Juan created a chart to help him study for a test. х
some light is reflected
some light is absorbed
no light passes through
Y
some light is refracted
some light is absorbed
some light is reflected
most light passes through
Which headings best complete the chart?
X: Transparent Objects
Y: Opaque Objects
O X: Opaque Objects
Y: Transparent Objects
X: High Frequency Waves
Y: Low Frequency Waves
O X: Low Frequency Waves
Y: High Frequency Waves
J

Abatter hits the baseball a with an initial velocity of v0 = 110 ft/sec directly toward fielder b at an angle of 23° to the horizontal; the initial position of the ball is 2.2 ft above ground level. fielder b requires 0.44 sec to judge where the ball should be caught and begins moving to that position with constant speed. because of great experience, fielder b chooses his running speed so that he arrives at the “catch position” simultaneously with the baseball. the catch position is the field location at which the ball altitude is 8.4 ft. determine the velocity of the ball relative to the fielder at the instant the catch is made.

If forces acting on an object are unbalanced, which factors may result fron an unbalanced force? check all that apply

Scientific models are based on current knowledge, which can limit their effectiveness when new discoveries are made.