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suppose that a 70.0kg box is pulled by 400N firce at an angle of 30 degree to the horizontal. The coefficient of sliding friction is 0.500. find the acceleration of the box?
Suppose that an ion source in a mass spectrometer produces doubly ionized gold ions (Au2+), each with a mass of 3.27e-25 kg. Determine the radius of the path
A m = 1.30-kg block is pushed against a spring with negligible mass and force constant k = 580 N/m, How far does the object travel up the incline before starting to slide back down
Find the power delivered by the good battery, and discuss where this power goes, assuming that the emf's and resistances of each battery remain the same throughout the process
A car is traveling around a horizontal circular track with radius r = 190.0 m as shown. It takes the car t = 59.0 s to go around the track once. What is the magnitude of the car's acceleration
Show that the SI units for Planck's constant (h) are equal to the SI units of angular momentum. Calculate the magnitude of the Bohr radius
Two wires are identical, except that one is silver (resistivity = 1.59×10-8 ?·m) and the other is platinum (resistivity = 1.06×10-7 ?·m). What is the resistance of the platinum wire
Six artificial satellites complete one circular orbit around a space station in the same amount of time. Each satellite has mass and radius of orbit. The satellites fire rockets that provide force needed to keep a circular orbit around the space stat..
A 250g , 49.0 cm diameter turntable rotates on frictionless bearings at 60.0 rpm. What is the turntable's rotation angular velocity when the block reaches the outer edge
At t = 0, an automobile travelling north begins to make a turn. It follows one-quarter of the arc of a circle of radius 10.70 m until, at t = 1.60s, it is travelling east. The car does not alter its speed all through the turn.
A basketball player makes a jump shot. The 0.607 kg ball is released at a height of 1.97 m above the floor with a speed of 7.22 m/s, What is the work done on the ball by air resistance
The density of water is 1000kg/m^3 or 8.33lbm/gallon, the mass flow rate is 494838.83 kg/s and goes through a turbine generator that has 0.80 efficiency
Water (viscosity = 1centipoise) flows through a cylindrical plug in a laboratory experiment. what is the permeability of the sample in cm^(2)
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