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An 80.0-N box is pulled 20.0 m up a 30 degree incline by an applied force of 100 N that points upwards, parallel to the incline. If the coefficient of kinetic friction between box and incline is 0.220, calculate the change in the kinetic energy of the box.
On a banked race track, the smallest circular path on which cars can move has a radius of 102 m, while the largest has a radius 157 m, Find the smallest and largest speed the cars can remove without the presence of friction
An air track is tilted so that it makes a small angle with the horizontal. What is the magnitude of the acceleration for the air cart
Two parallel, uniformly charged, infinitely long wires carry opposite charges with a linear charge density ? = 3.83 ?C/m and are 5.69 cm apart. What is the magnitude of the electric field at a point midway between them and 54.3 cm above the plane con..
What would be the potential difference VC - VB across the thin resistor if the battery emf is 4.00 volts? Suppose that the electric field in the thick wires is very small (so that the potential differences along the thick wires are negligible)
A builder will use wood for floor support in building a house. The Young's modulus for this wood is 12 x 10^9 Newtons/meter^2. What would be the length of wood joists if the sag is not more than 25ft
two small spheres spaced 20.0 cm apart have equal charge. How many excess electrons must be present on each spere
A resistor and an inductor are connected in series across an AC voltage source oscillating at 60 Hz. What is the rms voltage of the source
The deflection plates in an oscilloscope are 10 cm by 2 cm with a gap distance of 1 mm. A 100 volt potential difference is suddenly applied to the initially uncharged plates through a 950 ohm resistor in series with the deflection plates.
A velodrome track is banked so that a bicycle traveling at 43.5 km/h will have no tendency to slip to either side when traveling on the path that has a radius of curvature of 59.0 m
The first part of the equation was to derive t= integral [1/sqrt((2/m)(E-U(x))] dx Part b is where I got stuck. Suppose U(x) = C/x for x>0.Calculate the time for a particle to move from x0 to 5x0 starting form rest at x0. Leave answer in terms of ..
q1. a swimmer tries to swim straight across a river. he swims at a speed of 0.600 ms relative to the water. the river
A meteoroid is speeding through the atmosphere, traveling east at 21.5 km/s while descending at 19.0 km/s. What is its speed, in km/s.
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