The magnetic field in a region of space is specified by its x, y, and z components which are respectively bx = 0.146 t, by = 0.177 t, and bz = 0.200 t. if a 30.0-cm wire carrying a current of 3.35 a is oriented along the z-axis with the current in the −z direction, determine the magnitude and direction of the force acting on the wire.

An engineer designs a roller coaster so that a car travels horizontally for 152 ft, then climbs 137 ft at an angle of 34.0° above the horizontal. it then moves 137 ft at an angle of 48.0° below the horizontal. if we take the initial horizontal motion of the car to be along the +x-axis, what is the car's displacement? (give the magnitude of your answer, in ft, to at least four significant figures and give the direction of your answer in degrees counterclockwise from the +x-axis.)

When you push downward on a book at rest on a table, you feel an upward force. does this force depend on friction? defend your answer.

If angle "a" is 25°, angle "b" is: a) equal to angle c b) less than angle c c) greater than angle c