Start your trial now! First week only $4.99!*arrow_forward*

Question

A copper wire 100m long with cross-sectional area of 2x10 -4 cm 2 is

heated from room temperature of 25 C to 200 C. Find

a) The initial resistance of wire

b) The increase in resistance from 25 to 200 Celsius

Tagged in

Science

Physics

Find answers to questions asked by students like you.

Q: A uniformly charged, straight filament 4.90 m in length has a total positive charge of 2.00 µC. An u...

A: According to the given data, Length of the filament (l) = 4.9 m; Total positive charge on the filame...

Q: The efficiency of a light source is the percentage of its energy input that gets radiated as visible...

A: Photons with greater energy are absorbed. Since, the efficiency of a light source is the percentage ...

Q: 21. GO An asteroid is moving along a straight line. A force acts along the displacement of the aster...

A: Given data: Mass of the asteroid is m=4.5×104kg Initial velocity of the asteroid is u=7100 m/s Final...

Q: A window washer pulls herself upward using the bucket-pulley apparatus shown in (Figure 1). The mass...

A: Click to see the answer

Q: Section 9.1 The Action of Forces and Torques on Rigid Objects 1. The wheels on a moving bicycle have...

A: Rigid body in equilibrium

Q: A 60 kg block slides along the top of a 100 kg block. The lighter block has an acceleration of 3.8 ...

A: Click to see the answer

Q: If a scuba diver fills his lungs to full capacity of 5.5 L when9.0 m below the surface, to what volu...

A: Click to see the answer

Q: The Special Olympics raises money through “plane pull” events in which teams of 25 people compete to...

A: Acceleration of the plane is a=2dt2=23.7 m6.1 s2=0.2 ms2 Velocity of the plane is v=u+at=0+0.2ms26....

Q: 16-53. If the wedge moves to the left with a constant velocity v, determine the angular velocity of ...

A: Applying law of sines, xAsin(ϕ-θ)=lsin(180o-ϕ)xA=lsin(ϕ-θ)sin(180o-ϕ)=lsin(ϕ-θ)sinϕ

Q: What magnitude of force must the worker apply? How much work is done on the crate by the workers pu...

A: Click to see the answer

Q: A vector displacement A in xy-plane has an x-component of 4.7 m. The angle between the vector A and ...

A: Click to see the answer

Q: Determine the magnitude and direction of the electric field along the axis of the rod at a point 32....

A: Given data: The length of the rod is: L=12 cm=0.12 m The total charge on the rod is: Q=-20.0 μC=-20×...

Q: What pressure difference is required between the ends of a 2.0-m-long, 1.0-mm-diameter horizontal tu...

A: Given: Length of the tube = 2 m The diameter of the horizontal tube = 1mm The temperature of the tub...

Q: An ice skater is preparing for a jump with turns and has his arms extended. His moment of inertia is...

A: Click to see the answer

Q: If the acceleration, a(t), is given, integration can be used to derive v(t) and x(t). The follwing e...

A: (4) The first kinematic equation for the car is Here, u is the initial velocity of the car, a is th...

Q: Is there a real force that throws water from clothes during the spin cycle of a washing machine? Exp...

A: Washing machine

Q: Use the fact that 1m3= 1000 liter and show that 1 liter = 1000 cm3

A: 1 m=102 cm1m3=102 cm3=106 cm31000 liter=1m3103 liter =106 cm31 liter=106 cm3103 =103 cm3 ...

Q: The titanium shell of an SR-71 airplane would expand when flying at a speed exceeding 3 times the sp...

A: The length of the rod L0 at 0 degree Celsius and the length of the rod L at T degree Celsius can be ...

Q: Forces of 50 N at 40 degrees, and 50 N at an angle of 250 degrees, measured counter-clockwise from t...

A: F⇀net=50 Ncos40°i^+50 Nsin40°j^+50 Ncos250°i^+50 Nsin250°j^=38.3 Ni^+32.1 Nj^-17.1 Ni^-47 Nj^=21.2 N...

Q: Explain how relative directions of force and displacement determine whether the work done is positiv...

A: Click to see the answer

Q: when atwood machine is moving what shape is the velocity vs time plot for the motion? Why

A: Given: Need to find the velocity vs time plot for the motion of the Atwood machine.

