An aluminum wire has resistance of 80 ohms at 30 degree Celsius. And determine its resistance when its temperature is lowered to -10 degrees celcius.

Q: 7. A daredevil is shot out of a cannon at 45.0° to the horizontal with an initial speed of 15.0 m/s....

A: Equation of trajectory of a projectile is given by  y =xtanθ -gx22u2cos2θwhere θ is angle of project...

Q: A boll rounds a 42 m radius curve at 18 m/s. The magnitude of it's acceleration in m/s2

A: Given data :                  Speed  =  V                 Radius  =  R        To find :             ...

Q: Three particles of masses 50 g, 100 g and 150 g are placed at the vertices of an equilateral triangl...

A: x coordinate of centre of mass  xcm  = (m1 x1 + m2 x2 )/ m1 + m2   y coordinate of centre of mass  Y...

Q: Given data : Mass-40 kg Density-1300 kg/m3 Find volume

A: Given data: Mass-40 kg Density=1300 kg/m3 Using the concept of density  As we know   Density = mass ...

Q: Suppose three identical charges q1=92=93=15 µC are placed on the corners of a right triangle. Our go...

A:

Q: When light passes between two different media (i.e. oil and water), and the index of refraction of t...

A:

Q: Three resistors, RA=4 k N, RB=1.0 N, and Rc=2 N are connected to a battery providing potential diffe...

A:

Q: 17.41 A 6.00 kg piece of solid copper metal at an initial temperature T is placed with 2.00 kg of ic...

A: mass of piece of copper = 6 kg Initial temperature of copper = T mass of ice = 2 kg Initial temperat...

Q: You would like to create a reflection grating like the one shown, with an incident angle (0) of 49°....

A:

Q: An astronomical telescope has an objective with a focal length of 0.80 m and an ocular with a focal ...

A: focal length of objective (fo) = 0.80 m focal length of ocular (fe) = 5.9 cm = 0.059 m   

Q: cohesion, then the liquid wets the container *: the curvature of the surface of the liquid will be O...

A:

Q: The lenses in the figures below are all made of glass of index 1.50 and have surfaces with radii of ...

A:

Q: The potential energy of a system is described the the expression, U = axª – Bx² + y At what values o...

A:

Q: After walking 25.6 meters due North, a woman checked his pocket and found out that his wallet was mi...

A:

Q: FM radio station KRTH in Los Angeles broadcasts on an assigned frequency of 101 MHz with a power of ...

A:

Q: Find the far point of an eye for which a prescribed lens has an optical power of -0.58 d. (b) Find...

A:

Q: Three point charges are fixed rigidly at the vertices of an isosceles triangle ABC whose base AB is ...

A:

Q: A steel wire having a radius of 2.0 mm, carrying a load of 4kg, is hanging from a ceiling. Given tha...

A:

Q: Given the acceleration of gravity at a surface of Planet Q is 1/8 of what it is on Earth and that Q ...

A: The acceleration due to gravity at the surface of a planet is given by g = GMr2, where G = Universal...

Q: Three charges, QA=-4.1 µC, QB=5.0 µC, and Qc=2.9 µC are places on xy plane as shown in the picture b...

A: We have 3 charges QA=-4.1 uC, QB=5 uC and QC=2.9 uC at positions r1=(0,3.4), r2=(-3.4, -3.4) and r3=...

Q: An object with charge q = -6.00 x 10^{-9} C is placed in a region of uniform electric field and is r...

A: Given data- Charge q=-6.00×10-9 C Kinetic energy at point B is  KEB=3.00×10-7 J Electric potential a...

Q: Which causes a greater effect to the magnitude of the velocity of an object in uniform circular moti...

A: A change in force requires either a change in magnitude or a change in radius. They are all linked. ...

Q: How much current must you run through a 0.100 m long solenoid coil with 100 loops to make a magnetic...

A:

Q: Car B gaps Car A by 90 ft as they travel along neighboring highway lanes at t = 0. Determine (a) whe...

A: Part a) Initial time is at t= 0 sec. Let the time taken for the overtake is 't'. The initial velocit...

