Is the year 3539 and, on his 30th birthday, Albert leaves for a new job opening on the planet Zil. After saying goodbye to his twin brother Henry, Albert jumps in his
spacecraft and takes off for Zil traveling at a speed of 0.95c. The total trip takes 3.0
years according to the clocks on board Albert's spaceship. How old are Henry and
Albert when the three-year journey is complete. (Show work)!!

Please help ! I’ll mark brainliest

•• al and bert are jogging side-by-side on a trail in the woods at a speed of 0.75 m/s. suddenly al sees the end of the trail 35 m ahead and decides to speed up to reach it. he accelerates at a constant rate of 0.50 m/s2, while bert continues on at a constant speed. (a) how long does it take al to reach the end of the trail? (b) once he reaches the end of the trail, he immediately turns around and heads back along the trail with a constant speed of 0.85 m/s. how long does it take him to meet up with bert? (c) how far are they from the end of the trail when they meet?

In a simplified model of the human eye, the aqueous and vitreous humors and the lens all have a refractive index of 1.40, and all the refraction occurs at the cornea, whose vertex is 2.60 cm from the retina. what should be the radius of curvature of the cornea such that the image of an object 40.0 cm from the cornea’s vertex is focused on the retina?

For the car in the picture ,in which direction is the normal force? -into the screen -down -out of the screen -up