Q: 3. The equation of motion of a SHM oscillator is x=0.5msin(2πf)t, where x is in meter and t is in se...

A: Click to see the answer

Q: Sprinters push off from the ball of their foot, then bend their knee to bring their foot up close to...

A: The technique behind the sprinting is similar to oscillation rigid pendulum. So, the frequency of os...

Q: A 59.0-kg ice skater is moving at 4.07 m/s when she grabs the loose end of a rope, the opposite end ...

A: Given values: Mass of the skater, m=59.0 kg Velocity of the skater,v=4.07 m/s Radius of the circle, ...

Q: Where does most of the radiation you encounter originate?

A: There is radiation all around us and the background radiation comes from both natural and man made s...

Q: The uranium atom is the heaviest and most massive atom among the naturally occurring elements. Why,t...

A: We know, density has only to do with the mass of the atoms that make up a material, but it also deal...

Q: A dart is loaded into a spring-loaded toy dart gun by pushing the spring in by a distance d. For the...

A: Click to see the answer

Q: Problem 2: A rod of m = 0.25 kg rests on two parallel rails that are L = 0.85 m apart. The rod carri...

A: Given: Mass of the rod, m = 0.25 kg Distance between the rods, L = 0.85 m Current, i = 2.7 A Unifor...

Q: An investigator has made a solenoid by wrapping 100 turns of wire on a tube that is 10 cm long and 2...

A: μ0=Vacuum permeabilityi=Currentr=Radius of solenoidl=Length of solenoid

Q: A satellite has a mass of 6398 kg and is in a circular orbit 4.41 × 105 m above the surface of a pla...

A: The equation for the period of a satellite in a circular orbit at a height H from the surface of the...

Q: An empty parallel plate capacitor is connected to a battery that maintains a constant potential diff...

A: Click to see the answer

Q: A sinusoidal wave moving to the left has a wavelength of 5.0 cm and a frequency of 50 Hz. At t = 0 s...

A: Given: Frequency, f =50 Hz

Q: 1. What frequency of light is needed to produce electrons of kinetic energy 3.00 eV from illuminatio...

A: Click to see the answer

Q: Riders on the Power Tower are launched skyward with an acceleration of 4g, after which they experien...

A: (a) apparent weight, W'=m(g+a) that is, W'=60 kg(g+4g)W'=60 kg(5g)W'=60 kg(5)(9.8 m/s2)W'=2940 N

Q: Infrared light with a wavelength of 1870 nm is emitted from hydrogen. What are the quantum numbers o...

A: The expression for energy of emitted photon is Here, h is Planck’s constant, c is speed of light an...

Q: calculate density of air at 100 degrees Celsius and 2.105 Pa. It's known density of air is 0 degrees...

A: Click to see the answer

Q: How to solve this problem #9

A: (9) The given values are, u=0v=14.2 m/st=7.2 s

Q: In an intergalactic competition, spaceship pilots compete to see who can cover the distance between ...

A: Given: The distance is 3 Mkm. The time taken is 20 s.

Q: A comet goes around the sun in an elliptical orbit at its farthest point 320 million miles from the ...

A: Given data *The furthest distance between the comet and the sun is r1 = 320 million miles = 320 × 10...

Q: 14. A commonly used method of fastening one part to another part is called "shrink fitting." A steel...

A: Click to see the answer

Q: How to Calculating the Force Exerted on a Point Charge by an Electric Field?

A: Force Exerted on a Point Charge by an Electric Field

Q: You stand on a top of a lighthouse while your friend is on the ground outside. You peered into the w...

A: Let us consider the person standing at top of the light house be A and that standing on the ground b...

Q: ?

A: Click to see the answer

Q: 3. The equation of motion of a SHM oscillator is x=0.5msin(2πf)t, where x is in meter and t is in se...

A: Hello. Since your question has multiple parts, we will solve first question for you. If you want rem...

Q: How to solve problem number 1

A: Given: The velocity of the plane = 95.5 miles/hr = 42.69 m/s Final velocity = 0 Time taken = 21.3 se...

Q: Find the acceleration for a force of 2 N acting on 2 kg. Express your answer to one significant figu...

A: Acceleration F=maa=Fm

Q: Arc welding uses electric current to make an extremely hot electric arc that can melt metal. The arc...

A: Given: Arc welding uses electric current to make an extremely hot electric arc that can melt metal. ...