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On a factory assembly line, boxes of mass 20 kg slide from rest down a frictionless incline of length 10m angled 20 degrees below the horizontal. The boxes slide horizontally across a ramp of unknown kinetic coefficient of friction, coming to rest over a distance of 15m where a worker picks them up.
What is the speed of the boxes at the bottom of the incline?
What is the coefficient of friction between the box and horizontal ramp?
A uniformly charged ring is 1.0 cm in radius. The electric field on the axis 3.5 cm from the center of the ring has magnitude 2.5MN/C
Three point charges are on the x axis: q1 is at the origin, q2 is at x = 4.91 m, and q3 is at x = 6.21 m. Find the electrostatic potential energy of this system of charges if q1 = q2 = q3 = 1.55 C.
A 23.5 kg gold bar at25.5°C is placed in a large,insulated 0.800 kg glass container at 15.0°C with 2.00 kg ofwater at 25.0°C. Calculate the final equilibrium temperature
Compute the linear momentum and angular momentum of a Frisbee of mass 0.144 kg if it has a linear speed of 1.75 m/s and an angular velocity of 64.0 rad/s
here is a point on the x-axis between the two charges where the electric field is zero. Find out the location of the point where the electric field is zero.
Suppose a 100m diameter stony (p= 3 g/cm^3) meteroid impacts the Earth with a speed of 20km/s. Assume all kinetic energy goes into the creation of an atmospheric blast wave.
After the engine is ignited, what is the rocket's speed when the spring has stretched 19.00 cm past its natural length? What would be the rockets speed after travelling the distance if it weren't tied down to spring.
Suppose that a 1 kg standard body accelerates at 4.00 m/s^2 at 160 degrees from the positive direction of the x-axis, owing to two forces, What is the magnitude and direction of the second force
Newton's apple was a sphere with a 5cm radius and density of 850kg/m^3. Its drag coefficient is 0.60 and the density of air is 1.2kg/m^3. Find the apple' terminal velocity
A string 2.0 m long has a mass of 2.4 x 10-2 kg. When fixed at both ends, it vibrates with a fundamental frequency 150 Hz. What is the speed of the wave on this wire? What is the frequency of its third harmonic?
The potential difference between two short sections of parallel wires in air is 104 V, What is the capacitance of the two wires
Two blocks with masses m = 16.7 kg and M = 70.1 kg are not attached. The coefficient of static friction between the blocks is 0.45 but the surface beneath M is frictionless. What is the minimum force F required to hold m against M?
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