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What do you mean by work? Give the physical significance of work in our uses? Is this useful any where in our lives? Explain in well defined lines
Neptune orbits the sun with an orbital radius of 4.495x10^12m whichallow gases such as methane to condense and form an atmosphere. ifthe mass of the sun is 1.99x10^30kg calculate the period of Neptunes orbit.
A Carnot freezer that runs on electricity removes heat from the freezer compartment, which is at -10.0C and expels it into the room at 27.0C. What is the coefficient of performance of this freezer
A helicopter rises vertically with a constant upward acceleration of 0.38 m/s^2 . As it passes an altitude of 20m , a wrench slips out the door. How soon does the wrench hit the ground? At what speed does the wrench hit the ground?
A worker stands still on a roof sloped at an angle of 36 degrees above the horizontal. He is prevented from slipping by a static frictional force of 390 N. Find the mass of the worker.
An 8.40 gram bullet has a speed of 1.13 km/s. Find the bullet kinetic energy if its speed is doubled
an inclinced plane mass is .5kg inclinced plane at 30 degrees is 6.40m long, a book has kinetic friction with the incline of .2, find out the speed at the bottom of the incline
Distinguish between an element and an atom? Distinguish between mass number and atomic number? What is a practical application of the wave nature of an electron? Which electrons are most responsible for the properties of an atom?
On your way to class you are walking North up the oval. From Dale Hall you walk 180 m towards Nielsen Hall when you meet a friend heading the other direction.
A ship sets out to sail to the point 158 km due north. An unexpected storm blows the ship to a point 134 km due east of its starting point. (a) How far (in km) and (b) in what direction (as an angle from due east, where north of east is a positive an..
Three vectors , , and each have a magnitude of 52 m and lie inan xy plane. Their directions relative to the positivedirection of the x axis are 30°, 193°, and318°, respectively.
How many times, N, (in terms of R, L, M, μs, μk and g) will the block traverse the flat section? (A fractional answer for N is fine; it tells you where along L the block stops on its last trip.) Check that your answer makes sense if μk → 0.
Determine the acceleration of bodies A and B and the tension in the (non stretching) cable due to the application of the 60 lb force. Neglect all frictional forces and the masses of the pulleys.
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