Calculate the planetary phase angle (counterclockwise from earth, a = 1.0 au) that a probe may correctly complete a hohmann transfer orbit to venus (a = 0.7 au).

60.85° counterclockwise

Explanation:

Data provided in the question:

a₁ = 1.0 AU

a₂ = 0.7 AU

Now,

The phase angle ( α ) is calculated using the formula

α =

on substituting the respective values, we get

α =

or

α = -1.062 radians

Here, the negative sign depicts the counterclockwise direction

Now,

1 radian = degrees

therefore,

-1.062 radians = -1.062 × degrees

or

-1.062 radians = -60.85°

Hence,

The planetary phase angle between them is 60.85° counterclockwise

answer: 802.3 kilo joules of energy represents 191.75 kilo calorie of energy.

explanation:

energy released during combustion of one mole methane = 802.3 kilo joules

if 1 kilo joule = 0.239006   kilo calorie

then ,802.3 kilo joule will be = 802.30.239006 kilo calorie

802.3 kilo joule = 191.75 kilo calorie

hence, the energy in kilo calorie is 191.75 kilo calorie.

wind moving at higher speeds will transfer more energy to the water, resulting in stronger waves.