On may 16, 2019 the transiting exoplanet survey satellite (tess) discovered two exoplanets orbiting a nearby sun-like star, hd 15337, with mass ma = 0.90m⊙. we will focus on the information that led to the discovery of the further of the two planets. the time between transits is p = 17.2 days. during a transit, the time from first to second contact is t2 − t1 = 6.4 minutes and the time from first to third contact ist3 − t1 = 111 minutes. doing follow-up radial velocity measurements of the star, you find that the peak radial velocity is vr = 3.798 km/s.
a. what is the semi-major axis of the planet’s orbit in au? b. what is the radius of the planet in earth radii?
c. what is the mass of the planet in earth masses?

the expression 15n + 2(3p) represents the amount isaiah spent buying gasoline and snacks, where n represents the price of each gallon of gasoline and p represents the cost of each snack that he bought. which statement is true about the amount isaiah spent?

the design of a ski jumping suit involves a trade-off between giving the skiers lift to get higher jumps and ensuring the skier does not face a lot of drag before the jump itself. an expansive suit may to lift the skier higher, but at the same time, it will also increase the air resistance. higher air resistance as the skier goes down the slope limits the speed of the jump. a big suit also increases the risk of losing balance or control, especially if there's a strong gust of wind. while technologically enhanced suits a lot, clothing is not the only factor in a ski jumper’s success. gathering speed while skiing down the slope, ensuring good speed on the ramp, and maintaining good body posture and form in the air all contribute to a ski jumper's success.