By how much does the density of air increase when it is compressed to half its volume?

a. It is cut in half.
b. It quadruples.
c. It doubles.
d. It remains the same.

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.

F500 j of energy were added to 1 kg of each of these samples, which would experience the least temperature increase?

The free body diagram shows a box being pulled to the left up a 25-degree incline. the magnitude of the normal force is