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

An air bubble of volume 20 cm³ is at the bottom of a lake 40 m deep, where the temperature is 4.0°c. the bubble rises to the surface, which is at a temperature of 20°c.take the temperature of the bubble’s air to be the same as that of the surrounding water. just as the bubble reaches the surface, what is its volume?

Which is not true about oxygen-17 and oxygen-18?

What properties of a moving object are used in determining the object's energy of motion