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A hot-air balloon is accelerating upward under the influence of two forces, its weight and the buoyant force. For simplicity, consider the weight to be only that of the hot air within the balloon, thus ignoring the balloon fabric and the basket. The hot air inside the balloon has a density of ?hot air = 0.94 kg/m3, and the density of the cool air outside is ?cool air = 1.29 kg/m3. What is the acceleration of the rising balloon?
If that angular acceleration is 1.8rad/s^2, illustrate what is the total momentum of inertia about the axis of you and the chair?
A glider of mass 1.00 kg is allowed to oscillate under the influence of a spring of spring constant 25.6 N/m while on a frictionless, horizontal air track. At t = 0 s glider is released from rest at x = 5.00 cm. (At equilibrium, the glider is at x = ..
A 109-rad dose of radiation is administered to a cancer patient (mass = 73) kg). how much energy is absorbed
The Large Hadron Collider, or LHC, to be completed later this year, accelerates protons around a nearly circular track of circumference 26.66 km to a momentum of up to 3.74e-15 kg m/s, For the same magnetic field as in part (a), what is the momentu..
Consider a flagpole (mass 20kg and length 10m) attached to the wall by a cable, What is the magnitude and direction of the force exerted by the hinge on the flagpole
A loudspeaker in a parked car is producing sound whose frequency is 20680 Hz, what is the minimum speed of the moving car
Determine the magnitude of the total initial momentum of the two-block system. Find , the magnitude of the final velocity of the two-block system. What is the change in the system's kinetic energy due to the collision?.
find the childs speed at the lowest point.An elevator has mass 610 kg, not including passengers. The elevator is designed to ascend, at constant speed, a vertical distance of 20.0 m (five floors) in 17.0 s and it is driven by a motor that can provi..
The height of a helicopter above the ground is given by h = 3.00 t3, where h is in meters and t is in seconds. After 2s, the helicopter releases a small mailbag. How long after its release does the mailbag reach the ground.
What are the components of the ships displacement
Now a peg is placed 4/5 of the way down the pendulum's path so that when the mass falls to its vertical position it hits and wraps around the peg. As it wraps around the peg and attains its maximum height it ends a distance of 3/5 L below its startin..
A disk of radius 3.00 cm has a uniformly distributed charge of Q = 5.20 uC, Calculate the electric field on the perpendicular axis of disk
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