Q: Determine the largest weight W that can be supported by two wires shown in Fig. The stress in either...

A: Maximum weight supported by the given system of wires is equal to the sum of vertical components of ...

Q: A microscope objective with a magnification of 12 is used in a microscope with a magnification of 51...

A: Given, Magnification of microscope, m = 51 magnification of objective lens, mo = 12 Ocular image is ...

Q: A slab is subjected to two forces F and F, of same magnitude F as shown in the figure. Force F2 is i...

A:

Q: The volume flow rate in an artery supplying the brain is 3.6 x 10-6 m3/s. a) If the radius of the ar...

A: The cross sectional shape of a artery is a circle. The area of a circle of radius r is A = πr2 Flow ...

Q: Calculate the rate of heat conduction through house walls that are 13.0 cm thick and that have an av...

A:

Q: What is the minimum diameter (D) of the Cu wire so that AV < 1.5 V? Ocu = 6.07 x 107 (Ohm-m)1 -{ = 1...

A: Given : Current (I) =2.5 A length (L) = 100 m Conductivity (σ) = 6.07×107 Ω.m-1 Voltage (V) &lt;1.5 ...

Q: If the Earth has no rotational motion, the weight of a person on the equator is W. Determine the spe...

A:

Q: Try this: CONDUCTIVITY PROBLEM What is the minimum diameter (D) of the Cu wire so that AV < 1.5 V? O...

A: Given, Current in the wire, I = 2.5 A length of the wire, L = 100 m conductivity of the wire, σcu = ...

Q: From a height of 70 ft above the ground, an item is flung vertically upward. the object's starting v...

A: Given  Initial height, h = 70 ft  Initial velocity, U = + 30 ft/s  Acceleration, A = -32.2 ft/s2    ...

Q: 21.45 • Three parallel sheets of charge, large enough to be treated as infinite sheets, are perpendi...

A:

Q: This figure shows a sinusoidal wave that is traveling from left to right, in the +x-direction. Assum...

A:

Q: An ordinary magnifying glass produces an image which is 1. virtual and inverted 2. none of these 3. ...

A: 4. Virtual and erect

Q: 2. A new underwater robot is used to explore the corals in the West Philippine Sea. The seafloor lie...

A:

Q: 9) Four bars, all exactly the same size, are placed with one end in boiling water. The times taken f...

A: The material with the less thermal conductivity takes more time to conduct heat through it. The high...

Q: in Bohr's hydrogen model, the electrons move in a circular orbit around the proton and its momentum ...

A:

Q: As an object acquires a positive charge, its mass usually a. decreases. b. increases. c. stays the s...

A:

Q: a) 1.9 m b) 52 m c) 2.7 m d) 5.1 m e) 2.2 m

A:

Q: Determine the charge in each capacitor and the voltage across each capacitor in Circuit B. Given: V3...

A: The charge stored in a capacitor connected to a voltage source is given by Q = CV, where C = the cap...

Q: A wire of radius R and length L has a resistance of 14 Q. What is the resistance of a wire made from...

A:

Q: 5) Submarines need to

A: Given, An experimental research submarine with a volume = 15,000 liters = V1 The internal pressure =...

Q: Current (I) Voltage (V) Resistance (R) Power 0.40 17 20 75 1.5 220 110 55 68 210

A: Voltage V = IR Power= I2 R

Q: An object is placed 9.50 cm in front of the cornea. (The cornea is thin ans has approximately parall...

A:

Q: Three negative point charges lie along a line as shown in the figure below. Find the magnitude and d...

A:

Q: A solid cylinder sits on top of a solid cube as shown in the figure. How far above the table's surfa...

A:

Q: ng outputs and 485 V. The transformer's input voltage is 240 V, its maximum input current is 5.00 A,...

A:

Q: Three particles of masses 50 g, 100 g and 150 g are placed at the vertices of an equilateral triangl...

A:

Temperature Variance of Resistance

Electrical resistance or simply resistance is the property of a material that opposes the free flow of electrons through it. The total amount of resistance to the flow of charges (or current) is affected by many factors like the length of the conducting material, its cross-sectional area, resistivity, and temperature.