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A helium balloon lifts a basket and cargo weighing 1500. N understandard conditions. What is the minimun volume of the balloon? Use1.29 kg/m3 for density of air and 0.178 kg/m3 for density of helium.
A 50cm long non-conducting cylinder of radius 4cm has a volume charge density of 30 uC/m^3. A grounded conducting cylindrical shell of radius 6cm is placed concentrically around the charged cylinder.
determine the r value for a wall constructed as follows the outside of the house consists of lapped wood shingles
You are trying to advance your shooting skills by shooting at a can on top of a fence post. You miss the can, and the bullet, moving at 207 m/s, is embedded 1.54 cm into the post when it comes to a stop. If constant acceleration is assumed, how long ..
Three point charges, -6.2 x 10-9 C, -8.7 x10-9 C, and +7.9 x 10-9 C, are fixed atdifferent positions on a circle. The total electric potential atthe center of the circle is -1900 V. What is the radius of the circle?
two strings with linear densities of pullyes and attached to hanging blocks. both strings have same frequency what is
a sled is resting on packed snow. the coefficient of kinetic friction is now only 0.12. if a person weighing 650 N sits on the sled, what force is needed to pull the sled across the snow
How much thermal power is radiated by a light bulb when its filament is heated to 200k? Assume that the filament is a blackbody of area 1.0 cm2, At what wavelength is the radiation peaked
A large grinding wheel in the shape of a solid cylinder of radius 0.330 m is free to rotate on a frictionless, vertical axle. What is the mass of the wheel
A model rocket fired vertically from the ground ascends with avertical acceleration of 3.6m/s2 for 5.0 s. Its fuel isthen exhausted, so it continues upward as a free-fall particle and then falls back down.
A continuous stream of electrons flows along a long straight paththrough a piece of laboratory equipment: 5.750e+18 ofthem pass through the equipment each second. What is the strengthof the magnetic field created by this stream at a distance of0.250 ..
A projectile is launched at ground level with an initial speed of 50.0 m/s at an angle of 30.0º above the horizontal. It strikes a target above the ground 3.00 seconds later. What are the x and y distances from where the projectile was launched to..
A stationary block of mass M - m is struck by a bullet of mass m traveling at speed v0. During the impact, obtain the speed of the block
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