Answer:
24445.85 J/s
Explanation:
Area, A = 300 m^2
T = 33° C = 33 + 273 = 306 k
To = 18° C = 18 + 273 = 291 k
emissivity, e = 0.9
Use the Stefan's Boltzman law

Where, e be the energy radiated per unit time, σ be the Stefan's constant, e be the emissivity, T be the temperature of the body and To be the absolute temperature of surroundings.
The value of Stefan's constant, σ = 5.67 x 10^-8 W/m^2k^4
By substituting the values

E = 24445.85 J/s
Answer:
A pure substance has only one substance while a mixture has two or more substances
Explanation:
Answer:
F = 2553.6 N
Explanation:
v² = u² + 2as
0² = 16² + 2a4.0
a = -32 m/s²
F = ma = 79.8(32) = 2553.6 N
Answer:
the answer is 0 .75m
Explanation:
where are finding the distance the speed is given as well as the time..so you multiple the speed with the time thus you get the distance..i hope that's the answer..
<u>Answer:</u> The correct answer is 2.24 MeV.
<u>Explanation:</u>
The chemical reaction for the formation of deuterium from proton and neutron follows:

We are given:
Mass of
= 1.00784 u
Mass of
= 1.008665 u
Mass of
= 2.014102 u
To calculate the mass defect, we use the equation:


To calculate the energy released, we use the equation:

(Conversion factor:
)

Hence, the energy released in the given nuclear reaction is 2.24 MeV.