The position of a particle moving along the x axis is given by x = 6.0t2? 1.0t3, where x is in meters and t in seconds. What is the position of the particle when it achieves its maximum speed in the positive x direction?
A. 24 m
B. 12 m
C. 32 m
D. 16 m
E. 2.0 m
Answer: D
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Buoyancy: Salt water is denser than fresh water. A ship floats in both fresh water and salt water. Compared to the fresh water, the volume of water displaced in the salt water is
A. more. B. less. C. the same. D. Cannot be determined because we do not know the volume of the ship.
A car starts out when the air temperature is 288 K. The air pressure in the tires is 500 kPa. After driving a while, the temperature of the air in the tires increases to 298 K
What is the pressure in the tires at that point, assuming the volume remains constant? A) 129 kPa B) 483 kPa C) 507 kPa D) 517 kPa E) 532 kPa
Rocks formed from consolidated sediment deposited in layers are known as _____________ rocks
a. crystalized b. foliated c. igneous d. sedimentary
Find the average density of a white dwarf star if it has a mass equal to that of the sun (2.0 × 10^30 kg) and a radius equal to that of the Earth (6.4 × 10^6 m)
a. 9.0 × 10^6 kg/m3 b. 1.8 × 10^7 kg/m3 c. 1.8 × 10^9 kg/m3 d. 3.6 × 10^10 kg/m3 e. 9.0 × 10^7 kg/m3