Beings on spherical asteroid π have observed that a large rock is approaching their asteroid in a collision course. at from the center of the asteroid, the rock has a speed of and later at it has a speed o f use energy conservation to find the mass of asteroid π. you can neglect any effects due to the parent star of the asteroid. (g = 6.67 × 10 ^-11 n ∙ m^2/kg^2).a. 6.112 x 10^28 b. 4.582 x 10^20c. 4.582 x 10^21d. 9.164 x10^2

One day, after pulling down your window shade, you notice that sunlight is passing through a pinhole in the shade and making a small patch of light on the far wall. you see that the patch of light seems to be a circular diffraction pattern. it appears that the central maximum is about 1 cm across and you estimate that the distance from the window shade to the wall is about 3 m. what is (a) the average wavelength of sunlight? (b) the diameter of the pinhole?

10 newton object is placed 3 meters from the fulcrum. at what distance on the other side would you need to place a 15 newton object to balance the lever? show your work!

Choose the most likely outcome of this scenario: jen decided to go bike riding without a helmet. while no one is around during her ride, she is thrown from her bike when her wheel goes into a pothole. she is not injured, but she is terrified to get back on her bike. what happens next? a. her physical health is affected even though she wasn't hurt. b. her mental and emotional health are affected because she is afraid to get back on her bike. c. her social health is affected because she is worried her friends saw the fall. d. her overall health is not affected at all by her fall.