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A force has a strength of 87 N and makes an angle of 21 degrees with respect to the positive x axis, in the x-y plane. What is the y component of this force (in N)?
What is the magnitude of the force that each sphere experiences, and is the force attractive or repulsive?(b) The spheres are brought into contact and then separated to adistance of 2.10 cm. Determine themagnitude of the force that each sphere now ..
A diesel engine performs an amount of mechanical work equal to 2800Jand discards an amount of heat equal to 4800J each cycle. What is the thermal efficiency of the engine
A current of 16.0 mA is maintained in a single circular loop with a circumference of 3.70 m. What is the magnitude of the torque exerted on the loop by the magnetic field
A car with a mass of 1.50x10^3 kg starts from rest and accelerates to a speed of 18.0 m/s in 12s. Assume that the force of resistance remains constant at 400-N all through this time. What is the average power developed by the car's engine?
A venturi meter is a device for measuring the speed of a fluid within a pipe. A gas flowing at a speed v2 through a horizontal section of pipe whose cross-sectional area A2 = 0.0700 m2. The gas has a density of ? = 1.20 kg/m3.
A constant force, F = (4.51, ?3.79, 2.30) N, acts on an object of mass 18.2 kg, What is the total work done by this force
a beam of light with red and blue components of wavelengths 670 nm and 425 nm respectively strikes a slab of fused
A baloon 1.2 g when empty has volume 800 cm ^3 and is filled with helium. density of air is 1.29 kg/m^3 while that of helium is .179 kg/m, calculate acceleration of balloon
An ac power generator produces 24 A rms at 4909 V. The voltage is stepped up to 86000 V by an ideal transformer, What percentage of the power delivered by the generator is dissipated as heat in the power line
What is a vertical velocity of the ball
Vertically polarized light with an intensity of .60 W/m^2 passes through a polarizer whose transmission axis is at an angle of 35 degrees with the vertical
A 3 kg block moving at 4 m/s makes a head-on elastic collision with a stationary block of mass 2 kg. Use coservation of momentum and the fact that the relative speed of recession equals the relative speed of approach to find the velocity of each bloc..
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