If a rock contains both quartz and pyroxene (a silicate mineral), which melts first as the rock is heated?
What will be an ideal response?
quartz
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Three point charges are placed on the x-axis. A charge of +2.0 ?C is placed at the origin, -2.0 ?C to the right at x = 50 cm, and +4.0 ?C at the 100 cm mark
What are the magnitude and direction of the electrostatic force that acts on the charge at the origin? (k = 1/4??0 = 8.99 × 109 N ? m2/C2)
A spaceship moves away from the Earth with a speed of 0.80c. The spaceship then fires a missile with a speed of 0.50c relative to the spaceship
(a) What is the velocity of the missile measured by observers on the Earth if the missile is fired away from the Earth? (b) What is the velocity of the missile measured by observers on the Earth if the missile is fired toward the Earth?
The enclosed mass M( A) concentrated in the center
B) spread out over a large range of radii
C) distributed like a doughnut, with a hole in the center
A uniform solid sphere rolls without slipping along a horizontal surface. What fraction of its total kinetic energy is in the form of rotational kinetic energy about the CM?