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When performing an experiment in chemistry with a spectrophotometer to determine a calibration curve for a given substance, what is the real world relevance of the experiment?
The 2500 turn coil in a dc motor has an area per turn of1.9*10-2 m2. What is the current of the coil
Two spheres have a mass of 10 kg and 20 kg respectively. What should be the distance between them such that the force of gravity acting among them is equal to the weight of one of them?
The drag on ball A in fluid Y (extremely expensive and rare) is to be estimated from tests run on ball B in air (fairly inexpensive fluid). Ball A has a diameter of 1 ft and we want to drag it during fluid Y at 80degreeF at 10 ft/s. Ball B has a diam..
if a neutral metal sphere is connected to ground through a wire when a positively charged glass rod comes close to the
You are driving into St. Louis, Missouri, and in the distance you see the famous Gateway-to-the-West arch. This monument rises to a height of 192 m. You estimate your line of sight with the top of the arch to be 4.5° above the horizontal. Approxim..
An arrow is shot with a speed of 18.5 m/s at an angle of 50 degrees from the horizontal. What are the respective horizontal and vertical component of the initial velocity of the arrow?
A dockworker applies a constant horizontal force of 79.0N to a block of ice on a smooth horizontal floor. The frictional force is negligible. The block starts from rest and moves a distance 15m in a time 4.50s. What is the mass.
You are using a grating with 1000 lines per millimeter; the angle for the first order maxima is ? = 17°. Find the angle of the second order maxima
What is the maximum instantaneous power dissipated by a 1.0 hp pump connected to a 240-Vrms ac power source
A car is moving on a flat horizontal circular track of radius 120 m. The speed of the car is constant, 15m/s. The mass of the car is 1200 kg. Ignore air resistance. What force is keeping the car in the circle?
Canadian nuclear reactors use heavy watermoderators in which elastic collisions occur between the neutrons and deuterons of mass2.0 u. What is the speed of a neutron, expressed as a fraction of its original speed, after a head-on
A projectile is fired with an initial speed of 36.7m/sat an angle of 42.1 above the horizontal on a long flat firing range. Decide the total time in the air. Decide the speed of the projectile 1.30s after firing. Decide the maximum height reached by ..
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