Answer:
773.15K
Explanation:
Temperature is measured in different units, however, the standard or absolute temperature unit is Kelvin (K).
To convert the temperature of a black body, which is 500°C to Kelvin, we use;
T(K) = T(°C) + 273.15
T(K) = 500°C + 273.15
T(K) = 773.15K
Hence, the temperature of the blackbody at 500°C will be 773.15 K for it to radiate twice as much energy per second.
Answer:

Explanation:
As per Heisenberg's uncertainty principle we know that

so here we have


now from above equation we have




Answer:
the one with v = 25 m/s
Explanation:
Momentum = m * v
if they both have the same mass (15000 kg) , then the one with the higher v has more momentum...I think A= 25 m/s
Answer:
D) They most likely died from not wearing a seatbelt.
Explanation:
Their death was caused by a "motor vehicle" (that's what MV stands for in this case). The most logical answer would be D.