Amixture of ordinary hydrogen and tritium (a hydrogen isotope whose nucleus is approximately three times more massive than ordinary hydrogen) is excited and its spectrum studied. calculate the shift in wavelength for the h ines of the two kinds of hydrogen. (given: r 109737 cm

An open cart is moving along a straight frictionless horizontal track. when rain starts falling vertically into the cart, what happens to the speed of the cart?

What are the necessary conditions for fusion?

During a medieval siege of a castle, the attacking army uses a trebuchet to hurl heavy stones at the castle walls. if the trebuchet launches the stones with a velocity of at an angle of 50.0°, (a) how long does it take the stone to hit the ground? (b) what is the maximum distance that the trebuchet can be from the castle wall to be in range? (c) how high will the stones go? show all your work.