A. Pabsars
B. White dwarfs
C. Atomic Clocks
D. None of these
PSR J0108-1431 is the closest known ______________ to Earth?
A. Black hole
B. Red giant
C. Quasar
D. Pulsar
A. Calcium
B. Chondroitin sulfate
C. Boron
D. phosphate
A. 746 mm
B. 760 mm
C. 820 mm
D. None of these
A. Vitamin C
B. vitamin D
C. vitamin K
D. None of these
B-complex vitamins and vitamin C are water-soluble vitamins that are not stored in the body and must be replaced each day. These vitamins are easily destroyed or washed out during food storage and preparation.
The fat-soluble vitamins — A, D, E, and K — dissolve in fat and can be stored in your body. The water-soluble vitamins — C and the B-complex vitamins (such as vitamins B6, B12, niacin, riboflavin, and folate) — need to dissolve in water before your body can absorb them.
A. Convection
B. Radiation
C. Conduction
D. Electromagnetic Induction
A device which converts chemical energy into electrical energy is called __________?
A. motor
B. generator
C. moving-coil meter
D. battery
Batteries are devices that convert stored chemical energy into useful electrical energy. It consists of a number of voltaic cells connected in series by a conductive electrolyte containing anions and cations. A battery may be thought of as a clever variant of a standard exothermic chemical reactor that yields chemical products with lower energy content than the chemical reactants.
Also read about A device that converts mechanical energy into electric energy is called_______?