3 years ago

Why electrons carry a net energy but not a net a current in case of thermal conduction

1 answer:

7 0

Because in thermal conduction there is no flow of extra electrons through conductor incase the vibration of neighbour electron,atom Helps to transfer heat energy

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How to find yield strength of a load vs deflection?

liraira [26]

Σ/ε
σ = F/A
ε = ΔL/L
F = force
A = area
L = lenght
ΔL = |old lenght - new lenght|

6 0

3 years ago

A skier of mass 103 kg comes down a slopeof constant angle 32◦with the horizontal.What is the force on the skier parallel tothe

LuckyWell [14K]

Answer:

534.9 N

Explanation:

The skier weight is his mass times gravitational acceleration g

W = mg = 103 * 9.8 = 1009.4 N

This weight can be divided into 2 components, one perpendicular and the other parallel to the 32-degree slope. The parallel component would equal to

$Wsin(32^0) = 1009.4sin(32^0) = 534.9 N$

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3 years ago

An object with a mass of 70 kilograms is supported at a height of 8 meters above the ground, what's the potential energy of the

Olegator [25]

Answer:

5488 Joules

Explanation:

Use the formula for the potential energy:

$E_p = mgh = 70kg\cdot 9.8\frac{m}{s^2}\cdot 8m = 5488 J$

6 0

3 years ago

a rectangular tank measures 12.5 metres long 10.0 wide and 2.0 metre high calculate the mass of the water in the tank when it is

Tom [10]

Answer:

250000kg

Explanation:

Mass =density * volume

Density=1000kg/m³

Volume=l*w*h

12.5*10.0*2.0=250m³

Mass=1000 *250

=250000kg

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3 years ago

What is a benfit of useing a restince band in workouts?

andrey2020 [161]

Answer:

It makes it more difficult to move, making it stretch and exercise your muscles better becuse there is a resistant force to overcome.

Explanation:

-Sky :3

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2 years ago

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