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Q1. A 36.0 kg uniform beam is attached to a wall with the hinge while its far end is supported by a cable such that the beam is horizontal.
If the angle between the beam and the cable is q = 54.0° what is the tension in cable.
Q2. What is the maximum probable efficiency of the steam engine taking in heat at 100° C (373K) and dumping it at room temperature of about 20° C (293K)? (Efficiency is the ratio of work completed to heat input, or the ratio of temperature decrease to temperature input).
What are the components of displacement vector from camp to summit? What is its magnitude? Decide the x axis east, y axis north, and z axis up.
Imagine that plane reaches the necessary takeoff velocity
The length of an air column that produces a strong resonance in a cylinder is 0.18m, what is the frequency of the tuning fork being used .
A 790-kg object and an 889-kg object are separated by 11.0 m. At what position (from the less massive object) can the 260-kg object be placed so as to experience a net force of 10 N towards the less massive object.
An asteroid is discovered heading straight toward Earth at 13km/s. An international team manages to attach a giant rocket engine to the asteroid. The rocket fires for 10 mins, after which the asteroid is moving at 28 degrees to its original path at a..
The pulley system is used to lift a 52 kg crate. Note that one chain connects the upper pulley to the ceiling and a second chain connects the lower pulley to crate. assume the masses of the chains, pulleys, and ropes are negligible, conclude the forc..
Find out speed of the proton
A microscope with an eyepiece lens of focal length 1.90 cm and an objective lens of focal length 1.15 cm is used to examine a section of the brain of a sacrificed rat. The distance between the lenses of the instrument is 24.0 cm and final image is vi..
Find out the coefficient of static friction
How numerous extra electrons are on this particular oil drop (given the presently known charge of the electron)?
A 79.0 kg man is riding in a shopping mall. The escalator moves the man at constant velocity from ground level to the floor above, the vertical height of 4.40m.What is the work completed on the man by the gravitational force and the escalator.
The lens has a refractive index of 1.30. Find out the difference Δx in the positions where each crosses the principal axis.
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