1/R3 R (?) Current (mA) Voltage (V) R (?) Current (mA) Voltage (V) R1       R2       R3       Req       Data Table 3: (Resistors in Combination) Battery voltage: _____V.   R Value (?) DMM DMM Voltage, V DMM Current, A Calculated Current, A from V=IR R1         R2         R3         R2 + R3 Parallel         R1 + R2 + R3         Req         Expected Values: Resistors in Combination   R value (?) Voltage, V Current, A R1       R2       R3       R2 + R3(parallel)       Req       *Note: Expected value for current is calculated and known to be the current through R1 and R23. This value was is used to determine voltages across R1 and R23. Then the current through R2 and R3 is calculated by the formula V = IR.   4. Calculations: Now using the equation V = IR, calculate the expected values of the currents and voltages of all resistors tested above. Create new tables for these results. Use only the voltage supplied by the 1.5V battery and the resistance values for the three resistors. When using the current in calculations (V=IR), you must convert mA to A by dividing the mA value by 1000. For example, in a circuit with a 1.5V battery and a 500 ? resistor, what is the expected current? V = IR or I = V/R = 1.5/500 = 0.003A or 3 mA. Series Resistors: Req = R1 + R2 + R3. First, find the equivalent resistance Req for all resistors involved. Then find the current through Req. The voltage for each resistor can be calculated using the resistor value, current and the equation V=IR. Parallel Resistors: 1/Req = 1/R1 + 1/R2 + 1/R3 or Req = (R1 x R2 x R3) / (R1 + R2 + R3). Using the measured voltage, calculate the currents for each resistor. The total circuit current, I, is simply the sum of the currents through each resistor I1, I2, and I3. Combination: First, find the equivalent resistance R23 of the parallel resistors, then the equivalent resistance Req for the entire circuit. Next, find the current through Req, and this should be the current through R1 and R23. Using that current, find voltages across R1 and R23.Then you can find the current through R2 and R3. 

This assignment is for Catherine Owens

you push a 35 newton object for 3 seconds. find the work you did.

I have 30Q and I need help

I need the answers with steps. please make sure that the answers are correct.  I need it ASAP.

1) A rectangular plate has a length of (24.0 ± 0.2) cm and a width of (9.4 ± 0.1) cm. Calculate the area of the plate, including its uncertainty? 2)Carry out the following arithmetic operations. (Give your answers to the correct number of significant figures.) -(a) the sum of the measured values 756, 37.2, 0.83, and 2 -(b) the product 0.003 2 ? 356.3 -(c) the product 5.620 ? ? 3)A rectangular building lot has a width of 69.0 ft and a length of 123 ft. Determine the area of this lot in square meters. 4)Suppose your hair grows at the rate 1/31 in. per day. Find the rate at which it grows in nanometers per second. Because the distance between atoms in a molecule is on the order of 0.1 nm, your answer suggests how rapidly layers of atoms are assembled in this protein synthesis.

Lab Report                                                                Name: ____________________                                                                                                   Section: ___________________     Polarized Light     Part 2 - Crossed Polarizers – Quantitative:   DATA TABLE: Degrees Resistance Light intensity (1/R) 0     15     30     45     60     75     90     105     120     135     150     165     180     195     210     225     240     255     270     285     300     315     330     345     360                 Graph light intensity, 1/R vs. angle between polarization axes. Note that the light intensity indicator 1/R is an arbitrary unit. If we had a true light intensity meter our light intensity units would be in “lux”.     Question:   If you buy polarizing sunglasses how can you be sure they are truly polarized?   

    Introduction             This lab introduced a different device: The Junction Field Effect Transistor (JFET) also widely used in electronics. We will examine the DC characteristics of JFETs and will generate the JFET’s curves.       Remember that your lab report will need to include your measurements, calculations, screenshots, etc. as indicated at the end of this outline.       Please see attached homework

I just need the final answer not the steps.  please make sure  that the answers is correct. 

Your friend has slipped and fallen. To help her up, you pull with a force F. The vertical component is 130 newtons, and the horizontal component is 150 newtons. Find the magnitude of F and the angle.