Category: Physics

Do animals eat seeds? A new study finds that large animals eat not only large seeds but small ones too – helping with seed dispersal. If they become extinct, this could have an impact on overall biodiversity in an ecosystem. Scientists have long thought that small animals eat small seeds and large animals eat large […]

Why does magnetic force act from a distance? The force exerted by a magnet is called The push or pull of magnetism can act at a distance, which means that the magnet does not have to touch an object to exert a force on it. When you close the refrigerator, you feel the pull before […]

Do babies need to wear life jackets on boats? Under California law, every child under 13 years of age on a moving recreational vessel of any length must wear a Coast Guard-approved life jacket in serviceable condition and of a type and size appropriate for the conditions and the activity. Does a throwable count as […]

How do you calculate energy requirement? To calculate the energy required to raise the temperature of any given substance, here’s what you require: The mass of the material, m. The temperature change that occurs, ΔT. The specific heat capacity of the material, c (which you can look up). Here is a source of values of […]

What does 3NH4 mean? Explanation: There are 3 Nitrogen atoms and 12 Hydrogen atoms. The numbers 3 and 4 means that there are 3 Nitrogen atoms, and 12 Hydrogen atoms in the chemical formular (3NH4). Is K2SO4 polyatomic? Sulfate is a polyatomic ion. Is K2SO4 soluble or insoluble? K2 SO4 is very soluble in water. […]

Is the stuff inside glow sticks toxic? The ingredients in glow sticks are generally non-toxic, and most cases will not require medical attention. However, if glow stick fluid is swallowed, it may cause an upset stomach and some mouth irritation. Can Glow sticks make you blind? If glow stick liquid is squirted into the eyes, […]

What is tissue level of Organisation in animals? Tissue level of organization: The cells of the animals show divisions in cell activities. The cells which perform the same functions are arranged as tissues. Example: Coelenterates. Organ level of organization: Tissues in a certain group of animals that have the same function are grouped to form […]

Can I see Jupiter with a 70mm telescope? 60mm (2.3in) to 70mm (2.8in) aperture or equivalent With telescopes of this aperture size, you’ll be able to see the moon and her craters, as well as some of the bigger planets. This is Jupiter with a 130mm aperture. Which eyepiece is best for viewing the moon? […]

What is the importance of amendments? It is based on the verb to amend, which means to change for better. Amendments can add, remove, or update parts of these agreements. They are often used when it is better to change the document than to write a new one. What is the purpose of amendments? The […]

Why do we use oscillator? Oscillators convert direct current (DC) from a power supply to an alternating current (AC) signal. They are widely used in many electronic devices ranging from simplest clock generators to digital instruments (like calculators) and complex computers and peripherals etc. What are types of oscillator? Types of Oscillators Armstrong Oscillator. Crystal […]