2. A coil wire has a resistance of 250 at 20°C and the resistance of 25.17 at 35°C. What is its temperature coefficient of resistance?

Q: A step up transformer has 79 turns in the primary coil and 425 turns in secondary coil. The primary…

A: Given, Number of turns in the primary coil=79turns Number of coil in the secondary coil=425turns…

Q: What is the direction of the magnetic force on a positive force if V=right; B=into the page?

A:

Q: rocket is launched vertically at 3.1 km/sec. How high does it go? Neglect air drag.   ( Radius of…

A: rocket is launched vertically at 3.1 km/sec. How high does it go? Neglect air drag.   ( Radius of…

Q: that driver of tind the mesI ef Car af 28 m)s amd of en orgy· how 56876

A:

Q: what will happen to the current directions if the polarity of the nine-volt battery is reversed?

A:

Q: You are mixing 35 grams of water at 15 ◦C with 68 grams of water at 75 ◦C. Assuming there is no heat…

A: mixing 35 grams of water at 15 ◦C with 68 grams of water at 75 ◦C.

Q: Three resistors:R1 = 3 Q,R2 = 6 Q, and R3 = 9Q are connected in series to each other and to a 36 V…

A:

Q: A NEGATIVE charge moving with a constant velocity of magnitude v enters a region of a uniform…

A: A negative charge moving with a constant velocity of magnitude v enters a region of a uniform…

Q: Calculate the equivalent resistance between A and B. 5 ohm 10 ohm 15 ohm 20 ohm B A a) 60 ohm B b)…

A: We have a circuit with four resistances R1=5 ohm, R2=10 ohm, R3=20 ohm and R4=15 ohm which are…

Q: You R1 R2 ミ20v 15 Q What is the equivalent resistance of the parallel circuit if R2 is 17 ohms?…

A:

Q: A body does 18 Joules of work in 3 seconds. What is it's power ?

A: Given data :                     Time  Taken    =    t                    Work done    =    W…

Q: 1. A body is thrown vertically upward with an initial velocity of 9m/s. Assuming that it falls…

A: Applying first equation of motion V= U-gt. Here V is final speed U is initial V= 9-9.8×2.5 V= -15.5…

Q: A car of wheat weight 330 kg. To what height should it be raised so that potential energy is 8860J?…

A:

Q: A simple circuit with a 200 ohm resistor is connected to a power source. What will happen when the…

A: Given: The intiaal resistance of the circuit is 200 Ohm.  The final resistance of the circuit is 100…

Q: How much electrical energy (in kilojoules) is transferred to thermal energy in 3.03 hours by an…

A: resistance = R = 488 ohms potential = V = 85 V time = t = 3.03 hours

Q: 6) Please don't write on a paper. I can't understand handwritten. Find the force exerted by…

A: Q6.Given that Area of the sheet A = 300000 cm 2  = 30 m2 Solar intensity I = 1350 W/m2

Q: Q5 A large cubical block of wood is floating upright in a lake. The density of water is 1000 kg/m³.…

A: We need to find the density of the floating block, given the time period of its SHM in water is 2…

Q: The following two questions refer to the diagram below, in which a mass is attached to a string and…

A:

Q: A current of 26 A flows through a conductor for 10 s. What amount of charge passes through the…

A: Given data :                     Current     =     I                        Time      =     t…

Q: 16. Distance = 60 m, final velocity = 8 ms-1, time taken = 12s. Find the initial velocity. a) 1m/s…

A: Given: The distance: d = 60 m. The final velocity: v = 8 ms-1. The time taken: t = 12 s.   To find…

Q: 1. Initially at rest, acceleration = 4 ms-², time taken = 8 s. Find the distance. %3D a) 100m b)…

A:

Q: A large cubical block of wood is floating upright in a lake. The density of water is 1000 kg/m³. You…

A:

Q: If the values for frictional force are given: 8.83, 9.81, 11.77, 12.76 and 14.72 and for…

A: normal force frictional force 16.68 8.83 19.62 9.81 22.56 11.77 25.51 12.76 28.45…

Q: Find the total current in the circuit. R1 = 20 ohms %3D R2 = 27 ohms R3 = 9 ohms -12 V R1 R2 R3…

A:

Q: If your body temperature is 37°C, then you're giving off the greatest amount of infrared light at a…

A: Since you have posted a question with multiple sub-parts, we will solve first three sub parts for…

Q: Find the magnetic field (positive magnitude only, no direction) at point P. P I = 12.0 AO- 2.40 m I2…

A: We have to find the magnetic field at point P.

