What instrument is used to measure current?

1. a current machine

2. an ammeter

3. a currentometer

4. a voltmeter

Suppose a transformer's primary coil has 10 times as many turns as its secondary coil. Why does the transformer normally deliver only about 1/10th of the voltage it receives

A cars velocity changes from 100 m/s to 20 m/s in 40 seconds. What is the acceleration of the car?

Again in a movie projector, where is the film positioned? a. A little under one focal length behind the lens. b. Exactly one focal length behind the lens. c. A little over one focal length behind the lens.

The lung capacity of the average adult is 5.5 liters at the surface and only. 37 liters at a depth of 100 meters.

What is net displacement vector? I just started AP Physics 1.

The boom of a fire truck raises a fireman (and his equipment - total weight 280 lbf) 60 ft into the air to fight a building fire.

Two masses are separated by 1 m. suppose the masses are moved so they are 2 m apart how will the gravitational force change

Bob rubs a piece of fur on a hand rubber rod, giving the rod a negative charge. what happens?

The period of a simple pendulum is 3.8 s. the length of the pendulum is doubled. what is the period t of the longer pendulum? t = s

True or false - sound waves can travel across outer space.