Answer:
wave length is 1.2m
Explanation:
since formula of wave length is v/f
v(speed of sound in air at stp is 300ms^-1)
f(frequency 250hertz)
then wave length is 300÷250 which give 1.2m
Powdered sugar contains corn starch
Hello! Now, in order to figure this out, it is better to use a Cartesian plane system. Now, this line has a velocity of 3.2m/s and it is at an angle of 25 degrees above the horizontal. If you draw that on the Cartesian plane system, it is a diagonal line. In order find the vertical component of its velocity. Think of it as a triangle, where the velocity you are given is the hypotenuse. Since we are only given the velocity and the angle, we can use trigonometry to figure out the vertical component, in this case y-component of the velocity. You can take the velocity and multiply that by the sin of 25 degrees in order to get you the vertical component. Which will be 1.4m/s
Answer:
The number of minutes in an hour - constant
Systolic blood pressure - variable
Freezing temperature of water in degrees Kelvin - constant
Ratings of daily anxiety - variable
Explanation:
A variable speaks of something that change while a constant is something that doesn't change.
The number of minutes in an hour is always constant which is 60.
Systolic blood pressure refers to the amount of pressure in your arteries during the contraction of your heart muscle and this changes base on the work done by the heart thus will be a variable.
Freezing temperature of water in degrees kelvin is always constant and it is 273.2 K.
Ratings of daily anxiety will be a variable because daily anxiety differs for different challenges of life.