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Q1. A unit of area often used in measuring land areas is the hectare defined as 114 m2. An open pit coal mine consumed 77 hectares of land down to the depth of 37 m each year. What is the volume of earth in cubic kilometres removed in this time?
Q2. At what distance from a backstop will a package need to be placed depending on its weight and knowing it has to hit the backdrop at a velocity of 66 in/sec on a 11 degree angle. What is distance for every 5 lbs of package weight?
One side of the roof of a building slopes up at 34.0°. A student throws a Frisbee onto the roof. It strikes with a speed of 15.0 m/s and does not bounce, but slides straight up incline. The coefficient of kinetic friction between plastic and roof is ..
Where is center of mass of the system
Charge is scattered uniformly throughout a long cylindrical shell of inner radius R and out radius 2R. At what radius is the electric field equal to one-half the value on the outer surface.
The stirrer is used to stir the mixture until it reaches its last equilibrium temperature of 32°C. Analyse the mass of the aluminum cup.
A football spends a total of 5 seconds in the air. It reaches a peak height of 30 meters. How long does it take to reach its peak height? The football has the range of 90 yards. What is its horizontal velocity.
Assume unpolarized light of intensity 197 W/m2 falls on the polarizer in the figure, and the angle in the drawing is 37.0°. What is the light intensity reaching the photocell?
Find out the velocity of the rain
Find the magnitude of total displacement of the object
Find the radius of the largest water drop
A uniform density cube of mass m, side 2b, and center at C is placed on a fixed horizontal cylinder of radius r and center O in Earth's gravitational field. The cube is originally put so that C is centered above O, but it can roll from side to side w..
What is the horizontal distance the airplane engine falls. find out the time that was recorded on Earth.
What is the velocity of observer B relative to observer A . A diver shines a light up to surface of a flat glass-bottomed boat at an angle of 36 relative to the normal.
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