In a circuit, both an ammeter and a voltmeter are used. what are their purposes?
select one of the options below as your
a.
the ammeter measures power and the voltmeter measures voltage.
b.
the ammeter measures current and the voltmeter measures voltage.
c.
the ammeter measures current and the voltmeter measures resistance.
d.
the ammeter measures voltage and the voltmeter measures power.
e.
the ammeter measures current and the voltmeter measures power

Astudent pushes on a 20.0 kg box with a force of 50 n at an angle of 30° below the horizontal. the box accelerates at a rate of 0.5 m/s2 across a horizontal floor. what is the value of the normal force on the box? 200 n 243 n 156 n 225 n

You are the coordinator for a program that is going to take place at night in a rectangular amphitheater in the mountains. you will have no access to any electricity, but you must be able to illuminate the entire grounds. you know the intensity of the light from a lantern varies inversely as the square of the distance from the lantern. suppose the intensity is 90 when the distance is 5 m. a. write an equation to model the situation. b. solve for the constant of variation. c. write the equation to model the situation using the constant () of variation. d. you have been given lanterns with 40 light intensity. use your equation to solve for the distance from the lantern. e. you need to illuminate 225 km. how many meters do you need to light? f. how many lanterns will you need?

Answer fast! which lens can produce a virtual image and a real image? concave lens convex lens flat lens