Answer:
L = 1.06 m
Explanation:
As per work energy theorem we know that work done by all forces must be equal to change in kinetic energy
so here we will have
now we know that
initial and final speed of the book is zero so initial and final kinetic energy will be zero
here we know that
k = 250 N/m
x = 0.250 m
m = 2.50 kg
now plug in all data in it
now we have
Answer: B. Title 1 is “Transverse Waves,” and Title 2 is “Longitudinal Waves.”
Explanation:
In transverse waves, the particles of the medium oscillate up and down perpendicular to the direction of motion of wave. crests and troughs are formed. Examples of transverse wave: light wave, wave on a string.
An electromagnetic wave is a transverse wave. It can travel in both space as well as medium. It travels with the speed of light in space and slows down in medium.
In longitudinal wave, the particles of the medium oscillate to and fro parallel to the direction of the motion of wave. Example: sound wave
A sound wave is mechanical wave. It requires medium to travel. A sound wave is longitudinal wave. Sound wave travels forward by compression and rarefaction of the medium.
Thus, the title 1 should be transverse wave and title 2 should be longitudinal wave.
Answer:
18.9 <em>N or </em><em>19</em><em> N </em>rounded
Explanation:
m = 0.145 kg
a = 130 m/s^2
F = ma = (0.145 kg)(130 m/s^2) = 18.9 <em>N</em>
Answer:
H₂0_{(s)} + heat → H₂O(l)
Explanation:
An ENDOTHERMIC reaction is a chemical reaction in which heat is absorbed by the reactants. As such the product is usually cooler than the products. In the equation above (the answer), heat is on the reactant side of the equation thus indicating that heat is absorbed by the reactants.
On the other hand, in the first equation heat is on the product side of the equation which is consistent with an Exothermic reaction.
Have a good day♥
1. What does PE stand for? Physical Education
2. Name one common PE exercise? Your choice A knee push up B piano keys