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A 400 m deep open-pit mine has a number of 15 m high and 70 degrees inclined benches. The pit is served by a 30 m wide haul road that wraps around the pit twice. If the overall slope angle of the pit is 45 degrees, calculate the following:
a. The number of benches in the pitb. Bench slope face width to 2 decimal point accuracyc. What is the total pit width to 2 decimal point accuracy?d. What is the individual berm width to 2 decimal point accuracy?
An infinite plane of charge with σ= -3.60 µC/m2 is at x = -2.5 cm, and an infinite plane of charge with σ = 7.70 µC/m2 is at x = 2.5 cm. What is the electric field at x = 1.00 cm
what is the magnitude of the electrostatic force between a singly charged sodium ion na of charge e and an adjacent
This is because of the average release of about 0.03 J per kilogram each year. Show that at 500 C increase in temperature for a thermally insulated chunk of granite takes about 13.3 million years. (Assume that the specific heat of capacity c of g..
a pair of hedge trimmers are 45 cm long from the pivot to the end of the handles. if the person applies of a force of
an airplane starting from airport a flies 300 km east then 335 km at 27.0deg west of north and then 150 km north to
a 2.00-mol sample of a diatomic ideal gas expands slowly and adiabatically from a pressure of 5.02 atm and a volume of
An oscillating mass-spring system has the following:displacement x=10cm; linear speed v=-20m/s, and an acceleration a=-20 m/s^2 what is the period of oscillation of the system
A step-down transformer is used for recharging the batteries of portable devices. Find the power delivered to the CD player
The position of the particle as a function of time expressed by the equation position vector r (t) = (at2 + bt) i + (ct + d) j with a, b, c, and d are constants that have the appropriate dimension. Determine the particle displacement vector between t..
An electron is accelerated by a uniform electric field (1000 V/m) pointing vertically upward. Utilize newton's laws to determine the electron's velocity after it moves .10 cm.
When two point charges are a distance R apart, their potential energy is -2.00 J. How far (in terms of R) should they be from each other
How does the behavior of the light beam differ from the behavior of a bullet fired in the same direction from the top of the freight car?
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