The first hill of a roller coaster is 42.0 meters high. The roller coaster drops to a height of
4.2 meters above the ground at the bottom of this first hill. If the mass of the roller
coaster is 34,500 kg, what is the velocity at the bottom of the first hill? Ignore friction and
assume the velocity at the top of the first hill is 0 m/s.
Answers: 3
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If you touch a hot light bulb and get burned, that is an example of a. radiation b. convection c. conduction
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In which of the following would the particles move most rapidly? a. ice at -20 °c b. water at 20 °c c. steam at 110 °c d. boiling water e. ice at 0 °c
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Physics, 23.06.2019 05:30
The reason a penny thrown straight up inside a bus will come back to your hand is that you,the bus,the air inside the bus, and the penny are all moving at the same velocity. true or false
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Physics, 23.06.2019 09:30
The vector a? is 3.50 cm long and is directed into this page. vector b? points from the lower-right corner of this page to the upper-left corner of this page and has the components bx=-19.5 cm , by=25 cm. in the right-handed coordinate system, where the +x-axis directed to the right, the +y-axis toward the top of the page, and +z-axis out of the page, find the x-component of the vector product a? ×b? , measured in cm2.
Answers: 1
The first hill of a roller coaster is 42.0 meters high. The roller coaster drops to a height of
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