Answer is on the image with the explanation. I hope that might help you with the answers
Answer:
1. What type of wave is sound?
2.Does sound need a medium to travel through?
3. What are the properties of sound waves?
Explanation:
1. The type of waves sound are is mechanical waves.
2. Sound needs a solid, liquid or gas (material medium) to travel through.
3. I believe they are wavelength, amplitude, frequency, time period and velocity.
I apologize if it is incorrect-
I hope it helps! Have a great day!
Anygays-
a. linear pairs, when added together, the angles will make 180 degrees, or a straight line. In this case No, for when you combine the two angles, it is not a straight line
b. False. Vertical angles make two opposite angles that are congruent
c. True. When added together, angles 1 and 4 make a straight line
d. False. As stated for question b, the two opposite angles must be congruent
hope this helps
Answer:
<h3>10.1m/s</h3>
Explanation:
Using the equation of motion v² = u²+2as where;
v is the final velocity
u is the initial velocity
a is the acceleration due to gravity
s is the height of fall
Given
u = 2.0m/s
s = 5.0m
g = 9.81m/s²
Required
final velocity of the book in m/s
Substitute the given parameters into the formula;
v² = u²+2as
v² = 2²+2(9.81)(5)
v² = 4+98.1
v² = 102.1
v = √102.1
v = 10.1m/s
<em>Hence the final velocity of the book in m/s is 10.1m/s</em>
She is testing independent variable
