How many turns are in the secondary coil of a step up transformer that increases voltage from 30 V to 150 V and has seven turns in the primary coil?

Which is not an example of work being done? a. Pushing a backpack to class. b. Pulling a backpack to class. c. Carrying a backpack to class. d. Lifting a backpack from the floor to the table.

Mike's car, which weighs 1,000 kg, is out of gas. Mike is trying to push the car to a gas station, and he makes the car go 0.05 m/s2. Using Newton's Second Law, you can compute how much force Mike is applying to the car.

What happens when the thermal energy of a substance increases?

Which of the following is an example of an archery contestant showing good precision but poor accuracy? O A. Hitting a bulls-eye once and then missing a second time O B. Hitting a bulls-eye every time O C.

9 volt battery is connected to three 20 Ohm resistors in series. What is the total resistance of the load and current through each?

A child pushes horizontally on a box of mass m which moves with constant speed v across a horizontal floor. The coefficient of friction between the box and the floor is μ. At what rate does the child do work on the box?

What two qauntities must be known to calculate the density of a sample of matter

An element's atomic number is 38. How many protons would an atom of this element have?

What's are some forms of chemical energy

True or false a liquid does not have a definite shape, but it does have a definite volume.