QUESTION 4

An 800.0 kg roller coaster car is at rest at the top of a 95 m hill. It rolls down the first drop to a height of 31 m. When it travels to the top of the second hill, it is moving at 35 m/s. It then rolls down the second hill until it is at ground level. Draw a picture of the roller coaster drop and calculate the kinetic and potential energy at the top of the second hill.

Answer:

QUESTION 5

An object is 35.0 cm to the left of a convex lens with a focal length of +8.0 cm. Draw a ray diagram of the setup showing the location of the image. Calculate the distance of the image from the lens. Is the image upright or inverted?

QUESTION 6

Thorium-234 decays by giving off one particle, and the decay can be represented by the following nuclear equation: 123 90 Th---> 239 91 Pa+H

1.What is the complete equation?

2.What type of radiation is given off in this reaction?

3.Where does it come from?