When galaxies are moving away from us what light color do we see? Visible light is a spectrum of colors, which is clear to anyone who has looked at a rainbow. When an object moves away from us, the light is shifted to the red end of the spectrum, as its wavelengths get longer. If […]
What are types of damped oscillation?
What are types of damped oscillation? The diagram shown on the right indicates three types of damped harmonic motion. Critically damped: The system returns to equilibrium as quickly as possible without oscillating. Underdamped: The system oscillates (at reduced frequency compared to the undamped case) with the amplitude gradually decreasing to zero. What is positive damping? […]
Why does black make me look thinner?
Why does black make me look thinner? This illusion could explain why we think black is more flattering than white; black shapes appear thinner than white shapes, possibly because the contours of black objects have more definition. A lighter color object will have lines, shapes, and perhaps partitions on it that are very visible to […]
Why soft iron is used for making the core of an electromagnet?
What are the reasons of non-sampling errors?
What are the reasons of non-sampling errors? Some of the major reasons that lead to the non-sampling errors are: Inadequate data specification or data being inconsistent with the objective of survey or census. Inadequate methods of data collection. Duplication of a subject in the survey. Lack of trained investigators. Lack of supervision of primary staff. […]
Do you weigh more on a full moon?
How can I represent relationships between two variables?
How can I represent relationships between two variables? Correlation Correlation analysis seeks to identify (by a single number) the degree to which there is a (linear) relation between the numbers in sets of data pairs. Regression analysis is used to determine if a relationship exists between two variables. 1)Generation of the regression line and equation […]
What is the biggest gland of the endocrine system?
What is the biggest gland of the endocrine system? Your pancreas (say: PAN-kree-us) is your largest endocrine gland and it’s found in your belly. The pancreas makes several hormones, including insulin (say: IN-suh-lin), which helps glucose (say: GLOO-kose), the sugar that’s in your blood, enter the cells of your body. What is the most common […]
How many universes are there in a multiverse?
How many universes are there in a multiverse? in up to 11 dimensions, featuring wonders beyond our wildest imagination. And the leading version of string theory predicts a multiverse made of up to 10 to the 500 universes. Does up and down exist in space? There is an up and down in space. “Down” is […]
How does life on earth depends on the process of photosynthesis?
How does life on earth depends on the process of photosynthesis? Most life on Earth depends on photosynthesis. The process is carried out by plants, algae, and some types of bacteria, which capture energy from sunlight to produce oxygen (O2) and chemical energy stored in glucose (a sugar). What is the important of photosynthesis? It’s […]