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It takes an elevator 3.5 minutes to raise a vehicle with a weight of 4198 N from the floor to a height of 8 meters. What size (power) motor (in watts) does it take to do the job? Hint: this is a multiple step problem in which you must derive the variables needed to solve for problem in step one and then apply those values to the final solution of the problem. Watch your units.
A gasoline engine absorbs 1900 J of heat and performs 530.0 J of mechanical work in each cycle. What is the efficiency of the engine
A slingshot will shoot a 19 g pebble27.0 m straight up. How much potential energy is stored in the sling shot's rubber band
Find the focal length of a concave mirror if an object 12cm from the mirror has a virtual image 2.1 times the object's actual size
Can the Sum of the torques on an object be zero while the net force on the object is nonzero? Explain. Can the Sum of the forces on an object be zero and the Sum of the torques non- zero
An LC circuit like the one in Figure CQ32.8 contains an 82.0 mH inductor and a 17.0 micro Farad capacitor that initially carries a 180 micro Coulomb charge. The switch is open for t
An electromagnetic wave propagates along the +y direction, If the magnetic field at the origin is along the +x direction, what is the direction of the electric field
A farm water sprinkler is dead headed .the pipe raduis is 4 inches. What is the averge stress when the pressure drop is 38 psi over the entier lenght of the pipe?
you drop a 1.8 kg textbook to a friend who stands on the ground 12 m below the textbook with outstretched hands 1.50 m
two speakers one directly behind the other are each generating a 235-hz sound wave. what is the smallest separation
A steel wire of length L with a cross-sectionaldiameter d is wrappedover a light frictionless pulley, How much will the wire stretch while the massesare moving
The spring is compressed against the floor a distance 2.5 cm and released. If the spring constant is 119 N/m, illustrate what is the magnitude of the spring force acting on the toy at the moment it is released?
Design a circuit in which the output voltage leads the input voltage by 30° and the current by 90°. The input voltage is a cosine wave with an angular frequency of ?. You must show (1) the phasor diagram (2) the circuit (3) the relationship betwee..
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