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A railroad flatcar is loaded with crates having a coefficient of static friction 0.25 with the floor. If the train is moving at 20 m/s, in how short a distance can the train be stopped without letting the crates slide?
Mercury is poured into a U-tube. The left arm of the tube has cross-sectional area A1 of 10.4 cm2, Determine the length of the water column in the right arm of the U-tube
An object of mass b has a speed that changes with distance d according to v = bx^-n. What is the force as a function of time
An object, of mass m = 2 kg, is located between two massless springs on a frictionless incline of 30o . Initially the object is held at a position where the lower spring (k1= 950 N/m), Determine the maximum compression of the upper spring
In Chapter 10 in the textbook, we saw that the Achilles tendon will stretch and then rebound, storing and returning energy during a step. What is the spring constant of her Achilles tendon
A 6.03-g bullet is moving horizontally with a velocity of +342 m/s, where the sign + indicates that it is moving to the right (see part a of the drawing). What is the velocity of the second block after the bullet imbeds itself
The refractive index n of glass depends on the color (wavelength) of the light passing through it. What is the angle between the blue beam and the red beam in the glass block
A 9.0-V battery is connected to a bulb whose resistance is 2.7Ω. How many electrons leave the battery per minute
A solid sphere of mass 2.5 kg and a radius 0.15m starts from rest at the top of the a ramp inclined 15 degrees, What is the total kinetic energy of the sphere when it reaches the bottom of the ramp
A tank, full of liquid of depth h, and top surface area A, is at rest on a frictionless table. Find the radius of the hole in terms of the h, k, ?, x, and g the acceleration of gravity
A rifle is aimed horizontally at a target 50 m away. The bullet hits the target 2.0 cm below the aim point. What was the bullet's speed as it left the barrel
During an acceleration, the angular speed of an engine increases from 850 rpm to 2750 rpm in 4.4 s. What is the average angular acceleration of the engine
An object of mass 126.309172 g executes SHM with an amplitude of 12.426183 cm, Find the force acting on the object at time 1.487176 s
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