What are the four properties of water? The main properties of water are its polarity, cohesion, adhesion, surface tension, high specific heat, and evaporative cooling. A water molecule is slightly charged on both ends. What are physical and chemical properties of water? We have seen the physical and chemical properties of water and understood its […]
Which physical quantity among the following remains on change when sound wave is reflected from a plane surface?
Which physical quantity among the following remains on change when sound wave is reflected from a plane surface? frequency Which is the following is the requirement for regular reflection of sound? Sound must come back to the person after 0.1 second. For above condition, the reflecting surface must be at a minimum distance of 17.2m. […]
Which state of water has the lowest density?
Which state of water has the lowest density? When water freezes, water molecules form a crystalline structure maintained by hydrogen bonding. Solid water, or ice, is less dense than liquid water. Ice is less dense than water because the orientation of hydrogen bonds causes molecules to push farther apart, which lowers the density. What type […]
Why is the pulley less than 100% efficient?
Why is the pulley less than 100% efficient? It is important to remember that NO pulley system is 100% efficient. This is due to friction of the ropes against the pulley wheels and the friction of the bearings of the pulley wheels as they rotate. This type of pulley arrangement will always have the same […]
Why does my child struggle with transitions?
Why does my child struggle with transitions? Sensory processing challenges Although sensory processing is not a diagnostic term like ADHD or autism, kids with either disorder-or no disorder-can have sensory processing issues, which can lead to problems with transitions. For kids who are easily over stimulated, the world feels confusing and seems to move too […]
Which gas is the main cause of greenhouse effect?
Which gas is the main cause of greenhouse effect? Carbon Dioxide Why oxygen is not a greenhouse gas? Oxygen and nitrogen are not greenhouse gases, because they are transparent to infrared light. These molecules are invisible because when you stretch one, it doesn’t change the electric field. These are symmetric molecules, made of two identical […]
What are 3 ways sediment can move to a new location?
What are 3 ways sediment can move to a new location? Sediment moves from one place to another through the process of erosion. Erosion is the removal and transportation of rock or soil. Erosion can move sediment through water, ice, or wind. Water can wash sediment, such as gravel or pebbles, down from a creek, […]
What is the fastest kick in soccer?
What is the fastest kick in soccer? Fastest Recorded Shots in Football History Ronny Heberson – 211 km/h. Arjen Robben – 190 km/h. Steven Reid -189km/h. Ronald Koeman – 188 km/h. David Hirst – 183 km/h. David Beckham – 158 km/h. Ritchie Humphreys – 154 km/h. Anthony Yeboah – 154 km/h. Who has the fastest […]
At what point the velocity of the projectile is maximum and minimum during its flight?
At what point the velocity of the projectile is maximum and minimum during its flight? Answer. In a Trajectory the projectile would have Minimum velocity at Trajectory point ( At the maximum height ) . & Possess Maximum velocity at initial projection point (due to initial acceleration) & at the point when projectile hits the […]