A pully of 5cm radius with a belt, on a motor, is turning at 30rev/s and slows down uniformly to 20rev/s in 2s, find the angular and radial acceleration of the motor?

Ogle–2013–blg–0723 is an exoplanet that is similar to earth in size and proximity to its star. this exoplanet has mass m=4.18×1024kg and radius r=5.66×106m. an astronaut whose weight on earth is w=735n lands on the planet. a. calculate m, the mass of the astronaut. b. calculate gp? , the acceleration due to gravity on the surface of ogle–2013–blg–0723. c. calculate wp? , the weight of the astronaut on the surface of ogle–2013–blg–0723. d. calculate v, the minimum velocity required to put an object into orbit above ogle–2013–blg–0723. e. calculate t, the time required to complete an orbit around ogle–2013–blg–0723.

The respiratory system removes oxygen and water from the body. select the best answer from the choices provided t f

What is the temperature in degrees celsius of a substance with a tempature of 49k