A robot exerts a horizontal force of 400 N, to move a large crate at a constant speed across a rough warehouse floor. The rate of work done by the robot is 800 W. Find the speed of the crate

Which of the following is a homogenous mixture? o a. a toy box filled with toys o b. blood o c. trail mix o d. spaghetti and meatballs submit

Matter is needed to transfer thermal energy bya. conductionb. convectionc. radiation d. both a & b.

Along wire carrying a 4.2 a current perpendicular to the xy-plane intersects the x-axis at x=−1.7cm. a second, parallel wire carrying a 3.0 a current intersects the x-axis at x=+1.7cm. part a at what point on the x-axis is the magnetic field zero if the two currents are in the same direction? express your answer to two significant figures and include the appropriate units.