How do astronomers detect dark matter? Galaxy clusters are particularly important for dark matter studies since their masses can be estimated in three independent ways: From the scatter in radial velocities of the galaxies within clusters. From X-rays emitted by hot gas in the clusters. Is dark matter invisible? Scientists have not yet observed dark […]
What are the dimensions of the quantity?
What are the dimensions of the quantity? The dimension of a physical quantity is defined as the powers to which the fundamental quantities are raised in order to represent that quantity. The seven fundamental quantities are enclosed in square brackets [ ] to represent its dimensions. What are the dimensions of the quantity 1? The […]
What kind of variable is behavior?
What kind of variable is behavior? An ordinal variable is a categorical variable for which the possible categories can be placed in a specific order or in some ‘natural’ way. In Table 2, the variable ‘behaviour’ is ordinal because the category ‘Excellent’ is better than the category ‘Very good’, etc. Which of the following is […]
Which location most likely has the warmest climate?
Which location most likely has the warmest climate? The area near the equator will be the warmest climate region as the sunlight comes directly to this region. Option B. The area 60° south of the equator will be the region near the tropic of Capricorn, where the temperature will be less. Why is East Coast […]
What type of fusion occurs in a high mass star near the end stages of its life cycle?
How does a fan convert energy?
How does a fan convert energy? (The fan’s blades move air around the room. The kinetic energy of the moving blades does work in moving air through the fan blades.) The fan converts electric energy into kinetic energy that does work, and it converts some electric energy into heat.) What does a fan do to […]
How then does water move up the height of a 40 m tall tree?
How then does water move up the height of a 40 m tall tree? Water is move up the tree by using cohesion-tension, transpiration pull and the root pressure, technical they all happen at the same time; However, the cohesion-tension get it up to the 10m mark and the transpiration pull and the root pressure […]
What was the best ship ever built?
What was the best ship ever built? Here in this article we present you the top 10 historic ships all time. U.S.S. Monitor and C.S.S. Virginia (aka Merrimack) U.S.S. Constitution. Battleship U.S.S. Missouri. HMS Victory. Battleship U.S.S. Maine. German Battleship Bismarck. Battleship U.S.S. Arizona. British Luxury Liner RMS Titanic. What does SS stand for on […]
How many moles of Al2O3 are formed when .78 mol O2 reacts with aluminum?
Is asexual reproduction better or sexual?
Is asexual reproduction better or sexual? Sexual mode of reproduction is considered to be better than the asexual mode of reproduction. This is because, in asexual reproduction, the only single parent gives rise to another offspring which is exactly similar to the parent as it passes its genetic material to the offspring. Why is sexual […]