How does the amount of sand in a soil influence its water holding ability?
What will be an ideal response?
More sand=Better Water Holding Ability
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A car of mass 1689 kg collides head-on with a parked truck of mass 2000 kg. Spring mounted bumpers ensure that the collision is essentially elastic
If the velocity of the truck is 17 km/h (in the same direction as the car's initial velocity) after the collision, what was the initial speed of the car? A) 19 km/h B) 38 km/h C) 29 km/h D) 10 km/h
On a cosmic calendar, in which the history of the universe is compressed into 1 year, when did Kepler and Galileo first discover that we live on a planet in a solar system?
A) 1 second ago B) 1 day ago C) 1 week ago D) December 25 E) December 30
In science fiction movies, spaceships are often shown dodging through large numbers of closely spaced, boulder-size objects. Which of the following real things in our solar system would look most like such science fiction dangers?
A) the rings of Saturn B) the asteroid belt C) the Oort cloud D) the atmosphere of Jupiter
Two fireworks explode at the same position on the 4th of July. A stationary observer notices that the time interval between the two events was 5.00 seconds. A second observer flies past the fireworks at a speed of 0.600 c. What value does she obtain when she measures the time interval between the two explosions?
a. 8.33 s b. 6.25 s c. 4.00 s d. 3.00 s e. 5.00 s