Two students are working togteher to build a birdhouse. Student 1 applies a force of 10N to a wooden board in order to slide it across the tabel to student 2. If the force of friction resisting the student's push is 4N, what is the net force acting on the board?

Great amounts of electromagnetic energy from our sun and other bodies in space travel through space. which is a logical conclusion about these electromagnetic waves? their energy must be very their frequency must be very low these waves can travel without a medium they only travel through a vacuum of space