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Zielflug [23.3K]
3 years ago
14

Why do electrical devices have resistance​

Physics
1 answer:
Kamila [148]3 years ago
8 0
As electrons move through the conductor, some collide with atoms, other electrons, or impurities in the metal.
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2. You decide to lift a 25 kg box to a height of 3 meters. How much work will you do while moving
nadya68 [22]

Answer:

W = 735.75[J]

Explanation:

Work is defined as the product of force by distance. Therefore we can use the following equation.

W=F*d

where:

W = work [J] (units of Joules)

F = force [N] (units of Newtons)

d = distance = 3 [m]

But first, we must determine the force that is equal to the product of mass by gravity (weight of the body).

F=m*g\\F=25*9.81\\F=245.25[N]

W=F*d\\W=245.25*3\\W=735.75[J]

4 0
3 years ago
Define electric potential energy
Verizon [17]
Electric potential energy, or Electrostatic potential energy, is a potential energy that results from conservative Coulomb forces and is associated with the configuration of a particular set of point charges within a defined system.
3 0
3 years ago
Read 2 more answers
in an experiment performed in a space station a force of 6 n causes an object to have an acceleration equal to 4 m / S2 II what
spayn [35]

F = m A

m = F / A

m = 6N / 4m/s^2

m = 1.5 kg

8 0
3 years ago
((THIS IS WORTH 50 POINTS))
e-lub [12.9K]

Answer:

sorry I had find answer from everywhere but can't find

Explanation:

can u can send it with some information please

4 0
2 years ago
Read 2 more answers
If a metal wire is 4m long and a force of 5000n causes it to stretch by 1mm, what is the strain?
barxatty [35]

Answer:

2.5\cdot 10^{-4}

Explanation:

The strain is defined as the ratio of change of dimension of an object under a force:

S=\frac{\Delta L}{L_0}

where

\Delta L is the change in length of the object

L_0 is the original length of the object

In this problem, we have L_0 = 4 m and \Delta L=1 mm=0.001 m, therefore the strain is

S=\frac{\Delta L}{L_0}=\frac{0.001 m}{4 m}=2.5\cdot 10^{-4}


5 0
3 years ago
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