Aman is dragging a trunk up the loading ramp of a mover’s truck. the ramp has a slope angle of 20.0°, and the man pulls upward with a force f s whose direction makes an angle of 30.0° with the ramp (fig. e4.4). (a) how large a force f s is necessary for the component fx parallel to the ramp to be 90.0 n

Asample of a gaseous substance changes into a liquid

The passage that directs air to the lungs is called a. diaphragm. b. larynx. c. bronchi. d. pharynx.

If an astronaut takes an object to the moon the following is true (choose only one). a the mass will change but the weight will be the same. b both the mass and the weight of the object will be the same. c the weight will change but the mass will be the same. d both the mass and the weight of the object will change.