the refractive index of a particular glass is 1.5 and the angle of incidence is 50 degree. what is the angle of refraction?

How does the amount of energy required to hold each proton and neutron in the nucleus compare to the energy released when they are removed?

Drag each tile to the correct box. tiles bra i sequence

Awater balloon launcher uses an elastic band with a spring constant of 115 n/m to use thee launcher you stretch thee band back with a balloon n it the water balloons have a mass of 1.3 kg a) if you stretch the band by 0.8 m, what elastic force will the band exert? b) with the band stretched 0.8 m, how much elastic potential energy is stored in the spring? c) if you release the band, it pushes forward. what is the kinetic energy of the balloon when it reaches the natural length of the band? d) what is the speed of the balloon when it reaches the natural length of the band?