7. A boat heads directly southward across a river at 12 m/s as shown below. If the current in the river is flowing at 5 m/s due east, what is the magnitude of the boat's
resultant velocity?

Three point charges, two positive and one negative, each having a magnitude of 20 μc are placed at the vertices of an equilateral triangle (30 cm on a side). what is the magnitude of the electrostatic force on the negative charge

According to newton’s first law of motion, which force is expected to cause a body to accelerate?

Which of the following is not a physical property of mattera. melting pointb.heat of combustionc. viscosityd. boiling point