Answer:
Explanation:
The normal component of force applied = 5.23 sin 51 N
Let R be the reaction force from the ground . Weight of the toy
W = mg
.518 x 9.8
= 5.07 N
As there is no movement in vertical direction , these forces will um up to zero
W - R - 5.23 SIN 51 = 0
R = W - 5.23 SIN 51
5.07 - 4.06 N .
1.01 N .
Answer:
because they are underaged and prob dont care and also the gov thinks that the youth cant make a reasonable decision for them selves for sum like that and the media influnces them to by saying whats going on and who supports who
Answer:
λ = 0.03 s⁻¹
Explanation:
The formula for decay constant can be used as follows:
where,
= ratio of remaining nuclei to the initial value of nuclei = = 0.167
t = time = 60 s
λ = decay constant = ?
Therefore,
<u>λ = 0.03 s⁻¹</u>
Answer:
2993 °C
Explanation:
A reaction is spontaneous if the free Gibbs energy (ΔG) is negative. ΔG is related to the enthalpy of the reaction (ΔH) and the entropy of the reaction (ΔS) through the following expression.
ΔG = ΔH - T . ΔS
For 1 mol, if ΔG < 0, then
ΔH - T . ΔS < 0
ΔH < T . ΔS
-320.1 × 10³ J < T . (-98.00 J/K)
T < 3266 K
To convert Kelvin to Celsius we use the following expression.
K = °C + 273.15
°C = K - 273.15 = 3266 - 273.15 = 2993 °C
Answer: Green house effect is the process affected by the absorption of the thermal energy from the sun.
Explanation:
Green house effect is the process in which the thermal energy is received from the sun. This thermal energy warms the earth's surface. Some sun's energy reaches the Earth's atmosphere and some are reflected to the space. The rest is mostly absorbed by the water vapor and carbon dioxide and some are re-radiated by the green house gases.
This effects maintains the earth's temperature.
Therefore, green house effect is the process affected by the absorption of the thermal energy from the sun.