A rectangular solid made of carbon has sides of lengths 1.0 cm, 2.0 cm, and 4.0 cm, lying along the x, y, and z axes, respective
1 answer:
Answer:
The correct answer is in the x-axis direction, where the distance travelled is 1.0 cm and the surface is 8 .
Explanation:
The electrical resistance is lower when the contact surface is larger and the length is shorter.
An electrical resistance is an opposition to the flow of electric current through a conductor. For a given conductor, the resistance is given by the following formula:
R = ρ *
Where:
R: Electrical resistance.
ρ: Resistivity of the material.
l: Length.
S: Surface of the conductor.
Thus, the direction in which the electrical resistance is lower is when the distance is minimum and the area is greater.
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Answer:
90,000 J
Explanation:
Kinetic energy can be found using the following formula.
where <em>m </em>is the mass in kilograms and <em>v</em> is the velocity in m/s.
We know the object has a mass of 50 kilograms. We also know it is a traveling at a rate of 60 m/s. Velocity is the speed of something, so the velocity of the object is 60 m/s.
<em>m</em>=50
<em>v</em>=60
Substitute these values into the formula.
First, evaluate the exponent: 60^2. 60^2 is the same as multiplying 60, 2 times.
60^2=60*60=3,600
Multiply 50 and 3,600
Multiply 1/2 and 3,600, or divide 3,600 by 2.
Add appropriate units. Kinetic energy uses Joules, or J.
The kinetic energy of the object is 90,000 Joules