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A balloon is filled with 4.65 liters of helium at a pressure of 1.10 atm and a temperature of 26.5° C.
a) Discover the mass of the helium.
b) Discover the buoyant force on the balloon if it is placed in the atmosphere with air pressure at 1.00 atm and temperature at20.0° C.
c) Discover the acceleration of the balloon if the rubber has a mass of 4.00 g.
The position of a 2.0 kg mass is given by x = (2t^3 - 3t^2) m, where t is in seconds. What is the net horizontal force on the mass
a show that the function yxt x2 v2t2 is a solution to the wave equation by calculating the following quantities and
A meter stick is freely pivoted about the 20cm mark. Find the frequency of the small amplitude oscillations
A steel-belted radial automobile tire is inflated to a gauge pressure of 30.0lb/in^2, what is the tire's pressure at the elevated temperature
A lawn mower has a flat, rod-shaped steel blade that rotates about its center. What is the rotational energy of the blade at its operating angular speed of 3340 rpm
a quantity of water is poured into a graduated cylinder which then reads 129 ml. what is the mass of the water in
An 18.5 kg box initially at rest is pushed 2.63 m along a rough,horizontal floor with a constant applied horizontal force of87.3509 N. If the coefficient of friction between box and floor is 0.393, findthe work done by the friction.
An airplane is traveling parallel to the ground in a region where the Earth%u2019s magnetic field is oriented perpendicular to the ground. What is the resulting voltage difference between the ends of each wing
A 65kg, 1.70m tall person is standing in a room, Find the air temperature at which the heat transfer rate by radiation is just balanced by the rate of heat generation
A circular wire loop of radius 8.1 m lies in a plane perpendicularto a uniform magnetic field of magnitude 0.4 T. In 0.1 s the wire is reshaped into a square but remains in the same plane.
A 83.0 cm pendulum is released from a small angle. After 109 oscillations the amplitude is one half of its original valu Find the value of the damping coefficient
Two blocks are connected by a frictionless pulley as shown. Block A has a mass of 71 kg and block B has a mass of 150 kg. Find the acceleration a of block A (in m/s2)
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