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Q1. A flight attendant pulls her 70.0N flight bag a distance of 244 m along a level airport floor at a constant speed. The force she exerts is 36N at an angle of 52° above the horizontal. Find the work she does on the flight bag.
(b) Find the work done by the force of friction on flight bag.
(c) Find the coefficient of kinetic friction between flight bag and floor
A bumper car with mass m1 = 129 kg is moving to the right with a velocity of v1 = 4.50 m/s. A second bumper car with mass m2 = 86.0 kg is moving to the left with a velocity of v2 = -3.6 m/s. The two cars have an elastic collision. Suppose the surface..
A hunter aims directly at a target (on the same level) 84.2m. If the bullet leaves the gun at a speed of 193 m/s, by how much will it miss the target.
An open-pit coal mine consumes 96 hectares of land, down to the depth of 26 m, each year. What volume of earth, in cubic kilometres, is removed in this time.
A parallel-plate capacitor is charged to an electric potential of 337 V by moving 3.95×1016 electrons from one plate to the other. How much work is done in charging the capacitor.
An ice block is pushed horizontally on a frictionless surface with initial velocity v0. At some point, it comes to the nearly semicircular bump with a radius R=0.42m and the height h=0.33m above the ground.
If the contact time with the sidewalk is 1800s, what is the magnitude of an average force exerted on the superball by the sidewalk.
At the same time, the stationary trumpeter played the same note. Ballot heard 3.0 beats per second. How fast was the train moving toward him.
A small remote-control car with a mass of 1.60 kg moves at a constant speed of v = 14.0 m/s in a vertical circle inside the hollow metal cylinder that has the radius of 5.00 m.
What is its velocity at impact? What will its average velocity be? What will its average speed be.
What are the components of displacement vector from camp to summit? What is its magnitude? Decide the x axis east, y axis north, and z axis up.
The link between portfolio level objectives with portfolio success factors that are achieved through individual projects and points out how contributes to strategic fit, use of synergies, etc.
How much time passes by they collide
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