A certain lightbulb has a tungsten filament with a resistance of 21.0 when cold and 142 when hot. Assume the resistivity of tungsten varies linearly with temperature even over the large temperature...

A certain lightbulb has a tungsten filament with a resistance of 21.0 when cold and 142 when hot. Assume the resistivity of tungsten varies linearly with temperature even over the large temperature...

An aluminum wire having a cross-sectional area of 4.00 ✕ 10-6 m2 carries a current of 6.00 A. Find the drift speed of the electrons in the wire. The density of aluminum is 2.70 g/cm3. Assume each...

THIS IS THE FULL QUESTION. The length of nylon rope from which a mountain climber is suspended has an effective force constant of 1.40 × 104 N/m. (a)What is the frequency at which he bounces,...

This is the full question. If you shake the end of a stretched spring up and down with a frequency f, you can produce a sinusoidal, transverse wave propagating down the spring. Does the wave number...

How did it come to mind that, it is in blackhole ? What about its properties?

A U-shaped tube , one of its branches is double the other in area , the length of each branch is 66 cm. ,if it is filled with water to its half , then oil is poured in the wide branch. Calculate the...

A U-shaped tube , one of its branches is double the other in area , the length of each branch is 66 cm. ,if it is filled with water to its half , then oil is poured in the wide branch. Calculate the...

What would the force on a proton be at (0,0)m be if 6 electrons were arranged in a regular hexagon centred on (0,0)m? I was thinking along the lines of finding the electric field...

High School Physics

Light with wavelength 666 nm shines on a double-slit. The first-order bright spot is formed at an angle of 0.127 degrees from the central bright spot. Find the spacing between the slits.

A sled with a mass of 20 kg slides along a frictionless ice at 4.5 m/s. It then crosses a rough patch of snow that exerts a friction force of 12N. How far does it slide on the snow before coming to...

Eyewitness 1 account :(Vehicle 1) The driver claims to have come to a complete stop before entering the intersection. She stated that the other driver ran the stop sign and caused the...

A very curious student was studying electricity and had An unconventional idea. He envisioned two spheres of Same radius R and with volumetric distributions of charge +ρ and -ρ Respectively,...

How much charge resides on the outer surface of the metal sphere? Express answer in terms of q.

Ux2+Uy2=[n(y)]2 , where n(y)=n0(1+ky). How do I proceed use method of characteristics to solve Eikonal equation when ...

Ive tried every equation an I still cant get the answer

For a spectrograph fed with an f/3.32 beam, and with an f/1.33 camera, what is the magnification factor of the entrance slit at the detector focal plane (larger or smaller)? The question...

I cant get the math right can you give me thees calculations its form my science project and i just don't know enough physics to answer them. Im trying to convert the impact and pressure of giraffe...

physics word problem

a snowball is thrown with an initial velocity of 20 m/s at an angle of 60 degrees with the horizontal. Will it clear the top of the 3-meter taller wall of the snow fort 34m away?

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