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A balloon is filled with 5.45 liters of helium at a pressure of 1.35 atm and a temperature of 24.0° 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 at22.5° C.
c) Discover the acceleration of the balloon if the rubber has a mass of 4.00 g.
A 72.4 man steps off a platform 3.02 above the ground. He keeps his legs straight as he falls, What is the magnitude of the reaction force to the force
A circuit consists of one DC power supply providing 20 V and four resistors R1 = 10 Ohm, R2 = 20 Ohm, R3 = R4 = 40 Ohm. Calculate the total power provided by the power supply
A mass; M, slides down a frictionless incline and then gently transitions into a rough horizontal surface, Determine the speed at the end incline
In the 1930’s acoustic detection systems able to detect anaircraft at a range of 40.0 km were developed in several countries.The aircraft engines generate a sound intensity level of 95.0 dB ata distance of 10.0 metres from the aircraft, what inten..
A flywheel with a moment of inertia of .15 kgm2, is on a motor that puts out 2.4 Nm of torque. How many rotations will the wheel make by the time it reaches a speed of 1500 rpm
question1you encounters a moving walkway that is 91 long and has the speed of 2.1 relative to the ground. how long
A 13.9-kg monkey is hanging by one arm from a branch and swinging on a vertical circle. obtain the magnitude of the tension in the monkey's arm
A wheel 1.50 m in diameter lies in a vertical plane and rotates with a constant angular acceleration of 4.30 rad/s2. find the tangential speed and the total acceleration of the point P
the starting current in a dc motor is 20 a but it normally operates on 110 volts with a back emf of 90 volts. what is
When a body of mass m is moving with a speed v, it has kinetic energy associated with its motion. by what percentage does the kinetic energy increase
john carries one heavy box and kicks the other box so that it slides for a little bit and then stops and he continues
The energies associated with molecular rotation and vibration are quantized and photons can be emitted or absorbed by molecules making transitions from one rotational or vibrational state to another.
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