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You are in a hot air balloon (yes, another balloon problem!) rising from the ground at a constant velocity of 2.70 m/s upward. To celebrate the takeoff, you open a bottle of champagne, expelling the cork with a horizontal velocity of 4.00 m/s relative to the balloon. When opened, the bottle is 4.90 m above the ground.
How long does the cork remain in the air?
Two identical conducting spheres, fixed in place, attract each other with an electrostatic force of -0.6020 N when separated by 50 cm, center-to-center.
Two runners of mass 70kg and 60kg, respectively, have a total linear momentum of 350 kg•m/s. The heavier runner is running at 2.0 m/s. Determine the likely speeds of the lighter runner.
What least horsepower must a motor have to be able to drag a 280 box along a level floor at a speed of 1.05 if the coefficient of friction is 0.50.
A bag of blood with a density of 1050 kg/m^3 is raised about 1.00m higher than the level of a patient's arm. How much greater is blood pressure at the patient's arm than it would be if the bag were at the same height as the arm.
find the ambulance's speed from these observations.
Find the slit width. compute the coefficient of kinetic friction between the slide and the child.
The box is open at the top and has edge length L = 66 cm. Find out (a) the x coordinate, (b) the y coordinate, and (c) the z coordinate of the center of mass of the box.
Find the average force of the water on the diver. The swimmer comes to a stop 4 m below the surface. Find the average net force acting on the diver as coming to a stop in the water.
A chartered airplane flies 100 km east, then 350 km northwest, and then 150 km at 30° west of south. Find the magnitude of the last leg of the journey
A 480g , 8.00-cm-diameter solid cylinder rolls across the floor at 1.50m/s. What is the can's kinetic energy
A child ties a rock to a string and whirls it around in a horizontal circle. Find the period of its uniform circular motion
It's possible to estimate the percentage of fat in the body by measuring the resistance of the upper leg rather than the upper arm, What are the fractions of muscle and fat in the leg
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