The term ______________ refers to the tendency of some mineral to break along flat planes at definite angles
Fill in the blank(s) with correct word
cleavage
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An object is thrown upwards with a speed of 16 m/s. How long does it take it to reach a height of 7.0 m on the way up? Neglect air resistance
A) 0.52 s B) 1.2 s C) 2.4 s D) 3.1 s E) 4.2 s
Halley's comet has an elliptical orbit around the Sun with a period of 76.0 years. At its closest approach (perihelion) it is 88.6 x 1010 m from the Sun and has a speed of 54.8 km/s
How far is it from the Sun at its furthest point (aphelion)? The mass of the Sun is 2.00 × 1030 kg and G = 6.67 x 10-11 N•m2/kg2. A) 12.8 × 1012 m B) 32.3 × 1012 m C) 5.42 × 1012 m D) 31.4 × 1012 m E) 52..3 × 1012 m
A 2.0-kg block sliding on a rough horizontal surface is attached to one end of a horizontal spring (k = 250 N/m) which has its other end fixed. The block passes through the equilibrium position with a speed of 2.6 m/s and first comes to rest at a displacement of 0.20 m from equilibrium. What is the coefficient of kinetic friction between the block and the horizontal surface?
a. 0.32 b. 0.45 c. 0.58 d. 0.19 e. 0.26
A girl on a bicycle takes 15.0 s to ride half way around a circular track of radius 10.0 m (Figure 3.4). (a) What is the girl’s average speed? (b) What is the magnitude of her average velocity?
What will be an ideal response?