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Construction cranes are able to balance heavy loads by using a counterweight. The crane operator can slide the entire torque arm horizontally in order to balance the load. If the torque arm has a total length of 56m and a mass of 750 kg, and the counterweight has a mass of 2500 kg, where should the operator position the pivot point to balance a 860 kg object?
A 7.1-kg block of aluminum is heated from 30°C to 60°C at atmospheric pressure. Find the work done by the aluminum
A computer can fetch information from the memory in 3.0 ns, a process that involves sending a signal from the Central Processing unit (CPU) to memory and awaiting return of the information. find the maximum distance between the CPU and the memory
X rays diffract from a crystal in which the spacing between atomic planes is 0.200nm. What is the angle of the first-order diffraction
An airplane is flying in a horizontal circle with constant speed. In this situation, what is performing a harmonic oscillation
A cylindrical copper cable carries a current of 1380 A. There is a potential difference of 1.6 10-2 V between two points on the cable that are 0.21 m apart. What is the radius of the cable
A 6.4 kg freight car is coasting at a speed of 46.3 m/s along a straight track when it strikes a 15.8 kg stationary freight car and couples to it. What will be their combined speed after impact
You are designing a delivery ramp for crates containing exercise equipment. Calculate the maximum force constant of the spring that can be used in order to meet the design criteria
q. a certain toaster has a heating element made of nichrome resistance wire. when the toaster is first connected to a
One end of a stretched string is moved transversely at constant velocity Vy for a time T, Calculate the kinetic and potential energy energies associated with the pulse
What is the normal force that the incline exerts on the block. find the acceleration of the block.
In an attempt to reduce the extraordinarily long travel times for voyaging to distant stars, some people have suggested traveling at close to the speed of light. How fast must the rocket travel relative to earth
The potential difference across a coil is 2.93V at an instant when the current is 347mA, changing at a rate of 327mA/s. At a later instant, What is the inductance of the coil
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