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An iron tower in is 324 meters tall on a cold day (T = -6.9 degrees Celsius). What is the final height (total)of the tower on a hot day when the temperature is 33 degrees Celsius? Record your answer to two decimal places.
A railroad car of mass 25,000 kg is moving with a speed of 5.50 m/s. It collides and couples with three other coupled railroad cars, each of the same mass as the single car and initially at rest.
A merry-go-round is stationary. A dog is running on the ground just outside its circumference, moving with a constant angular speed of0.695rad/s. After what time will the dog reach the bone
A 100 g bullet is shot into a 1 kg sphere of wood, where it sticks. What is maximum initial speed the projectile can have
the density of ice is 917 kgm3 and the density of sea water is 1025 kgm3. a swimming polar bear climbs onto a piece of
A 54.0 kg ice skater is moving at 3.96 m/s when she grabs the loose end of a rope, the opposite end of which is tied to a pole. She then moves in a circle of radius 0.803 m around the pole. Decide the force exerted with the horizontal rope on her arm..
A particle with charge -1.00 C initially moves at v = 1.00i +7.00j m/s. If it encounters a magnetic field B = 60.0 k T, find the force on the particle
What photon energy (eV) is required to excite the hydrogen electron in the innermost (ground state) Bohr orbit to the first excited orbit?
Variations in the resistivity of blood can give valuable clues about changes in various properties of the blood. What is the blood resistivity
how does the use of h ii regions to find a galaxys distance differ from the use of cepheid variables? in question 4
A mother sees that her child's contact lens prescription is +0.750 D. What is the child's near point, assuming the contact lens is designed to enable the child to see objects 25.0 cm away clearly?
A fuel tank explodes, ripping the container into two pieces of masses 30 kg and 11 kg, What was the energy released by the explosion
When it is burned, 1 gallon of gasoline produces 1.30×108 of energy. A 1300 car accelerates from rest to 36.0 in 10.0. How many gallons of gasoline does the car use during its acceleration
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