What is the vertical acceleration of a rock thrown straight upward on the way up? Answer: The acceleration of a rock thrown straight upward on the way up, at the top of its flight and on the way down is called gravity, and it’s denoted by the letter g. What is the acceleration of a […]
How are harmonics calculated?
How are harmonics calculated? Harmonics are voltages or currents that operate at a frequency that is an integer (whole-number) multiple of the fundamental frequency. So given a 50Hz fundamental waveform, this means a 2nd harmonic frequency would be 100Hz (2 x 50Hz), a 3rd harmonic would be 150Hz (3 x 50Hz), a 5th at 250Hz, […]
How long is a 40 Hz wavelength?
Why did the nucleus stay together when we added two neutrons?
Why did the nucleus stay together when we added two neutrons? The nucleus of an atom is held together by the strong nuclear force that binds together protons and neutrons. Although the strong nuclear force is the strongest of the four fundamental forces, it acts only over very short – typically nuclear – distances. It […]
What units does a Geiger counter measure?
What units does a Geiger counter measure? Ambient radiation levels are reported in Gray per hour (Gy/h) or Sievert per hour (Sv/h), which are the international units. In the United States, we use Roentgen per hour (R/h) or rem per hour (rem/h). Instruments called pressurized ionization chambers are best suited for measuring ambient radiation levels. […]
What is the difference between Gupta and Mauryan Empires?
What is the difference between Gupta and Mauryan Empires? The Maurya empire was governed by powerful emperors who established an elaborate bureaucracy, levied extensive taxes and exercised direct control over the villages within its territories. Under the Gupta, villages were governed by their own headmen and the central government did not seek to impose direct […]
What does it mean when velocity is constant?
What does it mean when velocity is constant? Constant velocity means that the object in motion is moving in a straight line at a constant speed. The velocity can be positive or negative, and is indicated by the sign of our slope. This tells us in which direction the object moves. What does a positive […]
What happens to coefficient of friction when weight is doubled?
What happens to coefficient of friction when weight is doubled? What happens to the coefficient of friction, when weight of the body is doubled? Coefficient of Friction is defined as the ratio of the max resisting force parallel to the contact surface to the forces pressing them together. Therefore, by doubling the weight, the coefficient […]
How do we use optics in everyday life?
How do we use optics in everyday life? Here are 9 ways optics are used in daily life: Remote Controls & TVs. You sit down after a long day of work, ready to catch up on your favorite show on Netflix. Cameras. 5G. Barcode Scanners. Traffic Signals. Surveillance Cameras. LED Light Bulbs. Surgical Machines. What […]
What is the distance between an object and a reference point called?
What is the distance between an object and a reference point called? Displacement What is equal to in math? The equal sign in mathematics describes equality between the values, equations, or expressions written on both sides. The symbol for equal to is two small horizontal lines placed parallelly. We place the ‘equal to’ sign is […]