Category: Physics

How do trees adapt? They have adapted to life in the rainforest by having their roots in the ground and climbing high into the tree canopy to reach available sunlight. Many lianas start life in the rainforest canopy and send roots down to the ground. The leaves of forest trees have adapted to cope with […]

Does Honduras have an army? The Armed Forces of Honduras (Spanish: Fuerzas Armadas de Honduras), consists of the Honduran Army, Honduran Navy and Honduran Air Force. How strong is the Honduran army? For 2021, Honduras is ranked 114 of 140 out of the countries considered for the annual GFP review. It holds a PwrIndx* score […]

Why does insolation decrease with latitude? The solar zenith angle (z) is related to the latitude of the hillslope and solar declination, which is a measure of how high the Sun may be in the sky at a given time of day and season. As the Sun becomes higher in the sky, the sunlight hits […]

How long do black holes live for? If black holes evaporate under Hawking radiation, a solar mass black hole will evaporate over 1064 years which is vastly longer than the age of the universe. A supermassive black hole with a mass of 1011 (100 billion) M ☉ will evaporate in around 2×10100 years. Are black […]

How maps are useful in our daily life? Maps are an important part of our everyday lives. We use them for driving directions, to look up restaurants or stores and parse election data. We can even use smartphone maps to locate friends when they’re out on the town. What is the importance of Colour in […]

What is the angle of incidence and angle of refraction? When a ray of light is incident at normal incidence, (at right angles), to the surface between two optical materials, the ray travels in a straight line. When the ray is incident at any other angle, the ray changes direction as it refracts. What is […]

Why does Charlotte marry Collins? Charlotte marries Mr. Collins because he has a stable income and offers her the opportunity to have a home of her own. She does not love him, but she doesn’t believe that love is essential for a successful marriage. When did Mr Collins propose to Charlotte? By Jane Austen Elizabeth […]

What is line how many types of lines are there? five What are the styles of lines? The 5 Types of Lines Curvy Lines. Curvy lines are fun – they twist and turn and curl in lots of different directions! Vertical Lines. Vertical Lines go up and down. They can be straight or could zig-zag […]

What is the value of absolute pressure? Absolute Pressure Defined A full vacuum has an absolute pressure reading of 0 PSIA and average barometric pressure at sea level is ~14.7 PSIA. When measuring gauge pressure, current atmospheric pressure is the baseline and is therefore read as 0 PSIG. What does absolute pressure depend on? Pressure […]

What is gravity in simple words? The answer is gravity: an invisible force that pulls objects toward each other. Earth’s gravity is what keeps you on the ground and what makes things fall. An animation of gravity at work. Albert Einstein described gravity as a curve in space that wraps around an object—such as a […]