A baseball pitcher can throw a ball with a speed of 40. he, Ask an Expert

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Q. A baseball pitcher can throw a ball with a speed of 40. He is in the back of a pickup truck that is driving away from you. He throws the ball in your direction, and it floats toward you at a lazy 30. What is the speed of truck?

Q. A screen is placed 50.0 cm from a single slit that is illuminated with light of wavelength 676 nm. If the distance between the first and third minima in the diffraction pattern is 3.00 mm, what is the width of the slit?

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