The coefficient of friction between the sled and the snow is 0.119.
To find the answer, we need to know about the friction.
<h3>How to find the coefficient of friction between the sled and the snow?</h3>
- Whenever a body moves over the surface of another body, a force come into play, which acts parallel to the surface of contact and oppose the relative motion. This opposing force is called friction.
- To solve the problem, we have to draw the free body diagram of the given system.
- We have given with the following values,
Here, acceleration will be equal to zero, because the velocity is given as constant.
- Thus, from the diagram, we can write the balancing equations as follows,
- Substituting N in f and f in the equation of ma, then we get,
- Substituting values, we get the coefficient of friction as,
Thus, we can conclude that, the coefficient of friction between the sled and the snow is 0.119.
Learn more about the friction here:
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<span>Scientists have obtained most of this information from natural geological activity.
</span>S-waves and p-waves are seismic waves- the waves of energy that travel through the Earth as a result of an earthquake .Both P- and S-waves travel easily through solids, but S-waves cannot pass through liquids, and they cannot pass through the outer core. Scientists know that Earth’s outer core is liquid because s-waves are not able to pass through it.<span> When an earthquake occurs there is a “shadow zone” on the opposite side of the earth where no s-waves arrive.
</span>So, one of the reasons <span>why scientists believe the outer core is liquid is the s-wave shadow zone.</span>
<h3><u>Answer;</u></h3>
Rotation
<em><u>Rotation</u></em> is the movement of the earth that is responsible for day and night.
<h3><u>Explanation;</u></h3>
- <em><u>Rotation is the movement of the earth in which the earth rotates around its own axis.</u></em> The earth rotates from west to east, that is eastward, which happens to be anticlockwise or counter clockwise.
- <em><u>One side of the Earth faces the sun</u></em> and thus is bathed in light and heat, thus called day time, while <em><u>the other faces away into space, </u></em>that experiences cold and dark and thus known as night time.
- <em><u>The change between day and night is caused by the rotation of the Earth. One day is determined by the time the earth takes to rotate on its own axis and includes both day time and night time</u></em>
When an atom of an element is broken down as a result of application of heat, the atom will be turn into an atom of another element. In the scenario given in the question above, the plutonium obtained is not the same as the uranium atom that was broken down, therefore, it will have properties that are completely different from that of the uranium atom.
Answer:
( 24.19 / 10.06 )
Explanation:
starting speed = 20m/s
direction = 41 degrees from due east
after 20 seconds
bus speed = 45m/s
direction = 56 degrees from due east
calculate the angle of the vector that represents the change in the velocity of the bus
change in velocity : ΔV = Vf - Vi
Vf = Vf ( cos βi + sinβj )
= 45m/s ( cos 56 i + sin56 j )
= 25.16 i + 37.31 j
Vi = Vi ( cos ∝ i + sin ∝ j )
= 20 m/s ( cos 41 i + sin 41 i )
= 15.10 i + 13.12j
Hence the change in velocity ΔV ( Vf - Vi )
= 10.06 i + 24.19 j
the angle in degrees ( ∅ ) = ( 24.19 / 10.06 )