A bat strikes a 0.145-kgkg baseball. Just before impact, the ball is traveling horizontally to the right at 47.0 m/sm/s ; when it leaves the bat, the ball is traveling to the left at an angle of 29.0 ∘∘ above horizontal with a speed of 59.0 m/sm/s . The ball and bat are in contact for 1.71 msms . Part A Find the horizontal and vertical components of the average force on the ball. Let +x+x be to the right and +y+y be upward Express your answers using three significant figures separated by a comma.

Comedians like to joke that the reason we haven’t been visited by intelligent life from elsewhere in the universe is that aliens have been monitoring earth’s broadcasts of intellectually embarrassing tv programs, like gilligan’s island, fear factor, the jersey shore, and the jerry springer showand so consider us far too primitive to merit a visit. let’s check the assertion that aliens could have been receiving them. tv programs are broadcast at a frequency of about 100mhz with about 100kw of total power in 30frames per second, which emanatesroughly uniformly in all directions. assume that interstellar space transmits these broadcasts without attenuation. no matter how smart they are, aliens would require at least one photon per frame to interpret our signals. findthe number of photons per unit time per unit area reaching a receiver on a possible planet in the nearest star system, which is about 4 light-years away (a light-year is the distance light travels in a year). if aliens aimed a receiver or detector directly at earth, how big (in diameter) would it have to be to receive a photon per frame

The position of a crate sliding down a ramp is given by x=(0.05t^3) m, y=(1.7t^2) m, z=(6−0.85t^5/2) m, where t is in seconds. (a) determine the magnitude of the crate's velocity when t = 2 s. (b) determine the magnitude of the crate's acceleration when t = 2 s.

True or false graphs must include scales that increase by the same amount