Category: Physics

What is the net force of a rock falling at constant terminal velocity? Objects falling through a fluid eventually reach terminal velocity . At terminal velocity, the object moves at a steady speed in a constant direction because the resultant force acting on it is zero. Why does a parachutist does not fall with constant […]

Is N bigger than 2 N? n! eventually grows faster than an exponential with a constant base (2^n and e^n), but n^n grows faster than n! since the base grows as n increases. Every term after the first one in n^n is larger, so n^n will grow faster. Does N 2 grow faster than 2 […]

Why is cohesion in water important? The cohesion of water molecules helps plants take up water at their roots. Cohesion also contributes to water’s high boiling point, which helps animals regulate body temperature. How do you use the word cohesive? Cohesive in a Sentence ? To make perfect pie dough, you must mix the ingredients […]

What are the different types of electoral system? The electoral systems currently in use in representative democracies can be divided into two basic kinds: majoritarian systems and proportional representation systems (often referred to as PR). In majoritarian electoral systems, winning candidates are those having attracted the most votes in a given electoral district. What are […]

What has an atomic number of 36? The Elements, sorted by Atomic Number Atomic Number Symbol Name 35 Br Bromine 36 Kr Krypton 37 Rb Rubidium 38 Sr Strontium Is krypton a real element? Krypton (Kr), chemical element, a rare gas of Group 18 (noble gases) of the periodic table, which forms relatively few chemical […]

What is the difference between speed and power in PE? Power is the ability to exert as much force as possible in the shortest amount of time. To put it simply, speed + strength = power. When it comes to power, you won’t be able to lift as much weight as you would if you […]

What are the similarities between mitochondria and chloroplast? Both the chloroplast and the mitochondrion are organelles found in the cells of plants, but only mitochondria are found in animal cells. The function of chloroplasts and mitochondria is to generate energy for the cells in which they live. The structure of both organelle types includes an […]

What happens when switch is closed in RC circuit? When the switch is closed the time begins at t = 0 and current begins to flow into the capacitor via the resistor. The current now flowing around the circuit is called the Charging Current and is found by using Ohms law as: i = Vs/R. […]

What primary advantage if any does a ball bearing have over a roller bearing? As a general rule, ball bearings are used at higher speeds and lighter loads than are roller bearings. Roller bearings perform better under shock and impact loading. What are similarities and differences between a plain bearing and a roller bearing? Rollers […]

What are two most abundant elements in magma? Being that oxygen and silicon are the most abundant elements in magma, geologists define magma types in terms of their silica content, expressed as SiO2. These differences in chemical composition are directly related to differences in gas content, temperature, and viscosity. What is magma very short answer? […]