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A truck is removed from the mud by attaching a line between the truck and the tree. When the angles are 20 degrees at the truck and tree a force of 40 lb is exerted at the midpoint of the line. What force is exerted on the truck?
An Ar+ laser emits radiation at a wavelength of 515 nm, and a power of 7 W. Determine how many argon ions
A 70- kg child sits in a swing suspended with 3.3- m-long ropes. determine the speed the child will have at the bottom of the arc
A capacitor consists of two concentric conducting spherical shells with radii R1 and R2 = 4.0R1. It has capacitance C = 4.0 pF, and is charged to a potential difference of 60.0 V. by what factor does the stored energy change
What is the distance Delta y_max-min between the second maximum of laser 1 and the third minimum of laser 2, on the same side of central maximum.
At the start of his race, an 84-kg runner pushes against the starting block, Determine the horizontal speed of the runner after the force is exerted for 0.32s
Concrete is pumped from a cement mixer to the place it is being laid, instead of being carried in wheelbarrows. Calculate the resistance of the hose
A propeller is modeled as five identical uniform rods extending radially from its axis. what is its rotational kinetic energy
A 16.0 kg wheel, essentially a thin hoop with radius 1.70 m, is rotating at 426 rev/min. It must be brought to a stop in 11.0 s. How much work must be done to stop it
An AC generator supplies an rms voltage of 115 V at 60.0 Hz. It is connected in series with a 0.350 H inductor, a 3.10 ?F capacitor and a 256 ? resistor. What is the peak voltage across the inductor
After a completely inelastic collision, two objects of the same mass and same initial speed are found to move away together at 1/2 their initial speed
a partice moves along the path y=-0.090x^6(-7)meters with a constant speed of 4 m/s. assume dx/dt>_0. Determine the cartisian components of velocity and acceleration at x= - 2m
A large positively-charged object with charge q = 3.75 ?C is brought near a negatively-charged plastic ball suspended from a string of negligible mass. what is the angle the string makes with the vertical
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