1. Temperature is a measure of total kinetic
energy of the particles in a system.
2. If one coulomb of charge is flowing in one
minute, it is called 'ampere
3. Amount of substance gives the number of
particles present in a substance.
4. Intensity of light coming from a candle is
approximately equal to one 'candela
5. Quartz clocks are used in GPS devices.
Answers
Explanation:
1. true
2. false
3. true
4.true
5. false
Answer:
Temperature measures the average kinetic energy of the particles in a substance. Thermal energy measures the total kinetic energy of the particles in a substance. The greater the motion of particles, the higher a substance's temperature and thermal energy.
2.One coulomb is nearly equal to 6×1018 6 × 10 18 electrons. SI unit of electric current is ampere (A). Ampere is the flow of electric charges through a surface at the rate of one coulomb per second. This means if 1 coulomb of electric charge flows through a cross section for 1 second, it would be equal to 1 ampere.
3.In a truly atomistic view, the amount of substance is simply the number of particles that constitute the substance. The particles or entities may be molecules, atoms, ions, electrons, or other, depending on the context. The value of the Avogadro constant NA has been defined as 6.02214076×1023 mol−1.
4.A common candle emits light with a luminous intensity of roughly 1 cd. If emission in some directions is blocked by an opaque barrier, the emission would still be approximately one candela in the directions that are not obscured.
5. yes it is true that Quartz clock are used in gps devices. Every satellite contains an expensive atomic clock, but the receiver itself uses an ordinary quartz clock, which it constantly resets. In a nutshell, the receiver looks at incoming signals from four or more satellites and gauges its own inaccuracy.