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A mail bag with a mass of 120 is suspended by a vertical rope of length 8.00 .
A) What horizontal force is necessary to hold the bag in a position displaced sideways a distance 3.00 from its initial position?
Take free fall acceleration to be = 9.80 .
B) How much work is done by the worker in moving the bag to this position?
A copper pot with a mass of 0.505kg contains0.175kg of water, and both are at a temperature of21.0?C. Find the final temperature of the system
Which of the planets fits the following description: "a solid, cool surface, with occasional dust clouds and a thin CO2 atmosphere".
An image of the moon is created by reflection off of a concave mirror at a point 6.0cm from the mirror. where will the image be
A 3.00-g bullet, traveling horizontally with a velocity of magnitude 370 m/s, is fired into a wooden block with mass 0.800 kg, What is the decrease in kinetic energy of the bullet
A spherical balloon has a radius of 12.0 m, and is filled with helium. How large a cargo can it lift, assuming that the skin and structure of the balloon have a mass of 1000 kg
A box of mass 86.0 kg is connected to a second box with a mass of 30.0 kg. find the magnitude of the tension in the string between the two boxes
You are driving along a highway at 35.0 m/s when you hear the siren of a police car approaching you from behind, What is the speed of the police car
two identical loudspeakers connected to a single audio amplifier are 5.0 m apart. the speakers at what spatial period does the intensity vary
uniform thin rod of length L=2.5 m and mass 2 kg can rotate in a horizontal plane about a vertical axis through its center. what is the angular velocity of the rod immediately after the collision
A ball is shot from the top of a building with an initial velocity of 20 m/s at an angle ? = 44° above the horizontal. If a nearby building is the same height and 55 m away, how far below the top of the building will the ball strike the nearby build..
A soccer ball m = 0.9 kg dropped from a height h = 4.6 m bounces off the grass. Write an expression for how high hf the soccer ball bounces
A round pipe of varying diameter carries petroleum from a wellhead to a refinery. At the wellhead the pipe\'s diameter is 57.5 cm (0.575 m), what is the pipe\'s diameter at the refinery
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