At a hydroelectric power plant, water is directed at highspeed against turbine blades on an axle that turns an electric generator. For maximum power generation, should the turbine blades be designed so that the water is brought to a dead stop, or so that the water rebounds?

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A: Since mass of the pulley is not given so we assume it as massless. Since mass and spring are…

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Q: An object of mass 8 kg has speed 30 m/s and is traveling in a direction that is 17 degrees W of N.…

A: Given data: The mass of the object 1 is m1=8 kg. The speed of object 1 is v1=30 m/s. The direction…

Q: i 57 In Fig. 9-9, a ball of mass m = 60 g is shot with speed v; = 22 m/s into the barrel of a spring…

A: Step 1:Step 2:Step 3:

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Q: A high jumper has to jump over a bar that is 2.30m above the ground. If her center of mass is 0.82m…

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Q: Why does the red ball not have a greater final speed if both balls have the same Vy components but…

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Q: A 124 km/h wind strikes a 49 m wide by 71 m high skyscraper and brings it to a halt. When air has a…

A: Concept: To Determine the average wind force on the building we will use the Formula…

Q: Water falls without splashing at a rate of 0.270 L/s from a height of 3.20 m into a 0.650-kg bucket…

A: Given information:Volume flow rate of water (V) = 0.270 L/sMass of the bucket (M) = 0.650 kgHeight…

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Q: Does air friction affect the results for the kinetic and potential energies of the plastic ball when…

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Q: A 0.250 kg ball is fired from a spring gun into a 12 kg block of a ballistic pendulum. The block is…

A: Given that ,The mass of the ball : MB = 0.250 kgThe mass of the block of a ballistic pendulum : M =…

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Q: 1)An arrow with a suction cup on the end is fired at the back of a cart and sticks to it, causing…

A: Hey, there are multiple questions posted; we are authorized to answer one question at a time, since…

Q: Question 1. A block of ice mass m1 is sliding on an ice-covered valley when it collides with another…

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Q: List one quantity which is conserved during all collisions and explosions.

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Q: Part A In a hydroelectric dam, water falls 30.0 m and then spins a turbine to generate electricity.…

A: Height, h = 30 mMass, m = 1 kgAcceleration due to gravity, g = 9.81 m/s2

Q: 15. mmh A person exerts a horizontal force of 190 N in the test apparatus shown in the drawing. Find…

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Q: I need help coming up with what physics principles that relate “a bird egg falling from a tree onto…

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Q: Consider a pendulum of mass m and length L. The suspension point of the pendulum it’s on a height L.…

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Q: The device below consists of five identical hard balls supported by strings of equal lengths. For…

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Q: A 30 kg box with a height of 0.230 meters is on top of a 0.5-meter-high table and is initially at…

A: Given, Projectile mass of the projectile mp=5 kg initial velocity u=20m/s rebound speed of the…

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Q: A uniform soda can of mass 0.141 kg is 12.1 cm tall and filled with 0.351 kg of soda (figure below).…

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Q: A snowball of mass 2 kg is rolling on a flat surface with a speed of 5 m/sec. Assume there is no…

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Q: What aspect of physics was not known by the writer of this newspaper editorial that ridiculed early…

A: We are given a statement by a science newspaper editorial author. It states, "Bobken does not know…