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A 34.1 kg child rides a Ferris wheel whose diameter is 18.3 m. When the ride is turning at a constant rate, the child's speed has a constant value of 4.23 m/s. Find the normal force the seat exerts on the child at:
a) The top of the ride
b) The bottom of the ride.
An electron is moving at a speed of 1.0 x10^4 m/s in a circular path of radius of 2.1cm inside a solenoid. The magnetic field of the solenoid is perpendicular to the plane of the electron's path. The solenoid has 25 turns per centimeter.
Two crates connected by a rope of negligible mass lie on a horizontal surface. Create A has mass mA and crate has mB. calcuate the tension in the rope connecting the block
A student is reading material written on a blackboard. Her contact lenses have a refractive power of 57.50 diopters; the lens-to-retina distance is 1.750 cm. How far (in meters) is the blackboard from her eyes
four charges, q1=1.5 nC, q2=4nC, q3=20nC and q4=-1nC are placed so that q4=(0,0) q1 is north of q4 and .5m away q2 is east of q4 and 1.0m away q3 is SW of q4 at angle of 36.9 degrees
Radioactive isotopes are often introduced into the body through the bloodstream. If the decay rate in the thyroid 24.0 d later is actually measured to be 17.0Bq , what percent of the tracer went to that gland
A 24.00 kg child is on a swing that hangs from 1.6-m long chains. What is her highest speed if she swings out to a 45° angle.
A bicycle rim has a diameter of 0.65 m and a moment of inertia, measured about its center, of 0.29kg?m2. What is the mass of the rim
Consider a parallel plate capacitor with an area of 2 cm^2 and a plate separation of 0.02 mm which is charged to a voltage of 2 kV. The work function for the electrons in the plate is 3.8 eV. Compare the electron tunneling current when there is a vac..
Water is being pumped 100 meters up a hill through a hose at a rate of .012m^s/s. what is the water pressure at the bottom of the hose
A resistor is connected across the terminals of a 9 V battery, which delivers 1.27E+5 J of energy to the resistor in 8.00 hours
Two blocks are connected by a light but sturdy string wrapped around a mass-less pulley. What is the magnitude N of the normal force on the block of mass m
A 211-? and a 221-? resistor are connected in series across an unspecified power supply, what is the exact current (in A) through the 221-? resistor
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