What is frame of reference and its types? There are two types of observational reference frame: inertial and non-inertial. An inertial frame of reference is defined as one in which all laws of physics take on their simplest form. In special relativity these frames are related by Lorentz transformations, which are parametrized by rapidity. What […]
How can you reduce unwanted energy transfers in a machine with moving touching components?
How can you reduce unwanted energy transfers in a machine with moving touching components? Mechanical devices can be made more efficient through lubrication to reduce the friction between moving parts of a machine and increase the amount of useful energy transferred. Can you put too much insulation in your attic? It is possible to over-insulate […]
What are the three causes of mutation?
What are the three causes of mutation? Mutations are caused by environmental factors known as mutagens. Types of mutagens include radiation, chemicals, and infectious agents. Mutations may be spontaneous in nature. How many days is a mutation? The process takes 15 days to a month after which mutation certificate is issued. The local civic body […]
Is it good to Flex?
Is it good to Flex? It can also be a way to build strength. Muscle flexing is more accurately known as muscle contraction, because when you flex your muscles, you’re creating tension that’s temporarily making the muscle fibers smaller or contracted. This tension is one example of how flexing your muscles can help make them […]
What are disadvantages of DC?
What are disadvantages of DC? Disadvantages of DC Transmission: Due to commutation problem, electric power can’t be produced at High (DC) Voltage. In High Voltage transmission, we cant step-up the level of DC Voltage (As Transformer won’t work on DC). There is a limitation of DC switches and circuit breakers (and they are costly too). […]
Do projectiles have a predictable path?
Do projectiles have a predictable path? Projectiles do not follow a predictable path. Where will the ball have the smallest speed? The speed is smallest at the highest point of its flight path because the y- component of the velocity is zero. At what point of the projectile path the speed is i minimum and […]
Do transverse waves need a medium?
Do transverse waves need a medium? Transverse waves require a relatively rigid medium in order to transmit their energy. What are transverse waves give examples too? Transverse wave, motion in which all points on a wave oscillate along paths at right angles to the direction of the wave’s advance. Surface ripples on water, seismic S […]
What does a 12 volt resistor do?
What does a 12 volt resistor do? Provide the proper voltage. Resistors ensure components receive the proper voltage by creating a voltage drop, and they can protect a component from voltage spikes. Each component in an electrical circuit, like a light or a switch, requires a specific voltage. How many volts should a coil have? […]
What is the center of an atom is called?
What is the center of an atom is called? The nucleus (center) of the atom contains the protons (positively charged) and the neutrons (no charge). The outermost regions of the atom are called electron shells and contain the electrons (negatively charged). Atoms have different properties based on the arrangement and number of their basic particles. […]
Who first discovered fission?
Who first discovered fission? Lise Meitner Who found nuclear? Enrico Fermi What is the first nuclear power plant in the world? Obninsk Nuclear Power Plant How safe is nuclear? The evidence over six decades shows that nuclear power is a safe means of generating electricity. The risk of accidents in nuclear power plants is low […]