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A bridge is constructed of a material that is known to expand 0.1 cm for eeach meter in length when subjected to a temperature increase of 10 C. The bridge is measured on a winter day at -10 C and found to be 350 meters long. How much wil the bridge have expanded if it is measured on a summer day at 35 C?
An incompressible fluid flows steadily through a pipe that has a change in diameter. The fluid speed at a location where the pipe diameter is 8 cm is 1.28 m/s. What is the fluid speed at a location where the diameter has narrowed to 4.00 cm.
A 50.0-g object is attached to a horizontal spring, What is the velocity of the object when it is halfway to the equilibrium position if the surface is frictionless
A 50-kg parachutist falls from a height of 2000 m to the ground. Her final speed is 4 m/s. what is the total work done on her
A 10 capacitor initially charged to 30 is discharged through a 1.2 resistor. How long does it take to reduce the capacitor's charge to 7.
You want to take a full-length photo of your friend who is 1.80{\rm m} tall, using a 35.0{\rm mm} camera having a 50.0{\rm mm} lens. How far is the lens from the film
when released from rest from this spot, the particle arrives at B with twice the speed it previously had, or 2vB. Find out the potential at B.
An object has a total energy of 5.60 × 1015 J and a kinetic energy of 1.40 × 1015 J. find the magnitude of the object's relativistic momentum
The femur is a bone in the leg whose minimum cross-sectional area is about 3.60 multiply.gif 10-4 m2. Find the maximum stress that this bone can withstand
A 1.80 m length of wire is held in an east-west direction and moves horizontally to the north with a speed of 14.9 m/s. Calculate the induced emf between the ends of the wire
Problem on a hare and a tortoise battle
A juniper-wood plank measuring 0.36 ft by 1 ft by 15 ft is totally submerged in water. What is the size and the direction of the net force on it
A brave but inadequate rugby player is being pushed backward by an opposing player who is exerting a force of 800 N on him. What force does the winning player exert on the ground to move forward if his mass plus equipment is 110 kg
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