What is the difference between a desert and a savanna? savanna is tropical grassland with widely scattered trees or clumps of trees. A Desert is a biomein which the lack of precipitation limits plants growth; deserts are found in both temperate and tropical regions. What are the three types of prairies? Three types of prairie […]
Which direction does a freely suspended magnet point to?
Which direction does a freely suspended magnet point to? A freely suspended magnet always rests in the north-south direction because the magnetic south pole of the earth lies in the geographic north direction and the magnetic north pole of the earth lies in the geographical south direction. Why does a freely suspended magnet? A freely […]
How fast do hockey players skate mph?
What is electric field and its SI unit?
What is electric field and its SI unit? Electric fields and magnetic fields are both manifestations of the electromagnetic force, one of the four fundamental forces (or interactions) of nature. The derived SI units for the electric field are volts per meter (V/m), exactly equivalent to newtons per coulomb (N/C). What is SI unit of […]
Is bamboo stronger than oak?
Is bamboo stronger than oak? In general, bamboo falls at about 1,200 to 1,400 on the Janka Hardness Scale, which means it’s a little harder than oak and ash. Some manufacturers claim the product is 12 percent harder than North American maple, but that’s hard to say. What is the strongest wood on earth? lignum […]
What is the lowland between hills or mountains called?
What is the lowland between hills or mountains called? A valley is a lower part in the land, between two higher parts which might be hills or mountains. Valleys often start as a downward fold between two upward folds in the surface of the Earth, and sometimes as a rift valley. What’s the difference between […]
What is the relation between force and mass?
What is limitation of model?
What is limitation of model? Models are used to simulate reality and make predictions. The major limitation of models is that they are ‘idealizations’ or ‘simplification’ of reality and thus cannot possibly replace reality. A number of assumptions are made during modeling and this causes differences between model and reality. What are some model limitations? […]
What is true for living organism?
What is true for living organism? All living things are made of cells, use energy, respond to stimuli, grow and reproduce, and maintain homeostasis. All living things consist of one or more cells. All life processes require energy, so all living things need energy. All living things can sense and respond to stimuli in their […]
How does a human presence sensor work?
How does a human presence sensor work? Sensors Powering Human Presence Detection Ambient light sensors: As the name suggests, these sensors detect light in the environment. They can measure the light reflecting from an approaching user to detect human presence from a distance. How does a presence sensor work? Presence sensors/motion sensors actually detect the […]