We use cookies to give you the best experience possible. By continuing we’ll assume you’re on board with our cookie policy

Physics Online Course Essay

Essay Topic:

Sorry, but copying text is forbidden on this website!

1-How can you demonstrate that water is denser than ice without weighing them? What is the principle involved?

Release an ice cube in water; the ice cube will float. The ice cube will displace some water as it “pushes” the water away. The principle involved is displacement.

2-The density of water is a maximum at 4°C. Why is this property of water important for aquatic life?
The maximum density being attained at  4°C means that even if the water gets colder, the density will decrease.

We will write a custom essay on Physics Online Course specifically for you
for only $16.38 $13.90/page

Order now

Therefore, ice (when it forms) floats instead of sinks. This makes the continuity of aquatic life during winter possible.

3-When two different materials are given the same amount of heat will their temperatures increase by the same amount? Explain with reasons?
No. It depends on the ability of the materials to conduct heat.

4-It is generally observed that it is more difficult to cook food at high altitudes. Explain the possible reason for this?
In higher altitudes, there is lower pressure. This means that water will not boil at 100°C, but at a lower temperature, making your water not as hot as on sea-level, making cooking time longer.

5-What are the variable factors that affect the pitch (frequency) of a vibrating string? How are these factors controlled in a stringed musical instrument such as a violin?
The speed and wavelength of the waves formed by striking an object. A musician controls the frequency through the string’s tension and density, by pressing some of the strings.

6-If you want to see yourself fully in a plane mirror, the mirror needs to be only half your height. Draw a ray diagram showing how this is possible. Explain the diagram and principles you used.

The image in the mirror looks as if the figure is far away, when in fact, it is right in front of the mirror. This is because the light received by the eye traveled in a straight line as if it came from behind the mirror. The mirror is also laterally inverted, meaning the figure’s right will appear as the mirror image’s left.

References

Leigh, J.R. (1988). Temperature measurement and control. USA: Institute of Engineering and    Technology.

Sumich, J.L. and Morrissey J.F. (2004). Introduction to the biology of marine life. Massachusetts: Jones             and Bartlett Publishers.

Pople, S. (1987). Explaining physics. United Kingdom: Oxford University Press.

Dolan, G., Duffy, P. and Percival, A. (1996). Physics. United Kingdom: Heinemann.

How to cite this page

Choose cite format:

Physics Online Course. (2017, Feb 26). Retrieved from https://studymoose.com/physics-online-course-essay

We will write a custom sample essay onPhysics Online Coursespecifically for you

for only $16.38 $13.90/page
Order now

Our customer support team is available Monday-Friday 9am-5pm EST. If you contact us after hours, we'll get back to you in 24 hours or less.

By clicking "Send Message", you agree to our terms of service and privacy policy. We'll occasionally send you account related and promo emails.
No results found for “ image
Try Our service
online

Hi, I am Sara from Studymoose

Hi there, would you like to get such a paper? How about receiving a customized one? Click to learn more https://goo.gl/CYf83b

online

Hi, I am Sara from Studymoose

Hi there, would you like to get such a paper? How about receiving a customized one? Click to learn more https://goo.gl/CYf83b

image

Your Answer is very helpful for Us
Thank you a lot!