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A four pulley system shown here is used to suspend a mass of 99kg from a support beam in a warehouse. If the force is applied upward, as shown in the figure, calculate the mass of an object that can be used as a counterweight to create an applied force necessary to balance the load. Acceleration due to gravity is 9.8 m/s^2.
The quantity of charge q (in coulombs) that has passed through a surface of area 1.90 cm2 varies with time according to the equation q = 8t3 + 8t + 6, What is the value of the current density
Calculate the mass M of the cone. By symmetry, the center of mass of the cone should Lie on its axis of symmetry (the z axis in this case). Calculate the z-coordinate of its center of mass (remember its base is centered at the origin).
A projectile is launched on level ground at an angle theta from the horizontal with initial speed v0. It reaches the ground again at a time t and at a location x, y. Discover a general expression for the time it takes to rise to the maximum height (y..
A "seconds pendulum" is one that moves through its equilibrium position once each second. (The period of the pendulum is precisely 2.000 s.) The length of a seconds pendulum is 0.9928m at Tokyo and0.9941m at Cambridge, England.
Standing waves on a string are generated by oscillations having amplitude 0.005 m, angular frequency 942 rad/s, and wave number 0.750p rad/m. What is the equation of the standing wave?
a inverted cylindrical container is lowered slowly beneath the surface of a pool of water. air trapped in the container
apollo orbit around the moon was adjusted to an average orbit of 111km radius of the moon is 1785 km and the mass of the moon is 7.3 *10"(22) kg. at what velocity did it orbit the moon
A student standing on a stationary skateboard tosses a textbook with a mass of mb = 2 kg to a friend standing in front of him. What is the magnitude of the velocity of the book
A batter hits a 0.140-kg baseball that was approaching him at 30.0 m/s and, as a result, What is the average force exerted by the bat
An object is placed 12 cm in front of a concave mirror whose focal length is 20 cm. The object is 3.8 cm tall. Establish (a) the location of the image, taking a real image as a positive value and a virtual image as a negative value.
Draw labor market demand and supply graphs showing the change in labor demand and/or labor supply in the U.S. and in Mexico resulting from this program.
At a carnival, you can try to ring a bell by striking a target with a 9.10-kg hammer. In response, a 0.410-kg metal piece is sent upward toward the bell, How fast must the hammer be moving
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