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Q1. A conveyor belt at a quarry lifts 2,000 kg of sand per minute up a vertical distance of 12 meters. The sand is at first at rest, then moves at a speed of 0.20 m/s along conveyor belt. What is the instantaneous power generated by this machine?
Q2. An airplane is flying horizontally with the speed of 1300km/h when an engine falls off. Neglect air resistance; imagine it takes 25 s for the engine to hit the ground.
a) What is the altitude of the plane?
b) What is the horizontal distance the airplane engine falls?
a) Determine the magnitude and direction of the electrostatic force acting on particle A in the figure given below due to particles B and C . The values of the charge on these particles are indicated in the figure.
an alternating rc circuit is constructed from a 331+/- 3 uF capacitor and a 15+/-.15 ohm resistor connected in series with an alternating voltage source that has a frequency of 100 Hz. Determine phase angle between the supplied EMF and the current..
The front and rear sprockets on a bicycle have radii of 8.67 and 5.55cm, respectively. Calculate the linear speed (in cm/s) of the chain as it moves between the sprockets
A pipe carrying 20°C water has a diameter of 2.4 cm. Estimate the maximum flow speed if the flow must be streamline
Two point charges of equal magnitude are 6.1 cm apart. At the midpoint of the line connecting them, their combined electric field has a magnitude of 37 N/C
A large oak tree produces 2.2 metric tons of wood over a 50 year growth lifespan. find the tree's efficiency for converting solar energy to wood heating value
Dorothy is up on her 14.0m by 18.0m roof enjoying the view of Kansas. Suddenly, a strong wind blows down her ladder, leaving her stranded. Calculate the force on the roof
The power required by an ice maker is 225 W and is the rate at which it does work. determine the maximum amount of ice the unit can produce in one day
The electric field of a sinusoidal electromagnetic wave obeys the equation , find the amplitude of the electric field of this wave
question1as standing at the edge of the roof of a building you throw a stone upward with an initial speed of 7.87 ms.
A proton is projected in the positive x direction into a region of uniform electric field E = -5.50 105 i N/C at t = 0. Determine the time interval over which the proton comes to rest
calculate the fraction of which is submerged when the cylinder floats in alcohol. Fraction of Vwood submerged.
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