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A puck with mass 0.28 kg moves in a circle at the end of a string on a frictionless table, with radius 0.75 m. The string goes through a hole in the table, and you hold the other end of the string. The puck is rotating at an angular velocity of 18 rad/s when you pull the string to reduce the radius of the puck's travel to 0.55 m. Consider the puck to be a point mass. What is the new angular velocity of the puck?
A dinoflagellate takes 4.9 s to travel 0.5 mm. Approximate a dinoflagellate as a sphere of radius 35.0 µm (ignoring the flagellum). What is the power output of the flagellate
A speedboat moves on a lake with initial velocity vector v1,x = 9.27 m/s and v1,y = -2.17 m/s, find the components of the speedboat\'s final velocity
How many packs of shingles can the contractor lift before he begins to slide down the roof assuming the following Contractor weights and values for the coecient of static friction exists between the contractor and the roof.
A refracting telescope with a lens whose diameter is 33.0 cm is used to view a binary star system that emits light in the visible region. what is the distance between the two stars
Suppose you have two identical containers with the samevolume, both submersed in a hot water bath so that both containersare at the same temperature. One container is filledwith one mol of hydrogen gas (H2) while the other holds one mole of nitrogen..
A speedboat starts from rest and accelerates at +2.01 m/s2 for 6.95 s. At the end of this time, the boat continues for the additional 5.70 s with an acceleration of +0.518 m/s2. Following this, the boat accelerates at -1.49 m/s2 for 8.20 s.
On an airplane's takeoff, the combined action of the air around the engines and wings of an airplane exerts a 7960-N force on the plane, What is the weight of the plane
Three identical particles, A, B and C, each with charge q=10.00 micro Coulombs, are placed along a circle of radius r-1.00 m at angles 0, Calculate net work done by the field due to the charges at 0 and 90 degrees to move the charge at 180 degrees ..
A boy uses a slingshot to launch a pebble straight up into the air. The pebble reaches a height of 24.0 m above the launch point 2.3 seconds later, What was the pebble's initial speed
The string in a yo-yo is wound around an axle of radius 0.547 cm. The yo-yo has both rotational and translational motion, like a rolling object, and has mass 0.344 kg and outer radius 1.99 cm. Starting from rest, it rotates and falls a distance of 1...
A 75kg hiker climbs to the top of a 4000m -high mountain. The climb is made in 5.0h starting at an elevation of 3000m. Calculate the average power output in horsepower
Consider a positive charge q that is released from rest at the origin in the orthogonal uniform electric and magnetic fields E = E yˆ and B = B zˆ.
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