A wire of length L and resistance R is stretched so that the length is doubled and area of cross section halved. How will (i) resistance change and (ii) resistivity change.

Q: When turning on a motor, it reaches a nominal speed of 2,500 rpm in a time of 12 s; when the motor…

A: Apply the first angular kinematic equation. Apply the second kinematic equation.

Q: Ice has a dielectric constant of 3.2. If capacitor A originally has a capacitance of 0.60 F, what is…

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Q: A dielectric slab is slowly inserted between the plates of a parallel plate capacitor while the…

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Q: From the following list, select the sources (other than your textbook), where you can locate…

A: Solution

Q: An electric field of 5000 N/C is in the +y direction. A charge of 3.00 µC is moved a distance of…

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Q: A rickshaw puller pulls the rickshaw by applying a force of 140 N. If the rickaw moves with constant…

A: Given Data: The force applied to pull the rickshaw is: F=140 N The velocity of the rickshaw is: v=45…

Q: How far is the second dark fringe to the right of the central bright fringe in the double-slit…

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Q: Using Newton's 2nd Law of Motion F=ma, complete the calculation below. What is the mass of a truck…

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Q: You have a capacitor in the shape of a cylinder whose inside radius is 1.5 cm and length of 35 cm.…

A: inner radius of cylinder (r) = 1.5 cm Outer radius of cylinder (R) = 3.5 cm Length (L) = 35 cm =…

Q: Find the maximum torque on a 100-turn square loop of a wire of 10.0 cm on a side that carries 15.0 A…

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Q: Part A What is the change in mechanical energy of the airplane if it climbs to a cruising altitude…

A: Given Mass of the airplane = 1865 kg Velocity of the plane = 94.5 m/s Height of the plane =  2520 m…

Q: Determine the wavelength of a wave based on the parameters provided. The wave has a frequency of 190…

A: Given data :   Wave  speed   =   v   Frequency   =   f        To find :          Wavelength

Q: A person on earth notices a rocket approaching from the right at a speed of 0.79c and another rocket…

A: Given  V1 = 0.79c  moving  from  right  to  left  . (w.r.t observer at earth)  V2 = 0.55 c    moving…

Q: (1a). Black body has emissivity value of 1, bu reality, the emissivity of real objects is less tl…

A: 1. black body has emissivity value is 1

Q: A particle's motion is following the position (x) versus time (t) equation of x(t) = 3t^2 - 5t +7,…

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Q: An aluminum ring of radius n = 5.00 cm and a resistance of 2.75 x 101 N is placed around one end of…

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Q: Find the equivalent resistance across the terminal A & B of the following electrical network.

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Q: is connected to a capacitor, what is the voltage across the capacitor after

A: we know the capacitor does not work at DC  power supply . Here when the battery connect with…

Q: at the same speed, is the magnetic force between them (a) attractive or (b) repulsive?

A: The proton are travelling to each other in samedirectionand same the speed the magnetic force…

Q: Ulade, dinu 4. A simple pendulum hangs in equilibrium. A frustrated student walks up to it and kicks…

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Q: 3. What is the maximum force on an aluminum rod with a 0.100-µC charge that you pass between the…

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Q: 1]Calculate the werk raguixed to be done to stop ot 8o km/n of 200 kg moning COY

A: Given data :     Velocity  of  car  =  v     Mass  of  car   =   m          To find :…

Q: A horizontal rectangular surface has an area of 8.96 x 10-4 m2 and is in a uniform magnetic field…

A: Given data:  A horizontal rectangular surface  Area (A) = 8.96×10-4 m2 Angle above the horizontal =…

Q: * 7.23 How much heat is required to raise the temperature of a 25.00 kg block of ice from -65°C to…

A: Please see the answer below.

Q: An electron moving along the negative x axis perpendicular to a magnetic field experiences a…

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Q: A 5kg object falls of a ledge that is 3m high above ground. Calculate the potential energy, the…

A: Mass=5kg H=3m

Q: The graph in the figure shows the position of an object as a function of time. The letters H- L…

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Q: Unpolarized light is sent into a system of three polarizing sheets. The angles θ1, θ2, and θ3 of the…

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Q: Consider the table below. The table is perfectly balanced and has a mass of 11.6 kg. The sides of…

A: Given Mass of the table  = 11.6 kg Sides of the table = 93.2 cm Added weight =  10.84 kg x = 35.6 cm…

Q: 21 If an object explodes when it collides, kinetic energy will increase. Is this elastic or…

A: 21. since, kinetic energy is not conserved. collision is inelastic. in elastic collisions kinetic…

Q: Velocity (m/s) 50 40 30 20 10 Time 4 6. 8. 10 12 14 (s) The diagram above shows the journey of a…

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Q: A space shuttle orbits Earth at a Speed of 21,000 km/hr. How far it travel in 5 hours?

A: Given  Speed (v) = 21000 km/hr time (t)  = 5 hr  Distance travelled in time  ' t ' Distance (d) =…

Q: A 1.5kg book is sliding along a horizontal surface. At point A, it is moving at 3.21m/s, and at…

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Q: What is the strength of the electric field in a 12-gauge copper wire with a diameter of 2.05mm that…

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Q: A 100-gram air track glider initially moves at 0.12m/s when it collides inelastically with a…

A: Apply the momentum conservation equation.

Q: 1. A particle has charge q = 0.100 C and mass m 100 grams. It is first accelerated from rest through…

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Q: (a) Young's double-slit experiment is performed with 595-nm light and a distance of 2.00 m between…

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Q: solenoid is a tightly-packed helical coil in which an electric current is made to pass through it.…

A: solenoid is a tightly-packed helical coil in which an electric current is made to pass through it.…

Q: Compare and contrast electrical voltage, current and resistance.

A: We have to compare and contrast electrical voltage, current and resistance.

Q: If you know that the two way time delay to the sand stone at (B) is 1.345 microseconds longer than…

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Q: Find the current of 3 R, 10Ω R, 200 10v 20v R, B

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Q: A wire of length L and resistance R is stretched so that the length is doubled and area of cross…

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Q: An object (s=0.65) floats in a liquid (s=0.80). 1. Determine the percentage of the volume above the…

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Q: 4. Using Amphere's Law, Find the magnitude of the magnetic field at a radial distance, R1, inside…

A: Ampere's circuital law is considered here

Q: How much current must flow for 1.0 E-3T of magnetic field to be present 1.0 cm from a wire?

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Q: 4. In the diagram below a particle of charge 0.250 C is moving with a velocity v = (6000 m/s)i. At…

A: The magnetic field produced by a moving charge is given by the equation B=qv×r^r2×10-7q is the…

Q: An air-filled parallel-plate capacitor has a capacitance of 1 pF. A wax dielectric is then inserted,…

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Q: . How is the capacitance of a parallel-plate capacitor affected by the potential difference across…

A: Capacitance is the ability to store charge

Q: q1=12C and q2=−10C are positioned at different coordinates as shown in the figure. Coordinate of…

A: We know that the electric field is given as  E→ = kqr2r^ where k is the coulomb's constant  q is the…

Q: A metal bar is being pulled on two metal The rails are separated by a distance of 0. 0.060T whose…

A: Givenv=0.4 m/sL=0.5 mB=0.060 TR=2 Ω