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At a certain instant, a 25-kg object is sliding eastward at a speed of 8.0 m/s, propelled by an eastward force of 125 N. The coefficient of kinetic friction between the object and the horizontal surface it slides on is 0.60. No other horizontal forces act on the object. Assuming all forces remain constant, determine how far the object travels in the next 5.0 s.
A cubic meter of some material has a mass of 5200 kg. Find the buoyant force on the block and the tension in the cable
A chair of weight 125 N lies atop a horizontal floor; the floor is not frictionless. You push on the chair with a force of F = 35.0 N directed at an angle of 42.0 below the horizontal and the chair slides along the floor. Using Newton's laws, compute..
A physics professor is pushed up a ramp inclined upward at an angle 33.0^\circ above the horizontal as he sits in his desk chair that slides on frictionless rollers. The combined mass of the professor and chair is 82.0 kg.
near earth the density of protons in the solar wind a stream of particles from the sun is 8.10 cm-3 and their speed is
A baseball batter sets up in the batting box and holds his bat still over the plate for a moment. How large is the torque exerted by the batter's hand on the bat
The crankshaft in a race car goes from rest to 3540{\rm rpm} in 3.0{\rm s}. What is the crankshaft's angular acceleration
A 25 g bullet strikes and becomes embedded in a 1.65 kg block of wood placed on a horizontal surface just in front of the gun, what was the muzzle speed of the bullet
Water drives a waterwheel (or turbine) of radius R = 3.0 m as shown in the figure. The water enters at a speed v1 = 6.5m/s, What is the torque the water applies to the waterwheel
Multiple-Concept Example 3 provides some pertinent background for this problem. Suppose a single electron orbits about a nucleus containing two protons (+2e), find the magnitude of the electron's centripetal acceleration
An air bubble of 1.0-mm radius is rising in a container with vegetable oil of specific gravity 0.82 and viscosity 0.18 Pa · s. What is its terminal velocity
A certain person in a typical conversation speaks at a soundlevel of 63 dB. The music at a certain rock concert reaches a soundlevel of 110 dB. How many times as great is the intensity of the music?
A 120 V ac voltage source is connected across a 2 muF capacitor. Find the current to the capacitor if the frequency of the source is 60 Hz. What is the power loss in the capacitor?
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