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Calculate the internal energy of one mole of helium gas at a temperature of 260K. Assume ideal gas behavior.
A step-down transformer has 2000 turns on the primary and 300 turns on the secondary, what is the secondary voltage amplitude
10 A of current flows through a wire oriented perpendicular to a magnetic field strength of .2T, What is the magnetic force per unit length on the wire?
A hot-air balloon is accelerating upward under the influence of two forces, its weight and the buoyant force. What is the acceleration of the rising balloon
Two friends, Barbara and Neil, are out rollerblading. With respect to the ground, Find Neils velocity direction relative to due west
a snowboarder that weighs 80 kg starts from rest at the top of the hill with a downward slope of 30 degrees from the horizontal. What is the coeffient of kinetic friction
A block of mass m = 4.2 kg, moving on a frictionless surface with a Vi=2.9m/s speed makes a perfectly elastic collision with a block of mass M at rest. After the collision, the 4.2 block recoils with a speed of 0.9m/s. The mass M is closest to.
An object is viewed through a 35 cm thick tank of water (n=1.33) at an angle of 30 degrees from parallel to the tank surface. what is the apparent displacement the object from its actual location
Determine the moment of inertia for three children weighing 64.0 lb, 43.0 lb and 83 lb sitting at different points on the edge of a rotating merry-go-round, which has a radius of 12 ft.
A space probe is launched from Earth, headed for deep space. At a distance of 15,000 miles from the Earth's center, the gravitational force on it is 800 lb. What is the size of the force when it is at 30,000 miles from the Earth's center?
Calculate the electric field at the center of a square 53.7 cm on a side if one corner is occupied by a +38.5 µC charge and the other three are occupied by -29.4 µC charges.
Three uniform spheres are located at the corners of an equilateral triangle. find the magnitude of the initial acceleration of the third sphere
An 8.70-kg block slides with an initial speed of 1.51 m/s up a ramp inclined at an angle of 27.4 degrees with the horizontal. calculate the distance the block slides before coming to rest.
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