How could you increase the potential energy of the roller coaster shown below?
a. incre...
Physics, 30.10.2019 22:31 abebaretosuacegod445
How could you increase the potential energy of the roller coaster shown below?
a. increase the height of the hill.
b. make the roller coaster cars heavier.
c. make the roller coaster cars lighter.
choice a only
choice a and b
choice b only
choice a, b and c
Answers: 3
Physics, 22.06.2019 16:50
Abird flies directly overhead from where you stand at an altitude of 300.0 m and at a speed horizontal to the ground of 20.0 m/s. the bird has a mass of 2.0 kg. the radius vector to the bird makes an angle \thetaθ with respect to the ground. the radius vector to the bird and its momentum vector lie in the xyxy-plane. what is the bird’s angular momentum about the point where you are standing?
Answers: 2
Physics, 22.06.2019 21:10
Which of the following is a measure of the amount of light a star directly emits? a. luminosity b. intensity c. wavelength d. brightness
Answers: 2
Physics, 22.06.2019 23:30
You have two photos of a person walking. one shows the person at the corner of third and main streets, the other shows the person at the corner of tenth and main streets. there are lampposts at every corner in this town, and the first picture shows it to be 10: 32: 00 exactly. the second picture shows it to be 10: 49: 30. you know three facts: (1) all of the clocks are synchronized; (2) there are exactly 12 equal-sized blocks per kilometer in this town; and (3) the streets that cross main in this area are numbered consecutively, with no interruptions. what is the person’s average speed in kilometers per hour?
Answers: 2
Physics, 23.06.2019 02:30
Apropagating wave in space with electric and magnetic components. these components oscillate at right angles to each other. it may travel in a vacuum.
Answers: 1
History, 12.12.2019 10:31
English, 12.12.2019 10:31
English, 12.12.2019 10:31
Mathematics, 12.12.2019 10:31
Mathematics, 12.12.2019 10:31
History, 12.12.2019 10:31
Mathematics, 12.12.2019 10:31
Mathematics, 12.12.2019 10:31
Computers and Technology, 12.12.2019 10:31
Social Studies, 12.12.2019 10:31
Mathematics, 12.12.2019 10:31