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A helicopter flies over the arctic ice pack at a constant altitude, towing an airborne 128-kg laser sensor that measures the thickness of the ice (see the drawing). The helicopter and the sensor both move only in the horizontal direction and have a horizontal acceleration of magnitude 2.77 m/s2. Ignoring air resistance, find the tension in the cable towing the sensor.
Two steel wires of the same length, one with radius r and the other with radius 2r, are connected together, end to end, and tied to a wall. How far does the point where the two wires meet move
A rabbit runs in the straight line with a velocity of +1.6 m/s for a period of time, rests for 12 s, and then runs again along the equivalent line at +0.52 m/s for an unidentified amount of time. The rabbit travels the total distance of 1224 m, and i..
Sitting on a couch watching the Sochi Olympics, José is eating an In-N-Out Double-Double Cheeseburger with onions. If sitting on the couch while eating burns approximately 100 kcal an hour
A slide projector needs to create a 96.0 cm high image of a 2.20 cm tall slide. The screen is 301 cm from the slide. find focal length does the lens need
a child tosses a stick into a stream. the stick moves downstream at a rate of 1.5 ms. how fast is the stick moving
Treating our rigid legged friend as a particle, what is the average force his feet exert on the ground while he slows down.
While working in a research lab, you find that it takes 211 J of heat to increase the temperature of 1.53 kg of a material by 44 K
A disk with a mass of 37.5kg and a radius of 38.3cm is mounted on a frictionless horizontal axle. A string is wound many times around the disk and then attached to a 56.4kg block. Find the acceleration of the block, assuming that the string does n..
A hurricane-force wind of 220 blows across the face of a storefront window. Estimate the force on the 2.2 3.5 window due to the difference in air pressure
Point P is at a potential of 500.0 kV and point S is at a potential of 200.0 kV. by how much does its kinetic energy change
The length of the mercury column at the ice point and steam point are 5.0 cm and 40.0cm respectively. What is the temperature of the liquid
A uniform ladder 15 ft long is leaning against a frictionless wall at an angle of 56° above the horizontal. The weight of the ladder is 35 pounds. A 77 lb boy climbs 6.0 ft up the ladder. What is the magnitude of the friction force exerted on the lad..
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