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A weightlifter stands up at constant speed from a squatting position while holding a heavy barbell across his shoulders.
1- Draw a free-body diagram for the barbells.
2- Draw a free-body diagram for the weight lifter.
Two small nonconducting spheres have a total charge of 89.0?C , Q1
Adjacent antinodes of a standing waves on the string are 15.2 cm apart. A particle at an antinode oscillates in simple harmonic motion with amplitude 0.850 cm and period 0.0750 s. The string lies along the x axis and is fixed at x = 0.
A locomotive accelerates a 25-car train along a level track. Every car has a mass of 7.6 ? 104 kg, What is the tension in the coupling between the first car and the locomotive
what is the ball's speed immediately after the collision?
Determine the magnitude of the force between two point charges, Q1 = -2e located at (-3.60 cm, +4.10 cm) and Q2 = -8e located at (-0.60 cm, -8.60 cm). Continue working the problem above by calculating the direction of the force that Q1 exerts on Q..
A lamp which is 12.0 cm tall is 264.0 cm in front of a converging lens which has a focal length of 80.0 cm, What is the image distance for this lamp and lens combination
On a dry day, just after washing your hair to remove natural oils and drying it in detail, run a plastic comb through it. Small bits of paper will be attracted to the comb. Describe why.
a jetliner is moving at a speed of 270 km/h. the plan then decelerates at 4.5 m/s2. what is the minimum runway length on which this aircraft can land
A cement block accidentally falls from rest from the ledge of a 74.8-m-high building. When the block is 18.4 m above the ground, a man, 2.10 m tall, looks up and notices that the block is directly above him. How much time, at most, does the man have ..
Two ants race across a table 56 cm long. One travels at 4.5cm/s and the other at 2cm/s. When the first one crosses the finish line how far behind is the second one.
Compute the force that acts on a square access hatch at the bottom of the tank that measures 0.25m by 0.25m.
The coefficient of kinetic friction between the block and incline is = 0.45. The mass of the spring is negligible.
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