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A weather balloon has a volume 1.2 m^3 at sea level where the pressure is 101 kPa and the temperature is 20 C. When the balloon rises to an altitude of 11 km, the pressure is down to 50.5 kPa and the temperature is about -55 C. What is the volume of the balloon then?
A wheel rotates without friction about a stationary horizontal axis at the center of the wheel. What is the moment of inertia of the wheel
A load of bricks with mass = 15.4 kg hangs from one end of a rope that passes over a small, frictionless pulley. What is the tension in the rope while the load is moving
An electric field of intensity 3.5*103N/C is applied the x axis. Calculate the electric flux through a rectangular plane 0.35m wide and 0.70m long
Aluminum wiring rated at 30. A maximum current is to be installed in a home. how thick diameter does the wire have to be
The first sled is 30kg, connected with rope B to the second sled of mass 20 kg, connected with rope A to the first sled of mass 10 kg, which is being pulled by a rope of 137 N. Illustrate What is the tension in ropes A and B.
An 84.6-kg climber is scaling the vertical wall of a mountain. His safety rope is made of nylon that, How much is the rope stretched when it breaks his fall and momentarily brings him to rest
A cylindrical air tank has dimensions diameter = 0.2m and height 0.8m, Calculate the mass of air in the tank (kg) (have to use ideal gas law, molecular weight of air)
A 140-W lightbulb connected to a 120-V source experiences a voltage surge that produces 135 V for a moment. By what percentage does its power output increase
A 2.54 kg particle moving along the x-axis experiences the force shown, where Fmax=6.85 N, Fmin=-6.85 N, d1=1.27 m, d2=2.54 m, d3=3.81 m, and d4=5.08 m. At x=0.00 m the particle's velocity is 3.93 m/s. What is its velocity at x=2.54 m?
M1 is five times more massive than M2. One force acts on the hanging mass, but the net force acts on both masses. Once you have the acceleration, you can compute the distance.
A 1.4Kg block and a 2.6kg block are attached to opposite ends of a light rope. what is the acceleration of the lighter block
the coefficient of static friction is 0.26. If you apply the minimum force needed to get the refrigerator to move, illustrate what will the acceleration then be?
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