Answer:
It gets refracted.
Explanation:
When light beam travels through different mediums they refract i.e. they change their direction. Here the angle of incidence is less than 90°. After entering the glass slab the light beam will move towards the normal (a line drawn perpendicular to the interface of the two mediums). Thus the angle of refraction will be even lesser than angle of incidence.
Answer: 50 Pa
Explanation:
Pressure = Force/Area
Pressure = N/m^2
Pressure = 1250/25
Pressure = 50
Pressure = 50 Pa
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She feel warm due to sun shining on her back which shows the transfer of energy due to Radiation Mode of heat transfer.
Because in this case we do not need any medium to transfer the heat and all energy is transferred due to electromagnetic waves.
She feels warm sand under her feet which shows the heat transfer due to conduction mode.
Because in this mode of heat transfer the heat is transmitted by direct contact.
A cool breeze is blowing from the water which shows the heat transfer due to convection mode.
Here thermal energy is being transferred by the moving medium molecules.
Answer:
2
Explanation:
mars has a shorter year because when it revolves around the sun, it takes less time than, saturn who is millions of miles away from mars, longer. Also, mars is closer to the sun than saturn
When an object gets heated by a temperature ΔT energy needed, E = mcΔT
Here mass of glass = 55 g =
Change in temperature ΔT = 16^0C[/tex] = 16 K
Specific heat of glass = 0.84 J/gK = 840 J/kgK
Substituting we will get
E = *840*16 = 739.2 J
So a heat of 739.2 J is required to raise the temperature of a 55 g glass ball by 16°C