Answer:
Halley's comet will next appear in the night sky in the year 2062. It orbits the sun every 75-76 years, so this is the time between appearances.
Answer:
Metal is cold because it is a good conductor. A conductor carries heat away from and object. Heat flows from your hand into the metal and then is conducted rapidly away into the bulk of the metal, leaving the metal surface and your skin surface relatively cool.
Explanation:
You are welcome.
Answer:
<em>Angular displacement=68.25 rad</em>
Explanation:
<u>Circular Motion</u>
If the angular speed varies from ωo to ωf in a time t, then the angular acceleration is given by:
The angular displacement is given by:
The wheel decelerates from ωo=13.5 rad/s to ωf=6 rad/s in t=7 s, thus:
Thus, the angular displacement is:
Angular displacement=68.25 rad
Explanation:
acceleration is 2 m/s^2
v-u/t
distance travelled is 30.25 meter
(v^2-u^2)/2a
11*11/2*2
121/4
30.25 m
Explanation :
Conduction : Conduction is the transfer of heat due to collision between the molecules in the substance.
It is the way of energy transferred in the solid.
Convection : When air is heated and then travels away from the source that means air caries the heat along.
it is called convection.
It is the way of energy transferred in the air and liquid.
Radiation : radiation generate from the emission of electromagnetic wave.
electromagnetic wave carry the energy away from the source which is emitting the radiation.
It is the way of energy transferred in the vacuum.
