Answer:
The concept of conservation of momentum is applied in the particular case of collisions.
The general equation ig given by,
Where,
The crash occurs at an intersection so we must separate the two speeds by their respective vector: x, y.
In the case of the X axis, we have that the body has a speed = 0, this because it is not the direction in which it travels, therefore
The same analysis must be given for the particular case in the Y direction, where the mass body does not act with its velocity here, therefore:
We have the two components of a velocity vector given by
Get the magnitude,
With a direction given by
Become more positive instead of negative
The heat transferred by conduction per hour if temperature difference between the inner body and the skin is ∆ = 2°C is 18 Joule/ hr.
<h3>What is heat conduction?</h3>
Heat conduction is the method of transfer of heat by the direct contact of the two or more solid bodies.
Given is the thickness of tissue x = 3cm =-0.03m, Area of conduction A = 1.5 m², Change in temperature of skin ΔT =2°C, and coefficient of thermal for tissue without blood is k = 18 × 10⁻² Cal /m-hr- °C
The conduction heat rate in hr is
Q =kAΔT /x
Q =18 × 10⁻² x 1.5 x 2 /0.03
Q =18 Joule / hr
Thus, the heat transferred by conduction per hour, if temperature difference between the inner body and the skin is ∆ = 2°C is 18 Joule/ hr.
Learn more about conduction.
brainly.com/question/12136944
#SPJ1
Answer:
If the distance is decreased by 4 times, the force of gravity between the two bodies is one-eighth as weak as before.
Explanation:
The force of gravity between two bodies depends on the mass and distance. But we will focus on distance since that's what the question asks. Therefore, the force of gravity increases as distance between the bodies decreases.