O carrinho A esta se aproximando com velocidade V(T1 inicial) do carrinho B, que esta primeiramente em repouso, ambos no referencial da Terra. Os carrinhos estao em um trilho de ar e o carrinho A tem 5 vezes a inercia do carrinhp. Sabendo que eles vão colidir elasticamente. Calcule as velocidades antes e depois da colisao:
a) No referencial da Terra.
b) No referencial de momento zero.
c) Faca um grafico do momento linear dos carros em funcao do tempo para o referencial de momento
zero. Considere t0 = 0, ∆tcolissao = t2−t1 e t3 o tempo apos a colisao. Coloque no grafico os resultados
para as velocidades obtidos no item precedente.

What is the function of the commutator in a dc motor? a. to spin the magnet b. to change direct current into alternating current c. to change alternating current into direct current d. to spin the wire coil

During spring semester at mit, residents of the parallel buildings of the east campus dorms battle one another with large catapults that are made with surgical hose mounted on a window frame. a balloon filled with dyed water is placed in a pouch attached to the hose, which is then stretched through the width of the room. assume that the stretching of the hose obeys hooke's law with a spring constant of 89.0 n/m. if the hose is stretched by 5.80 m and then released, how much work does the force from the hose do on the balloon in the pouch by the time the hose reaches its relaxed length? unitst 3 number-1497 the tolerance is +/-5% open show work click if you would like to show work for this question:

What are the factors that affect the resistance of a wire?