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A helicopter blade spins at 115 revolutions per minute. Its tip is 7.00 m from the center of rotation.
(a) Calculate the average speed of the blade tip in the helicopter's frame of reference.
(b) What is its average velocity over one revolution?
A large plastic block has a net charge of -1.0mC. How many more electrons than protons are in the block
The filament in an incandescent light bulb is made from tungsten. The light bulb is plugged into a 120 V outlet, determine how long must the wire be
A steel ball bearing 8.0 mm in diameter is dropped into a cylinder of glycerin. What is the terminal velocity of the ball bearing
A circuit contains six 240 ohm lamps with 60 W bulbs and a 10 ohm heater connected in parallel. the voltage across the circuit is 120 V. If the circuit has a fuse rated at 12 A, would it melt if everything is on.
A double prism is made by joining two thin glass prisms of different refractive index such as crown glass and flint glass, Determine the prism angle of the crown prism
Three spheres, each with a negative charge of 4.0 X 10^-6 C, are fixed at the vertices of an equilateral triangle whose sides are 0.20 m long. Compute the magnitude and direction of the net force on each sphere.
Both an alpha particle and an electron are placed in a capacitor that is .0015 m wide (opposite plates. estimate the potential difference between the plates
An experimenter bombards a target of 54Cr with alpha particles such as 4He + 54Cr -> p+ 57Mn Suppose the incoming alpha particle has 26MeV kinetic energy in the lab, What is the kinetic energy of the detected proton
What is the gauge pressure (in kPa) of the air in the tires when its temperature rises to 26.5°C and its volume increases to 1.70 x 10-2 m3? Assume atmospheric pressure is 1.01 x 105 Pa.
the supersonic aircraft concorde has a length of 61.5m when sitting on th ground on a typical day when the temperature is 15.0 degrees C. what is the temperature of the concordes skin in flight
An 8.00-mH inductor and a 2.00ohm resistor are wired in series to an ideal battery. A switch in the circuit is closed at time 0, at which time the current is 0. determine the time constant for the circuit
the longitudinal vibrations of a bridge are to be modeled as a single-degree-of-freedom system. the mass of the bridge
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