How do you increase the pitch of a sound? When the length of a string is changed, it will vibrate with a different frequency. Shorter strings have higher frequency and therefore higher pitch. When a musician presses her finger on a string, she shortens its length. Does pitch decrease with distance? Sound waves that are […]
How can I learn English in 20 days?
How many liters of air can a balloon hold?
How do you keep foil balloons from deflating?
How do you keep foil balloons from deflating? Spray the balloons with a mist of any hairspray. This interesting technique will help keep the air from escaping the balloons. Once all the balloons have been blown up, you can store them in a large plastic bag until the time for the event. Doing this will […]
What can become Fossilised?
What can become Fossilised? A fossil can preserve an entire organism or just part of one. Bones, shells, feathers, and leaves can all become fossils. Fossils can be very large or very small. Microfossils are only visible with a microscope. What happen to the water after you put the ash? When you add water the […]
Which of the following is not a source of genetic variation?
Which of the following is not a source of genetic variation? Answer and Explanation: Mitosis of fertilized eggs is not a source of genetic variation. Mitosis will always produce genetically identical daughter cells to the parental cell. Random fertilization, independent assortment, and crossing over in meiosis will all increase genetic variation. Why crossing over is […]
Is the variable qualitative or quantitative favorite color?
Is the variable qualitative or quantitative favorite color? A. The Variable Is Qualitative Because Color Is Found By Measuring Or Counting. Is distance quantitative or qualitative? Most data can be put into two groups: qualitative (hair color, ethnic groups and many other attributes of population) and quantitative (distance traveled to college, number of children in […]
What can be the advantage of a blue filter before the condenser lens in a light microscope?
What can be the advantage of a blue filter before the condenser lens in a light microscope? A blue filter placed over the lamp absorbs the red parts of the spectrum and gives the picture a cooler, more neutral color. Many digital microscope cameras already have an integrated blue filter over the sensor of the […]
What are the major threats to natural resources?
What are the major threats to natural resources? Threats Bycatch. Deforestation and Forest Degradation. Effects of Climate Change. Illegal Fishing. Illegal Wildlife Trade. Infrastructure. Oil and Gas Development. Overfishing. What are the two main causes of over exploitation of natural resources? Causes of Depletion of Natural Resources Overpopulation. The total global population is more than […]
What is gravity assist speed?
What is gravity assist speed? In orbital mechanics and aerospace engineering, a gravitational slingshot, gravity assist maneuver, or swing-by is the use of the relative movement (e.g. orbit around the Sun) and gravity of a planet or other astronomical object to alter the path and speed of a spacecraft, typically to save propellant and reduce […]