An object has a mass of 45-kg and is moving with a velocity of 10.0 m/s. If the object travels over a section of friction that slows down to a velocity of 5.0 m/s. If the section was 5 m in length, determine the frictional force on the object.

Trumpeter a holds a b-flat note on the trumpet for a long time. person c is running towards the trumpeter at a constant velocity. person b is running away from the trumpeter at the same rate. person d is standing still the whole time. which person hears a frequency that is lower than the b-flat?

Which surface feature of the moon is characterized by mountainous areas? terrae craters maria regolith

An electron and a proton have the same kinetic energy upon entering a region of constant magnetic field and their velocity vectors are perpendicular to the magnetic field. suppose the magnetic field is strong enough to allow the particles to circle in the field. note: you'll need to look up the masses for an electron and proton. 1) what is the ratio of the radii of their circular paths rp/re?