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1. The great Roman Poet, Lucretius wrote, "Things cannot be born from nothing, cannot when begottend brought back to nothing." This statement became an accepted theory as a result of the work of the chemist, Lavoisier in the 18th century. This is the law of conservation of matter. Similarly, the law of conservation of energy is an important law in physics. Can you discuss the validity of the conservation of energy in terms of potential (gravitational or elastic) and kinetic energy by giving real-life applications?All discussions should include an in depth analysis and references.
2. You can stop a mosquito travelling at a certain speed towards you by intercepting it with your hand. Can you do the same for a car moving at the same speed as a mosquito? Discuss this scenario using your knowledge on momentum and impulse.
A model rocket blasts off from the ground, rising straight upwardwith a constant acceleration that has a magnitude of 80.4m/s2 for 1.72 seconds, at which point its fuel abruptlyruns out. Air resistance has no effect on its flight. What maximum altit..
an aluminum tray used for making ice cubes is filled with water and placed in a freezer at -19.8deg c. the emissivity
A Beryllium nucleus consists of 4 protons and 5 neutrons. What is the potenial at one of the corners due to the other 3 charges
W hat is the magnitude of an average force exerted on the superball by the sidewalk. what is force caused by the water on the bottom.
If water at 15°C is flowing through a 3cm diameter pipe with a velocity of 50 cm-1, calculate the Reynolds number. Is the flow turbulent or laminar?
A person stands on a bathroom scale in a motionless elevator. When the elevator begins to move, the scale briefly reads only 0.63 of the person's regular weight. Calculate the magnitude of the acceleration of the elevator
A 30 kg launching machine fires a 250 gram projectile horizontally at 100 m/s. This causes the machine to slide backward 1.122 meters before coming to a rest. how far would this machine slide
While eating lunch with friends Diana spots her boyfriend having lunch, and having a good time with, How fast must Diana through the apple so that it hits her boyfriend
A 89.0-kg boulder is rolling horizontally at the top of a vertical cliff that is 20 m above the surface of a lake, What must be the minimum speed of the rock
A physical pendulum in the form of a planar object moves in simple harmonic motion with a frequency of 0.220 Hz. Determine the moment of inertia of the pendulum
An initially stationary 2.0 kg object accelerates horizontally and uniformly to a speed of 9 m/s in 3.3 s. What is the instantaneous power due to that force at the end of the interval
A golfer hits a shot to a green that is elevated 3 m above the point where the ball is struck. Find the speed of the ball just before it lands
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