Cristel-L5 Conservation of Energy

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C Dynamic Analysis and Aeroelasticity SECTION B Answer TWO questions from this section ENG2012-N The moment of inertia of a helicopter's rotor is 320kg. m². The rotor starts from rest and at t = 0, the pilot begins by advancing the throttle so that the torque exerted on the rotor by the engine (in N.m) is modelled by as a function of time (in seconds) by T = 250t. a) How long does it take the rotor to turn ten revolutions? b) What is the rotor's angular velocity (in RPM) when it has turned ten revolutions?

Due to the conservation of angular momentum, what will happen to the rotation speed of a large Red Giant star when it undergoes a Type II Supernova explosion and collapses into a compact Neutron Star? Nota Bene: Consider only what happens to the star during its collapse, not what may happen to it later. A Its rotation will slow down. B It will rotate at the same speed. C Its rotation will speed up.

1. The development of thermodynamics since the 17th century, which was pioneered by the invention of the steam engine in England, and was followed by thermodynamic scientists such as Willian Rankine, Rudolph Clausius, and Lord Kelvin in the 19th century. explain what the findings or theories of the 3 inventors are! Please answer fast max 25-30.minutes thank u

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Most collisions are inelastic, meaning the kinetic energy is not conserved in the system.  (a) What are the three most common ways for energy to leave a system during a collision?  To the best of my knowledge, the use of the word "perfectly" in a perfectly elastic collision is not necessary.  Any elastic collision is a perfectly elastic collision.  Both concepts mean the kinetic energy is conserved.  The use of the word "perfectly" in perfectly inelastic collisions is just telling you that the two objects end up sticking to each other (have the same final velocity).  (b) Combine the equations for the 1-D conservation of linear momentum and the conservation of kinetic energy to create a third equation.  Any two of these equations now contain all the information, so the three equations are said to be linearly dependent in math-speak.  This means we only need to use any two equations for our solutions, naturally we will chose the simplest two.  (c) Use two of these equations along with…

(b) A weight, as shown in figure Q1b-(a) has to move at constant velocity of 2 m/s on an inclined surface with a coefficient of friction of 0.27. The width of the block is 20 cm. V = 2 m/s 50 cm F1 = ? 45° 200 N Fig Qlb-(a) i. Determine the force (F1) that needs to be applied in the horizontal direction. 30 cm

F •G y h A В + da dg cc UBC Engineering Given: The horizontal force F=450 is applied at a height y = 0.6 m from the bottom of the cart The cart's total mass of m = 350 kg with a center of mass at G. The center of gravity G is located at a height h = 1.5 m from the ground. d_A = 0.91 m and d_B = 0.78 m. %3D %3D %3D Find: al Acceleration of the cart b/ Normal forces at A and B. Assume the wheels have negligible mass and no rolling resistance

Wind power is defined as the use of air flow through wind turbines to provide the mechanical force to generate electricity. Wind power is an alternative to burning fossil fuels, and is renewable and produces no greenhouse gas emissions during operation. Modern horizontal-axis wind turbines often use three blades. Theoretically, the maximum power P (unit: watts) that a three-blade wind turbine can extract from the wind power can be calculated as: P = pAv³C₁. . (Equation 1) where p is the air density (kg/m³), A is the sweep area of the turbine (m²) and can be calculated from the length of the turbine blades, and v is the wind speed (m/s). Cp is the power coefficient that is unique to each turbine type. This coefficient represents the amount of kinetic energy from the wind that is captured by the turbine. From the Betz's limit law we know that the best power conversion possible is Cp,max = 0.59. Part 1 Given the following data: Blade length /= 50 m Air density p= 1.5 kg/m³ Power…

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1) Calculate the magnitude of the force in the elbow joint in units of newtons.

Imagine that as an engineering intern you have been assigned the task of selecting a motor for a pump. After reviewing motor catalogs, you narrow your choice to two motors that are rated at 1.5 kW. Additional information collected is shown in an accompanying table. The pump is expected to run 4200 hours every year. After checking with your electric utility company, you determine the average cost of electricity is about 11 cents per kWh. Based on the information given here, which one of the motors will you recommend to be purchased?

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Below is a diagram of a human arm. 5.0 cm F M -15 cm- Ꮃ . A -35 cm- W B The forearm is lifted by the biceps muscle, which is attached approximately 5.0 cm from the joint. Champion athletes are often found to have muscle attachments farther from the joint than the average person (5.5 cm). (a) Why does this small change in the muscle attachment position give an advantage when lifting or throwing? Explain clearly, referring to the above diagram.10 108

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Intro to Transport Processes TRUE or FALSE. Please provide a quick explanation thanks! 1. Each molecule of a system has a certain quantity of mass, thermal energy, or momentum associated with it. 2. Momentum transport in a fluid depends bulk movement of molecules and not on individual molecule of the system.  3. At same mass, the momentum of a molecule is greater than the other molecules if it has less velocity?

Science 24: Module 4 Section 4 Assignment: The Technology of Safety For questions1 and 2, read each question carefully, Decide which of the choices BEST completes the statement. Place your answer in the blank space given. 23 1. Safety features in a vehicle work to reduce forces in a collision by A. lengthening the time in which changes in momentum occur B. decreasing the time in which changes in momentum occur C. decreasing the time of the impulse D. increasing the change in momentum 2. Road safety features, such as crash cushions and modern guardrails, reduce the force of a collision by A. increasing the impulse B. decreasing the impulse C. increasing the time over which the impulse occurs D. decreasing the time over which the impulse occurs 3. Safety engineers use people in a collision. to see what will happen to 4. Decide whether each of the following statements is true (T) or false (F). Place your answer in the blank space provided. a. Restraining features operate continuously…

Determine the cruise distances R_1, R_2 and R_3

account_circle   Science PhysicsQ&A LibraryA child’s toy consists of a m = 31 g monkey suspended from a spring of negligible mass and spring constant k. When the toy monkey is first hung on the spring and the system reaches equilibrium, the spring has stretched a distance of x = 17.6 cm, as shown in the diagram. This toy is so adorable you pull the monkey down an additional d = 7.6 cm from equilibrium and release it from rest, and smile with delight as it bounces playfully up and down.  1. Calculate the speed of the monkey, ve, in meters per second, as it passes through equilibrium.  2. Derive an expression for the total mechanical energy of the system as the monkey reaches the top of the motion, Etop, in terms of m, x, d, k, the maximum height above the bottom of the motion, hmax, and the variables available in the palette.   3. Calculate the maximum displacement, h, in centimeters, above the equilibrium position, that the monkey reaches. A child’s toy consists of a…

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