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A massless, horizontal beam of length L and a massless rope support a sign of mass m (Figure).
a. What is the tension in the rope?
b. In terms of m, g, d, L, and θ, what are the components of the force exerted by the beam on the wall?
An object is solid throughtout. When the object is completely submerged in ethyl alcohol, its appart weight is 15.2 N. When completely submerged in water, its apparent weight is 13.7 N. What is the volume of the object?
On vacation, your 1250 kg car pulls a 540 kg trailer away from a stop light with an acceleration of 1.75 m/s2. What is the net force exerted on the trailer
electrons flow through a 2.2 mm diameter aluminum wire at 2.2 x 10^-4 m/s. *electron density of aluminum is 6 x 10^28 m^-3*
The electric motor of a model train accelerates the train from rest to 0.740 m/s in 34.0 ms. Find the average power delivered to the train during its acceleration
A 868 kg automobile is sliding on an icy street. It collides with a parked car which has a mass of 663 kg. The two cars lock up and slide together with a speed of 22.9 km/h. What was the speed of the first car just before the collision?
What are the magnitude and direction of the force exerted on a 4.04 µC charge with a 277 N/C electric field that points due east?
A toy steam engine has a mass of 1.00 kg. The toy starts from rest and reaches a velocity of 4.00 m/s in a time of 3.00 seconds while covering a distance of 4.50 meters, What is the change in the internal energy of the toy
A horizontal segment of pipe tapers from a cross sectional area of 50 cm2 to 0.5 cm2. What is the pressure at the narrow end of the segment
An ocean liner leaves New York City and travels 43° north of east for 189 km. How far east and how far north has it gone? In other words, what are the magnitudes of the components of the ship's displacement vector in the directions.
Three deer, A, B, and C, are grazing in a field. Deer B located 64.00 m from dear A at an angle of 50° north of west. Deer C is located 76° north of east relative to dear A. The distance between deer B and C is 93m. What is the distance between de..
A 40.0 N force is applied to a 46.0 cm long torque wrench. What is the net torque applied to the nut, what is the bolt%u2019s moment of inertia
the position of an object moving in a straight line is given by x= 5+3.0t - 40t^2 -20t^3, where x is in meters and t in seconds. a)What is the position of the object at t=1,2,3 and 4 s
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