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A hot air balloon has a volume of 2.00 × 103 m3 when fully inflated, and the air inside the balloon is always at atmospheric pressure of 1.01 × 105 Pa because of the large opening used to fill the balloon and heat the air inside it. What is the mass of hot air inside the balloon if its temperature is 120°C? The universal gas constant is 8.314 J/mol K. (Assume a molecular weight of 28.8 g/mol for air.) please explain how to do this w/ formulas.
q1. a school yard teeter totter with a total length of 6.0 m and a mass of 36 kg is pivoted at its center. a 19 kg
So you have two different systems both equal contained in a case with the same volume and area. Both cases are in two separate rooms of the same area and volume. Which room is has a higher peak temperature
To make a bounce pass, a player throws a 0.60-kgbasketball toward the floor. find the magnitude of the impulse delivered to it by the floor
for an initial velocity of 15 m/s and a launch of 55 degrees, where will the projectile strike the side of the hill
A bicycle racer sprints at the end of a race to clinch a victory. The racer has an initial velocity of 13.0 m/s, What is his final velocity
At what angle must the cannon be fired
A cart of mass 1.8kg rolls without friction on a track. At point A the cart is moving at 6.0m/s. What work was done by friction
A hypodermic syringe is attached to a needle that has an internal radius of 0.304 mm and a length of 3.05 cm. What force must be applied to the plunger, which has an area of 1.05 cm2
An ideal solenoid has a field of magnitude 0.10 T when carrying a current of 200 A. The solenoid is 5.0 m long. What is the number of turns for the coils of the solenoid
A poor artist might approximate a flower as a series of radial lines and circular arcs. What is the direction of the magnetic field
A current of 10^-14 A is produced in a free-air chamber operating under saturation conditions. The sensitive volume, in which electronic equilibrium exists, contains 0.22g of air. What is the exposure rate .
q1. to evaluate the program suppose she runs up a flight of 85 steps each 0.150 m high in 69.0 s. for simplicity ignore
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