Patru elevi au măsurat aria unui caiet şi au găsit valorile: A 1 =14,50 cm 2 , A 2 = 14,10 cm 2 , A 3= 14,40 cm 2 şi A 4 = 14,60 cm 2 . Media aritmetică a măsurătorilor este…………………………
Cea mai mică eroare de măsurare faţă de valoarea medie o are elevul…………….

Carbon-14 is a radioactive element that undergoes beta decay. which force is responsible for allowing carbon-14 to become stable? electromagnetic gravitational weak nuclear strong nuclear

Asmall object with mass 0.200 kg swings back and forth on the lower end of a light rope that is 3.00 m long. the upper end of the rope is attached to the ceiling. as the object swings through its lowest position, where the rope is vertical, the speed of the object is 5.80 m/s. at this point in the motion, what is the tension in the rope? (use g = 9.80 m/s2.)

10 points! will mark brainiest! in a heat engine if 1,000 j of heat enters the system and the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2,000 j 1: write the equation2: list out your known variables 3: plug the numbers into the equations 4: solve 5: write your solution statement that includes initial energy and final energy added you so much!