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Two groups of canoeists meet in the middle of a lake. After a brief visit, a person in canoe 1 pushes on canoe 2 to separate the canoes. Assume the speeds of the two canoes after they are pushed apart are 0.60 m/s for canoe 1and 0.44 m/s for canoe 2.
If the mass of canoe1 is 350 kg, what is the mass of canoe2?
An astronaut on the Mars attaches a small brass ball to a 1.00- length of string and makes a simple pendulum. She times 13 complete swings in a time of 35.4 seconds. From this measurement she calculates the acceleration due to gravity on the Mars.
A stone is thrown horizontally from the roof of a tall building with a speed of 23.3 m/s. If the cliff is 26.5 high and stone lands on level parking lot below, how far from the building will the stone land?
Calculate the magnitude of the angular momentum of the Mars in a circular orbit around the sun. The Mars has mass 6.42×10^23 kg , radius 3.40×10^6 m , and orbit radius 2.28×10^11 m. The planet completes one rotation on its axis in 24.5 hours and one ..
A d = 4.57 mm diameter wire carries an electric current of I = 14.3 A when the electric field is E = 7.53×10-2 V/m along the wire. What is the conductivity of the wire
Compute coefficient of kinetic friction
An undersea research chamber is spherical with an external diameter of 5.40 m. The mass of the chamber, when occupied, is 70400 kg. It is anchored to the sea bottom by a cable.
A picture window has dimensions of 1.40 m×2.50m and is made of glass 5.50mm thick. At what rate is heat being lost through the window by conduction
question1a 48-kg pole vaulter running at 14 ms vaults over the bar. her speed as she is above the bar is 1.3 ms. ignore
A gasoline engine takes in 1.70×10^4J of heat and delivers 3900J of work per cycle. What mass of fuel is burned in each cycle
The body contains many small currents caused by the motion of ions in the organs and cells. how large is the current in the heart
The temperature of the surface of a certain star is 7500K. Most hydrogen atoms at the surface of star are in the electronic ground state. What is the approximate fraction of hydrogen atoms that are in the first excited state (and therefore could e..
A low-friction cart of mass 5.0 kg is attached to the spring, the spring is stretched 1.5 m from its equilibrium length, What is the velocity of the cart at this position
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