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A spherical balloon has a radius of 8.0 m, and is filled with helium. How large a cargo can it lift, assuming that the skin and structure of the balloon have a mass of 900 kg? Neglect the bouyant force on the cargo volume itself.
a rays of light a incident on a glass plate of refracted index 1.536 such that reflected and refracted rays are mutually perpendicular what is the angle of refraction
A light bulb operating at 110 V draws 1.40 A of current. What is its resistance?
A lead bullet initially at 12.4oC just melts uponstriking a target. calculate the speed of the bullet upon impact
A 1 kilogram ball is attached to the end of a 2.5 meter string to form a pendulum. This pendulum is released from rest with the string horizontal. Find the speed of the block just after the collision
The label on a candy bar says 440 Calories. Assuming a typical efficiency for energy use by the body, how high could she go
an athlete who was performing a long jump had a resultant velocity of 8.6 ms and a projection angle of 29deg at
Discuss how a grandfather clock (a pendulum clock), accurate at 20oC, will run fast or slow on a hot day (say, 30oC)?
Water flows straight down from an open faucet. The cross-sectional area of the faucet is 2.2 ×10-4 m2, calculate the cross-sectional area of the water stream at appoint 0.08 meter below the faucet
An LRC series circuit with R= 150 ohms, L= 25 mH and C= 2 mF is powered by an AC voltage source of peak voltage Vo= 340 V, Determine the peak current that flows in this circuit
Find the maximum range of a super cannon that has a muzzle velocity of 4.0 km/s, What is unreasonable about the range you found
(a) What is the speed of flow in the narrow section? m/s (b) What is the pressure in the narrow section? kPa (c) How do the volume flow rates in the two sections compare?
A rifle that shoots bullets at fed m/s is aimed directly at a target 83.2 meter away and level with the rifle. Compute how far below the aiming point does the bullet hit
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