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A balloon is filled with 4.50 liters of helium at a pressure of 1.30 atm and a temperature of 25.0° C.
a) Discover the mass of the helium.
b) Find the acceleration of the balloon if the rubber has a mass of 4.00 g.
c) Discover the buoyant force on the balloon if it is placed in the atmosphere with air pressure at 1.00 atm and temperature at 24.5° C.
A 40.0 ball of clay travelling east at 6.00 collides and sticks together with a 20.0 ball of clay travelling north at 5.00. What is the speed of the resulting ball of clay.
An aircraft weighing 892 N is accelerated at 9.9 m/s/s for 5 seconds, What is the force required to launch the aircraft
Unpolarized light with an average intensity of 750.0W/m2 enters a polarizer with a vertical transmissionaxis. What is the orientation angle of the second polarizer relative to the first one
A 1 kg wheel (hoop) rolls 5 rev. across a horizontal surface (without slipping)a distance of 3.2 m. if the wheel rolls for 3 sec. determine the angular velocity of the wheel
A double slit is opposite the center of a 1.7-m wide screen 2.3 m from the slits. The slit separation is 24 µm and the width of each slit is 7.2 µm. How many fringes are visible on the screen if the slit is illuminated by 590-nm light?
the electrical device whose symbol is show above circle requires a terminal voltage of 12 volts and current of 2
A 1.80-kg monkey wrench is pivoted 0.250 m from its center of mass and allowed to swing as a physical pendulum. What is the moment of inertia of the wrench about an axis through the pivot.
most species of fish have expandable sacs commonly known as swim bladders that enable fish to rise in the water by
Two boys are sliding toward each other on a frictionless, ice-covered parking lot. Jacob, mass 45 kg, is gliding to the right at 7.67 m/s, What is their velocity immediately there after
The hydraulic piston/cylinder system has a cylinder diameter D = 0.1 meter with a piston and rod mass of 25 kg. The road has a diameter of 0.01 m with an outside atmospheric pressure of 101 KPa. The inside hydraulic pressure is 250 KPa. How large a f..
while walking between gates at an airport you notice a child running along a moving walkway. estimating that the child
A 27 pound meteorite struck a car, leaving a dent 20 cm deep in the trunk. what was the magnitude of its deceleration, assuming it to be constant
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