CER AJUTOR IMEDIAT O placă dreptunghiulară cu lăţimea l = 1m şi lungimea L = 2m se încălzeşte cu 100ºC. Prin măsurare, un elev contată că lăţimea plăcii se măreşte cu 2mm (la încălzirea cu 100ºC).

Cu cât se dilată placa în lungime?

Calculati latimea si lungimea placii dilatate si aria acesteia.

Cu cât s-ar alungi o bară din acelaşi material având lungimea de 40m dacă s-ar încălzi cu 25ºC?

An experiment is designed to test the relationship between the initial height of a basketball before it is dropped to the height of its rebound bounce. the height of the rebound bounce is measured using a scale positioned behind the ball. in the above experiment, which condition would not be controlled? a). the starting height of the ballb). the surface the ball bounces on c). the type of ball d). the method to measure the rebound height of the ball

How much force was applied to an object if was moved 2 meters and the work done on the object was 8 joules? a. 0.25 n b. 4 n c. 6 n d. 16 n

Aria drove to the store, did some shopping, and then came home. during maria's trip, when was her displacement equal to zero?