o sursa luminoasa punctiforma se afla pe axul optic al unei lentile cu distanta focala f=3cm la distanta x1=4cm de centrul optic alacesteia . De cealalta parte, la d=3cm, se afla o lentila identica cu prima. Cele doua lentile au acelasi ax optic. Unde se va forma imaginea sursei de lumina?

True or false a high force means an object is moving fast100 points!

According to the tide table below what time of day will the highest tide occur?

Thomas his older brothers, who own a junk yard, on the weekends to earn extra money. he likes to them push broken-down cars to the back of the junk yard because it makes him feel strong. last saturday, they pushed three cars with different weights, and he noticed he used different amounts of force for each one. the cars were the following weights: white car: 2,700 kg red car: 1,500 kg blue car: 2,100 kg think about how much force is needed to move each car. which correctly lists the cars in order from the most to least amount of force needed to move them? a) white, blue, red b) blue, red, white c) red, white, blue d) white, red, blue