Color is a reliable physical property to use for mineral identification
TRUE
FALSE
FALSE
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A 1.5-kg playground ball is moving with a velocity of 3.0 m/s directed 30° below the horizontal just before it strikes a horizontal surface. The ball leaves this surface 0.50 s later with a velocity of 2.0 m/s directed 60° above the horizontal. What is the magnitude of the average resultant force on the ball?
a. 14 N b. 11 N c. 18 N d. 22 N e. 3.0 N
In Part A, you found that Planet Z should not have polar ice caps or liquid water. What single change to Planet Z's characteristics would allow it to have these things?
a. a larger size b. a larger axis tilt c. a greater distance from its star d. a smaller size
A Cessna aircraft has a liftoff speed of 120 km/hr. What minimum constant acceleration does this require if the aircraft is to be airborne after a takeoff run of 200 m?
a. 2.31 m/s2 c. 4.63 m/s2 b. 2.78 m/s2 d. 5.55 m/s2
How does the amount of sand in a soil influence its water holding ability?
What will be an ideal response?