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A steel section of the Alaskan pipeline had a length of 65 meter and a temperature of 12°C when it was installed. Compute what is its change in length when the temperature drops to a frigid -43°C?
If the velocity of a 3.0 kg body changes from v1= (3.0î , 5.0j) m/s to v2= (0î, 7.0j) m/s in a time interval of 2.0s. What is the impulse delivered to the body
A cruise ship sails due north at 4.00 m/s while a coast guard patrol boat heads 42.0° north of west at 5.00 m/s. What are the x- and y-components of the velocity of the cruise ship relative to the patrol boat?
The mean distance between earth and the sun is 1.50 x 1011 meter. evaluate the total power radiated by the sun
Two men decide to use their cars to pull a truck stuck in mud. What is the net forward force exerted on the truck in the direction it is headed
A hydrulic jack in a mechanic's shop supports a car of mass M= 2.1 x 10^3 kg. What force must the pump exert on the fluid at the input to support the weight of the car
If the breakers at a beach are separated by 6.0 m and hit shore with a frequency of0.28 Hz, with what speed are they traveling
A circular disk with a radius of 0.65 meters and mass of 0.26 kg has a hole cut in the middle.
A dolphin in an aquatic show jumps straight up out of the water at a velocity of 14.5 m/s. How high does his body rise above the water in meters
A thin uniform rod (length = 2.01 m, mass = 3.11 kg) is pivoted about a horizontal frictionless pin through one of its ends. What is the angular acceleration of the rod at the instant it is released
A rotating wheel requires 3 s to rotate 37 revolutions. Its angular velocity at the end of 3 s interval is 98 rad/s. What is the constant angular acceleration for the wheel
In the ground state of the hydrogen atom, the electron has a total energy of -13.6 eV, Determine its potential energy if the electron is a distance 16a from the central nucleus? Here a is the Bohr radius
A ball of mass 0.120 kg is dropped from rest from a height of1.25 m. What impulse was given to theball by the floor
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