The solar neutrino problem was solved when we realized neutrinos change types when they pass through matter
Indicate whether the statement is true or false
TRUE
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Planetary nebulae are sites of planet formation
a. True b. False Indicate whether the statement is true or false
As you are standing on the lakeshore on a calm day, a friend in a boat 300 m offshore calls out to you. Simultaneously, a friend who is 300 m inland yells to get your attention. Which one will you hear first?
A. the friend offshore B. the friend inland C. you will hear both at the same time D. sound can't carry that far
A flatbed truck is carrying a load of timber which is not tied down. The mass of the timber is 800 kg. The maximum frictional force between the truck bed and the load is 2400 N
What is the highest acceleration that the truck can have without losing its load?
A farsighted person cannot see clearly closer than 2.0 m. What power contact lenses would correct this near point to 25 cm?
A. 2.0 D B. 0.5 D C. -0.5 D D. 3.5 D E. -3.5 D