As a sample of water is heated, the energy is used to overcome the attractions between the molecules so that they begin to move past one
another. Then, the kinetic energy of its molecules increases. Which sections
of the heating curve illustrate this process?
200
150
D
100
A А
Temperature (°C)
50
с
0
7
-50
0
10
20
50
60
70
30 40
Time (min)
A. A followed by C
B. A followed by B
Ο Ο Ο Ο
C. C followed by B
D. B followed by C

Ogle–2013–blg–0723 is an exoplanet that is similar to earth in size and proximity to its star. this exoplanet has mass m=4.18×1024kg and radius r=5.66×106m. an astronaut whose weight on earth is w=735n lands on the planet. a. calculate m, the mass of the astronaut. b. calculate gp? , the acceleration due to gravity on the surface of ogle–2013–blg–0723. c. calculate wp? , the weight of the astronaut on the surface of ogle–2013–blg–0723. d. calculate v, the minimum velocity required to put an object into orbit above ogle–2013–blg–0723. e. calculate t, the time required to complete an orbit around ogle–2013–blg–0723.

What is the length x of the side of the triangle below? (hint: use the cosine function)

Which of the following is the phase that results when the moon is on the opposite side of the earth from the sun? a. quarter moon b. crescent moon c. new moon d. full moon