<span><u>Answer
</u>
Heat is a form of energy while temperature is the measure or degree of coldness or hotness of a substance, place or something.
The similarities between heat and temperature are:
1. Heat causes the temperatures to raise. This means that it is the heat energy that causes temperatures to change.
2. Both heat and temperatures can be measured by specific units. Heat is measured in joules while temperature is measured in kelvin.
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KE=1/2MV2
So 1/2(650)(20)squared
1/2(650)(400)
200(650)
130,000 J
Answer:

Explanation:
Under this condition, . In order to suspend the wire, this magnetic force would have to be equal in magnitude to the gravitational force exerted by Earth on the wire the maximum force at angle
F=ILxB
Now to the suspend the wire so use the maximum force and solve to the current knowing the magnetic field of the earth
∑Fy=0


Solve to I current



I suggest do an toher act is really risk that current for an act
Answer:
0.9 N
Explanation:
The electric force acting on a charge is given by:

where
q is the magnitude of the charge
E is the strength of the electric field
In this problem, we have
is the charge
is the strength of the electric field
Substituting into the equation, we find

1. D, constant
Force must be in the direction of the velocity to change speed.
2. B. to the center of the curvature
This allows the vehicle to complete the turn.