A car goes from rest to 25 m/s in 10 seconds. How fast is the car going 3 seconds after it starts? 25 m/s, 2.5 m/s, 7.5 m/s, 1.2 m/s, cannot be determined

Which statement correctly describes a step-up transformer? a. it increases the amount of electric energy available. b. it increases the voltage of an electric current. c. it changes direct current into alternating current. d. it has more loops of wire in its primary coil.

In positive numbers less than 1, the zeros between the decimal point and a non-zero number are blank significant

This is important. 1. which of the following is an si base unit for measuring length? (2 points) inch gram meter mole 2. which of the following units for distance is an si unit? (2 points) centimeter foot inch yard 3. which of the following tools should a scientist use to measure an object in meters? (2 points) electronic balance pan balance tape measure thermometer