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Two blocks of masses 20 kilogram and 8 kilogram are connected together by alight string and rest on a frictionless level surface. Attached to the 8 kilogram mass is another light string which a person uses to pull both blocks horizontally. If the two-block system accelerates a 0.5m/s^2, then find the tension in the connecting string between the blocks?
A ball is moving at 4m/s and has a momentum of 48 kgm/s. What is the ball's mass
in the produce section of a supermarket, five pears are placed on a spring scale. The placement of the pears stretches the spring and causes the dial to move from zero to a reading of 2.0kg. If the spring constant is 450 n/m, what is the displacement..
The two hot-air balloons in the drawing are 48.2 m and 61.0 m above the ground. A person in the left balloon observes that the right balloon is 13.3° above the horizontal.
The nucleus of a helium atom contains two protons. In a simple model of this nucleus, What is the electric potential energy of the two protons
While driving in the mountains, you notice that when the freewaygoes steeply downhill, there are emergency exits every few miles.These emergency exits are straight dirt ramps which leave the freeway and are sloped uphill.
A mass m=10kg is oscillates between two springs k 1 =100N/m and k 2 =200N/m. what is the maximum velocity of the mass
Vertically polarized light with intensity Io is normally incident on an ideal polarizer. As the polarizer is rotated, the intensity I of light transmitted through the polarizer varies with the orientation of the polarizer (Θ), where Θ = 0 corresponds..
Two straight wires run parallel to each other, each carrying a current in the direction shown below. The two wires experience a force in which direction? B) What happens when one of the currents is turned off?
The front and rear sprockets on a bicycle have radii of 9.00 and5.10 cm, respectively. The angular speed of the front sprocket is 9.70 rad/s. Determine the following. The linear speed of the chain as it moves between the sprockets.
A passenger in a train that moves horizontally looksoutside and sees a child hitting a ball straight up to a height of30 m. Find the speed of the train relative to the ground
A child of mass 24 kg sits 2.10m to the left of the center of a seesaw. The mass of the seesaw is 35 kg. How far to the right of the central pivot must a second child of mass 40 kg sit if the seesaw is to be perfectly balanced.
An archer fish spies a meal of a grasshopper sitting on a long stalk of grass at the edge of the pond in which he is swimming. What angle above the horizontal must he spit
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