Three resistors are hooked up in series. they are powered by a 4.5-volt battery. if the values of the resistors are 220 ohms, 330 ohms, and 270 ohms, what is the current through the middle resistor? give your answer to the correct number of significant digits and provide the correct units

Which of the following is an example of units for speed

When considering gravity acceleration and the force of acceleration, what must be true? a. the direction of acceleration must be perpendicular to the direction of the force. b. the direction of the force and the direction of acceleration must be the same as each other. c. the direction of the force and the direction of acceleration must be opposite of each other. d. the mass of the body must be the same as the acceleration of the body.

The experiment done in lab is repeated, using a ball that has unknown mass m. you plot your data in the form of f 2 versus m/l, with f in rev/s, m in kg, and l in m. your data falls close to a straight line that has slope 3.19 m/(kg · s2). use g = 9.80 m/s2 and calculate the mass m of the ball.