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Two tugboats pull a disabledsupertanker. Each tug exerts a constant force of 1.55 x 106 N,one 20° west of north and theother 20° east of north, as theypull the tanker 0.85 km toward thenorth. What is the total work they do on the supertanker?
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A machine in the factory operates from 12 V. To operate from a 240 V line, What would the voltage output be if the transformer were connected backward
Each driver has a mass of 60.00 kg. Including the drivers, the total vehicle masses are 880 kg for the car and 4080 kg for the truck. The collision time is 0.120s. select coordinates such that the truck is initially moving in the positive x direction..
A copper bar 2.5 m long has a circular cross section of radius 2 cm. One end is kept at 80oC, what is the temperature gradient along the length of the bar
a vertical cylinder of cross-sectional area 0.06 m2 is fitted with a tight-fitting friction- less piston of mass 5.4
The membrane surrounding a living cell consists of an inner and an outer wall that are separated by a small space. What is the magnitude of the electric field within the cell membrane
a point mass, initially at rest, is released at a distance of 1.5e10m from the center of a neutron star whose mass is 3e30 kg. What is the initial acceleration of the point mass
Jane, looking for Tarzan, is running at topspeed (6.7 m/s) and grabs a vine hanging vertically from a talltree in the jungle. How high can she swing upward
An airplane is flying with a velocity of 93.0 m/s at an angle of 25.0 degrees above the horizontal, How far from the dog will the suitcase land in m
A mass hangs on the end of a massless rope. The pendulum is held horizontal and released from rest. When the mass reaches the bottom of its path it is moving at a speed v = 2.4 m/s and the tension in the rope is T = 15.1 N.
two charged concentric spheres have radii of 9.6 and 15.1 cm. the charge on the inner sphere is 4.09 multiplied by 10-8
Two resistors are connected in a series to a 15V battery. The voltage drop across the first resistor is 3.5V, What is the resistance of the two resitors
question when 92.8 v is applied across a wire that is 9.8 m long and has a 0.32 mm radius the magnitude of the current
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