A uniform 4.00 kg square solid wooden gate 2.00 m on each side hangs vertically from a frictionless pivot at the center of its upper edge. A 1.30 kg raven flying horizontally at 5.00 m\s flies into this door at its center and bounces back at 2.50 m/s in the opposite direction. What is the angular speed of the gate just after it is struck by the unfortunate raven?

Amichelson interferometer operating at a 600 nm wavelength has a 3.02-cm-long glass cell in one arm. to begin, the air is pumped out of the cell and mirror m2 is adjusted to produce a bright spot at the center of the interference pattern. then a valve is opened and air is slowly admitted into the cell. the index of refraction of air at 1.00 atm pressure is 1.00028.how many bright-dark-bright fringe shifts are observed as the cell fills with air?

Drag the tiles to the correct boxes to complete the pairs. match the jobs with the education requirements. childcare director clinical psychologist concierge cosmetologist vocational school and state licensure arrowright on-the-job training arrowright a ph.d. with licensure or certification, depending on the state in which you live arrowright a bachelor’s degree in early childhood development arrowright

Are formed where bumps from two surfaces come into contact ?