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A uniform beam is 5.0 m long and has a mass of 65 kg. In the figure below, the beam is supported in a horizontal position by a hinge and a cable, with angle θ = 55°. In unit-vector notation, what is the force on the beam from the hinge
A 2.4kg toy locomotive is pulling a 1.6kg caboose. The frictional force of the track on the caboose is 0.54N backward all along the track. If the train is accelerating forward at 3 m/s2, what is magnitude of the force exerted by the locomotive on ..
A vertical straight wire carrying an upward26-A current exerts an attractive force per unit length of 7.3×10?4N/m, What is the direction of the current in the second wire?
A mass hanging from a spring can oscillate in the vertical direction or can swing as a pendulum of small amplitude, however not both at the same time. Which one is longer, the period of the vertical oscillations or the period of the horizontal swings..
The 1994 Winter Olympics included the aerials competition inskiing. In this event skiers speed down a ramp that slopes sharplyupward at the end. The sharp upward slope launches them into theair, where they perform acrobatic maneuvers.
If E decreases (becomes more negative), the radius r of the orbit will decrease. If air drag is relatively small, the satellite can be considered to be in a circular orbit of continually decreasing radius.
The second-order dark fringe in a single-slit diffraction pattern is 1.40 mm from the center of the central maximum. Calculate the wavelength of the incident light
A chain consisting of five links, each of mass 0.120 kg, is lifted vertically with a constant acceleration of a = 4.3 m/s2. Find the magnitude of this force
A dockworker loading crates on a ship finds that a 18-kg crate, initially at rest on a horizontal surface, Find the coefficients of static and kinetic friction between crate and floor
The average power dissipated in a 47-? resistor is 2.5 W. What is the peak value I0 of the ac current in the resistor
A particle of mass m in an infinite well has its initial wavefunction ψ (x,0) = A[ψ1(x) +ψ3(x)] where ψ1(x) and ψ3(x) are stationary states. The boundaries of the well are x = 0 and x = a.
a spaceship enters the solar system moving toward the sun at a constant speed relative to the sun. by its own clock the
Two protons at rest and separated by 3.00 mm are released simultaneously. What is the speed of either at the instant when the two are 11.00 mm apart
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