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A 2.0-m-long, 22-kg ladder is resting against a house wall, making a 32 angle with the vertical wall. The coefficient of static friction between the top of the ladder and the wall the coefficient is 0.00.
- Determine the minimal coefficient of static friction between the ladder feet and the ground needed for the ladder to stay in rest.
-Determine the magnitude of the normal force of the wall on the ladder.
-Determine the magnitude of the normal force of the floor surface on the ladder.
-Determine the magnitude of the force of friction between the floor and the ladder.
An airplane propeller is rotating at 1250 rpm It takes 4.27×10^-3 s to turn through 32 degrees. At 201 rpm, what is the period of the propeller in seconds
A Norwich MCE student is involved in a crucial out of class experiment. He is in his dorm room 34 feet above an historic rock wall. Describe the final result and state any assumptions that you need to make. Would the final result be any different o..
A solid block is attached to a spring scale. When the block is suspended in air, the scale reads 23.3 Newton; when it is completely immersed in water, the scale reads 16.8 Newton. Estimate what is the density of the block
q1. black holes are suspected while a visible star is being noticeably pulled by an invisible partner that is more
A U tube is filled with water, and the two arms are capped. The tube is cylindrical, and the right arm has twice the radius of the left arm. The caps have negligible mass, are watertight, and can freely slide up and down tube.
hen it crashes into a bridge support that does not move, a car goes from 110km/h to 0 in 1.23 m. What is the impulse delivered to the 70-kg driver by the seat belt, assuming the belt makes the driver's motion identical to the car's motion
a damped harmonic oscillator consists of a block m 2.00 kg a spring k 10.0 nm and a damping force the is linearly
A particular space tether is a wire made from aluminum (resistivity 2.7e-8 omega•m, density 2700 kg/m3). Obtain what power is produced by the tether's motion through the magnetic field
Two identical point charges are fixed to diagonally opposite corners of a square that is 0.420 m on a side. How much work is done by the electric force
Light rays in a material with index of refrection 1.25 can undergo total internal reflection, Find this material's index of refraction when the required critical angle is 67.9°
If the frequency of oscillation of the wave emitted by an FM radio station is 101.4 MHz, calculate the wave's period of vibration
A large balloon of mass 222 kg is filled with helium gas until its volume is 335 m3. Assume the density of air is 1.29 kg/m3 and the density of helium is 0.179 kg/m3. Calculate the buoyant force acting on the balloon
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