1. The ratio of the resistance of two wires made of the same material and of the same length is 1:5. Find the ratio of their areas and diameters.

Q: Dr. B uses his phone and the app phyphox to measure atmospheric pressure at different heights. At…

A: Pressure at the first floor (P) = 101300 Pa  Pressure at the roof of library (P') = 100172 Pa…

Q: Planet Dwovy circles its star at a distance of 8.75 × 109 km once every 325 Earth years.  The planet…

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Q: Kinematics A stone is dropped into a deep well and is heard to hit the water 4.35s after being…

A: We have a stone that is being dropped into a well (initial velocity u=0) and it hits the water at…

Q: Explain the difference between attractive and repulsive forces

A: We incur forces in our day to day lives. A person can never be in a state where he is not…

Q: In the figure, two circular arcs have radii a = 13.6 cm and b = 10.0 cm, subtend angle e = 71.0°,…

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Q: In a volleyball game held in BSU, A CE student player at position X serves the ball from a height of…

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Q: Two long parallel wires carry currents of 5.0 A and 8.0 A in the same direction. The wires are…

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Q: A 10.0 g marble slides to the left at a speed of 0.400 m/s on the frictionless horizontal surface…

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Q: 1) After the last week of physics class, you start playing with lasers and your fish tank at home.…

A: Given data: The wavelength of light is λ=405 nm. The refractive index of glass is ng=1.55. The…

Q: A dresser is being pushed by one person and pulled by another such that is slides across the floor…

A:

Q: What is the magnetic force on a particle that has 0.000500 C of charge and is moving at 2.50 × 105…

A: Answer:-  Given  Charge (q) = 0.000500 C  Velocity (V) = 2.50 × 105 m/s  Magnetic field (B) = 4.20 T…

Q: If the pressure in the hallway would suddenly drop by 15%, and the room temperature remained at…

A: In this question we have to find the amount of net force on the door. Please give positive feedback…

Q: Question Completion Status: QUESTION 4 At the instant switch S is dosed the current in the circuit…

A: At t = 0 , switch is closed . Initially when capacitor is uncharged , it behaves as a wire and allow…

Q: Particles of various masses, charges, and speeds are injected into a region in which a uniform E…

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Q: A potential energy function for system 1 is given by U1(x) = Cx2 + Bx3. The potential energy…

A: By definition of force  F = -dU/dx

Q: Two balls hung one after the other. The upper ball weighs 0.35N while the lower ball weighs 0.28 N.…

A: Given: Weight of upper ball, WA = 0.35 N Weight of lower ball, WB = 0.28 N

Q: A camera is equipped with a lens with a focal length of 40 cm. When an object 1.4 m (140 cm) away is…

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Q: A region of space contains an electric potential given by V(x,y,z) = 4x2y – 2z + 5x3yz2 . Determine…

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Q: Find the buoyant force on a 0.1 m^3 block of wood with density 700 kg/m^3 floating in a freshwater…

A: Given Volume of the block of wood is V=0.1 m3 Density of wood is given as ρwood=700 kg/m3   We have…

Q: A shell explodes into two fragments, one fragment 25 times heavier than the other. If any gas from…

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Q: In the figure, two circular arcs have radii a = 13.3 cm and b = 10.9 cm, subtend angle 0 = 74.0°,…

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Q: A bus travels 504 m between two stops. It starts from rest and accelerates at 1.5m/s2 until it…

A: Given Data, Distance between two stops (d)=504 m Acceleration (a1)=1.5 m/s2 Deceleration(a2)= 2 m/s2…

Q: Two asteroids strike head-on: before the collision, asteroid A (mA = 7.5 x 1012 kg) has velocity 3.3…

A: Given: The mass of asteroid A is 7.5x1012 kg. The mass of asteroid B is 1.45x1013 kg. The velocity…

Q: In an old-fashioned television set, electrons are accelerated through a potential difference of 24.9…

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Q: Find Density of object of mass 170 kg which accupies space of 5 m³ ?

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Q: 8. Draw the Motion Diagrams for a-t curve shown. Find s12 and v12. Vo = 5 m/s so = -3 m %3D a 5…

A: Mathematically we have,…

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Q: Given the v-t diagram, determine the acceleration ft/s^2 and distance in feet and distance covered…

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Q: What is the wavelength of a photon emitted when an electron in hydrogen goes from the n = 4 state to…

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Q: What is the specific gravity of a solid sphere that has a radius of 0.6 in and a mass of 1.34…

A: Radius = 0.6 inch  Mass = 1.34 ounce

Q: In the figure, point P2 is at perpendicular distance R = 22.4 cm from one end of straight wire of…

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Q: Q12: When applying the equations of kinematics for an ob- ject moving in one dimension, which of the…

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Q: Help with 11

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Q: (you choose how many) thất čăn áll sing at the san with 1. In a large choir, there are this many…

A: The loudness and intensity of sound are related as ,  dB= 10 log (I/I0). Where I is the sound…

Q: A radioactive isotope has a​ half-life of about 17 ​years, which means that if it starts with 1 kg…

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Q: A sky lantern which a child tied to a piece of stone on the ground at the side of a tall multi-…

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Q: If a 60 W electric heater has a current of 4 A at 20°C, how much resistance will be increase if the…

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Q: 6. A Ferris wheel with radius 14 m is turning about a horizontal axis through its center. The linear…

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Q: (a) What current is needed to transmit 250 MW of power at 400 kV? (b) What is the power dissipated…

A: Power =IrmsVrms

Q: 3) A SPRENG Love AND HAS SPRINC IS NATURALLY 16/Fr. FINO THE WORK DONE IN IS feer CONSTANT LONC, THE…

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Q: A box of mass m is pressed against (but is not attached to) an ideal spring of force constant k and…

A: Given that Mass of the box is = m Spring constant is = k Initial spring compressing distance is = x…

Q: position time 15.) Incorrect Consider the plot shown below (with right being the positive direction…

A: Slope of x-t graph gives velocity of object .

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Q: A uniformly charged solid spherical insulator has a radius of 0.30 m. the total charge in the volume…

A: Answer:-  Given  Charge (q) = 4.1 pc = 4.1 × 10-12 c  Radius (R) = 0.30 m  Position (r) = 0.16 m  K…

Q: A baseball hits a car, brcaking its window and triggering its alarm which sounds at a frequency of…

A: Original frequency = 1190 Hz Speed of boy (observer) = 7.8 m/s away from the car (source) Speed of…

Q: An object is placed at a distance of 10.0 cm from a concave mirror of focal length 5.00 cm. Which…

A: Object is at center of curvature. Hence an inverted image will be formed at center of curvature.

Q: In a lake, two boats A and B are leaving Station1 at the same time, Boat A is directed straight to…

A: Solution:-

Q: A waitress shoves a ketchup bottle with mass 0.45 kg to her right along a smooth, level lunch…

A: Given data: The mass of the bottle is m=0.45 kg. The initial speed of bottle is u=2.8 m/s. The…

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.