Q: An iron rod becomes magnetic when the magnetic domains point in the same direction its electrons…

A: Correct answer - (a) the magnetic domains point in the same direction

Q: 4. Initial velocity = 3 ms-', final velocity = 5ms-', time taken Find the distance. 10 s. a) 40m b)…

A:

Q: The wavelength of this longitudinal wave is m, if the length of the slinky is 1.6 m. 600000…

A: Crest A crest point on a wave is the maximum value of upward displacement within a cycle. A crest is…

Q: A container holds 4.0 x 1022 molecules of an ideal gas at 0 °C. A piston compresses the gas, doing…

A:

Q: A bus having mass of 1200 kg achieve the velocity of 4 m/s in 8 seconds. Find the required force to…

A:

Q: Radioactive tadium has half life of approx 1,599 years. This initial quantity is 19 grams. How much…

A:

Q: 6 μF 6 μF 6 μF 6 μF 4 μF 4 μF 6 μF 6 μF 6 μF HE

A:

Q: Slides and Sticks! m = 0.250 kg M = 0.500 kg A small block with mass m = 0.250 [kg] slides down a…

A:

Q: What is the equivalent resistance for the resistors in the diagram? 10.0 2 6.0 2 2.0 2 4.0 0 13.0 W…

A: The circuit diagram is shown below.

Q: Four identical metallic objects carry the following charges: +1.49, +6.33, -4.69, and -9.03 µC. The…

A:

Q: A 400-N body starts up the incline of 30o with the horizontal (fk = 0.2) with a velocity of 3m/s.…

A:

Q: Please match the following physics equations with their descriptions. Describes how Speed changes…

A: Let the initial velocity = voLet the final velocity = v Let the acceleration = a Let the distance…

Q: 2. Initial velocity = 3 ms-', acceleration = 2 ms-2, time taken = 6 s Find the final velocity. (m/s)…

A: Given: The initial velocity is 3 m/s. The acceleration of the object is 2 m/s2. The time taken by…

Q: The fifth-order bright fringe of 293.59-nm light is observed at an angle of 37.5° when the light…

A:

Q: A 6000-dm length of wire stretches between two posts and carries a 0.0124-mA current. Find the…

A:

Q: An electron (m = 9.11 x 10-31 kg, q = -1.60 x 10-19 C) moves at 5380 m/s in a region of uniform B =…

A: The mass of the electron, m=9.11×10-11 kg The charge of the electron, e= -1.60×10-19 C The velocity…

Q: In a triple-spool engine, the speed of which spool is always indicated? low pressure spool high…

A: A spool is basically  the combination of an engine compressor and high-pressure turbine that drives…

Q: Slides and Sticks! A small block with mass m = 0.250 [kg| slides down a frictionless inclined plane…

A:

Q: An arrow is shot upward from the top of a 740 ft building with an initial velocity of 68 ft/s. The…

A:

Q: The speed of light in an unknown medium is measured to be 4.76 x 10^8  m/s. (a) What is the index or…

A: The Refractive index of a medium = Speed of light in vacuum / Speed of light in the medium .…

Q: As shown in the figure, a layer of water (n=1.333) covers a slab made of glass (n=1.523) which is on…

A:

Q: 11. Find the potential at the center of curvature of the (thin) wire shown in the figure below. It…

A:

Q: 3. A Styrofoam cooler has total wall area (including the lid) of 0.80 square meter and wall…

A:

Q: What will be the total time to cover 3600 m at 2 meter per seconds?

A: What will be the total time to cover 3600m at 2m/s.

Microscopic view of current

In physics, the term current is expressed as the rate of flow of electric charges across the area per unit time (I=q/t). It propagates along in the direction of the motion of positive charges. When the current is caused by the motion of electrons, the direction of the current is opposite to the flow.