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dedylja [7]
4 years ago
6

What effects occur when heat energy is added to a system

Physics
1 answer:
Kobotan [32]4 years ago
6 0
It could possibly melt things
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What is the definition for the term density
horrorfan [7]

Density can be defined as the measure of mass of a substance per unit volume.

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3 years ago
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Find the kinetic energy of a 0.1-kilogram toy truck moving at the speed of 1.1 meters per second.
ZanzabumX [31]

Answer:

0.061 J

Explanation:

The kinetic energy of an object is given by

K=\frac{1}{2}mv^2

where

m is the mass of the object

v is its speed

For the toy truck in the problem, we have

m = 0.1 kg is its mass

v = 1.1 m/s is its speed

Putting the numbers into the equation, we find

K=\frac{1}{2}(0.1 kg)(1.1 m/s)^2=0.061 J

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3 years ago
Large electric fields in cell membranes cause ions to move through the cell wall. The field strength in a typical membrane is 1.
jeka57 [31]

Answer:

1.6\cdot 10^{-12}N

Explanation:

The electric force on a charged particle is given by

F=qE

where

q is the charge of the particle

E is the strength of the electric field

In this problem, we have

E=1.0\cdot 10^7 N/C is the electric field strength

q=+e=+1.6\cdot 10^{-19}C is the charge of the calcium ion

Therefore, the electric force exerted on the calcium ion is

F=(1.6\cdot 10^{-19}C)(1.0\cdot 10^7 N/C)=1.6\cdot 10^{-12}N

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3 years ago
What is the torque in ( lbs-ft ) of a man pushing on a wrench with 65 lbs of force 8 unches from the nut / bolt he is trying to
Mademuasel [1]

Explanation:

The torque \tau is given by

\tau=Fd = (65\:\text{lbs})(\frac{8}{12}\:\text{ft}) = 43.3\:\text{lbs-ft}

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4 years ago
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