Nuclear power plant converts energy from nuclear fission of uranium 235 into electricity with an efficiency of 35.0%. How much mass is destroyed in one year to produce a continuous 1.0 GW of electric power?

Q: What size force acceleration a 0.010 kg bullet from a rest to a speed of 1100 m/s in a distance of a…

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Q: A 10 kg toy roller-coaster car is 9 meters above the ground and moves at a speed 15 m/s. What is the…

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Q: What velocity (m/s) must a 10.7 kg object be moving in order to possess a kinetic energy of 1.38J?

A: Given data:  Mass (m) = 10.7 kg Kinetic energy (KE) = 1.38 J Required: Velocity in m/s

Q: A object weighing 33 kg goes up a 7 meter hill. If 231 J of thermal energy ar created how fast was…

A: Given, Mass, m=33kg Height, h=7m According to the conservation of energy,   12mv2=mgh+231

Q: (a) What is the available energy content, in joules, of a battery that operates a 1.3 W electric…

A: Part (a) Calculation:Time in seconds=21×30.44×24×3600=55,209,600 seconds…

Q: how fast must a 100kg cart be traveling to have a kintec energy of 25,000 J?

A: Given:Mass,M=100 kgKintec energy ,KE=25,000JFind how fast must be traveling ,VNow,Kinetic energy…

Q: A microwave oven has a power requirement of 1,248 W. A frozen dinner requires 5.0 min to heat on…

A: Given: The power required to microwave is 1248 W. The time required to heat the frozen dinner is 5.0…

Q: What is the energy in the motion of a ball with a mass of 4 kg going at 11.4 m/s?  Give you answer…

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Q: What is the kinetic energy of a mass of 4kg moving with velocity 8 m/sec?

A: Mass, m = 4 kgVelocity, v = 8 m/sKinetic Energy, KE = ?

Q: How much joules of energy is needed to change the speed of a 1,900 kg sport utility vehicle from…

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Q: At room temperature, an oxygen molecule, with a mass of 5.31x10^-26 kg typically has kenetic energy…

A: The expression for the kinetic energy of molecule is, KE=12mv2       (I)            m=mass of…

Q: What is the kinetic energy of a 15 g mass moving at 127 m/s

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Q: What is the velocity of a 1,500 kg car if its kinetic energy is 350 kJ?

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Q: As we’ve seen, the sun’s energy comes from fusion reactions that combine four hydrogen atoms to…

A: As from the give data, four hydrogen atoms combine to produce a single helium atom.  The reaction is…

Q: What is the kinetic energy of a 4 kilogram cat runnig at 5 m/sec ?

A: given that,mass of cat, m=4 kgvelocity of cat, v=5 ms

Q: An oxygen molecule, with mass of 2.626x10-26 kg has kinetic energy of approximately 5.89x10-21 J.…

A: Given data: Mass (m) = 2.626 × 10-26 kg Kinetic energy (KE) = 5.89 × 10-21 J Required: The velocity…

Q: If you had two shoes, an ordinary shoe and an "antishoe" made of antiparticles, and you annihilated…

A: Consider that US population at this moment is 328.2 million. If each of them has a weight of 600N,…

Q: A microwave oven has a power requirement of 1,243 W. A frozen dinner requires 6.5 min to heat on…

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Q: What is the speed of a 2.5-kilogram mass after it has fallen freely from rest through a distance of…

A: initial velocity , vi=0                           d = 12 m  final velocity      vf = ? We know that…

Q: n the future pennies have become obsolete and a new type of furnace is invented that converts the…

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Q: A1400 kg car can travel at a velocity of 15m/s. What is its kinectic energy?

A: Mass of the car, m=1400 kg   The velocity of the car, v=15 m/s

Q: A particle has a mass of 1.88E-28 kg and it travels at a speed of 0.971c, where c is the speed of…

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Q: How fast would 0.145 kg baseball have to go to have a kinetic energy of 120.5 J?

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Q: If a 0.02 kg bullet is traveling 2 meters off the ground, what would the potential energy of the…

A: The expression for the potential energy is, P=mgh

Q: A 7,500-kg truck runs into the rear of a 1,000-kg car that was stationary. The truck and car are…

A: kinetic energy  that  was "lost" in this inelastic collision. given, mass of truckm1=7500 kgmass of…

Q: A baseball player throws a ball of mass 0.15kg with 162 Joules of kinetic energy. By how much do you…

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Q: A book on a shelf has potential energy of 200J and two times the mass of a book next to it. What is…

A: Given data The gravitational potential energy for the book is given as PEh = 200 J. The…

Q: How much work must be done on an electron to accelerate it from rest to a speed of 0.939c? Number i…

A: Given, Speed of the electron v=0.939c mass of the electron m=9.11×10-31 kg The work done in…

Q: If 75.0 L of water at 11.0C enters a hot water heater where it is heated to 57.0C Determine:  (a)…

A: Given,Volume of water = 75.0L = 75 x 10-3 m3Initial temperature, T1 = 11°C = 284kFinal Temperature,…

Q: The energy required to increase the speed of a certain car from 18 m/s to 26 m/s is 200 kJ What…

A: Write the expression for the change in the kinetic energy.…

Kinematics

A machine is a device that accepts energy in some available form and utilizes it to do a type of work. Energy, work, or power has to be transferred from one mechanical part to another to run a machine. While the transfer of energy between two machine parts, those two parts experience a relative motion with each other. Studying such relative motions is termed kinematics.

Kinetic Energy and Work-Energy Theorem

In physics, work is the product of the net force in direction of the displacement and the magnitude of this displacement or it can also be defined as the energy transfer of an object when it is moved for a distance due to the forces acting on it in the direction of displacement and perpendicular to the displacement which is called the normal force. Energy is the capacity of any object doing work. The SI unit of work is joule and energy is Joule. This principle follows the second law of Newton's law of motion where the net force causes the acceleration of an object. The force of gravity which is downward force and the normal force acting on an object which is perpendicular to the object are equal in magnitude but opposite to the direction, so while determining the net force, these two components cancel out. The net force is the horizontal component of the force and in our explanation, we consider everything as frictionless surface since friction should also be calculated while called the work-energy component of the object. The two most basics of energy classification are potential energy and kinetic energy. There are various kinds of kinetic energy like chemical, mechanical, thermal, nuclear, electrical, radiant energy, and so on. The work is done when there is a change in energy and it mainly depends on the application of force and movement of the object. Let us say how much work is needed to lift a 5kg ball 5m high. Work is mathematically represented as Force ×Displacement. So it will be 5kg times the gravitational constant on earth and the distance moved by the object. Wnet=Fnet times Displacement.