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A light spring with a force constant of 13N/m is connected to a wall and a 1.2-kg toy bulldozer. When the electric motor in the bulldozer is turned on, it stretches the spring for a distance of 0.45 m before its tread begins to slip on the floor.
A) Which coefficient of friction (static or kinetic) can be determined from this information? Explain.
B) What is the numerical value of this coefficient of friction?
The below cylinder has a 3.00 inch bore, 1.00 inch rod and a 40.00 inch stroke, what force will the cylinder rod exert after the cylinder extends
A 400lb woman stands on a floor in flat soled shoes. Which person is more likely to dent the floor
You are driving home from school steadily at 94 km/h for 150 km. It then begins to rain and you slow to 63 km/h. You arrive home after driving 3 hours and 30 minutes. How far your hometown from school and what is was your average speed.
A sinusoidal force with an amplitude of 1.70 N drives the system. At what frequency will the force make the object vibrate with an amplitude of 0.440 m
Jerry applies a force of 155 N to the propeller. The distance of the from where the force was applied to the axis of rotation is 1.19 m. What is the torque on the propeller
The transformer supplying power to an artist's light sculpture provides 9600-V AC when supplied by 120-V AC. how many turns are there in its secondary coil
q1. a toroidal solenoid has a mean radius of 11.0 cm and a cross-sectional area of 5.00 cm2 and is wound uniformly with
Monochromatic light with wavelength 570nm passes through a circular aperture with diameter 7.00?m. What is the diameter of the Airy disk on the screen
I hold a flat mirror 24.6 cm in front of my face. There is a freckle on my face 1 mm in diameter. Find the angular size of the freckle on the image of my face as viewed by my eye
A daredevil on a motorcycle leaves the end of a ramp with a speed of 30.5 m/s, what is the maximum height that he reaches
astronauts use a centrifuge to simulate the acceleration of a rocket launch. the centrifuge take 20.0 seconds to reach top speed, what is the astronauts tangential acceleration during the first 20.0 s
A grindstone of a radius 4 m is firstly spinning with a radius of 8 rad/s. The angular speed is then increased to 12 rad/s over next 4.0 seconds. Suppose that the angular acceleration is constant. What is the average angular speed of grindstone.
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