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1. A baby throws a piece of ice at 0degree from a high chair. The ice travels down, and stops after it lands on the floor. You may define your own parameters for heights and speeds. When constructing energy interaction diagrams below, clearly specify physical system and interval. (Expressing the energy conservation equation in terms of ΔEs is sufficient.) a) Choose a physical system and an interval. Describe the chosen process using an energy-interaction diagram. Explain briefly the energy systems you chose.It might be helpful to read parts b) and c) before doing a). b) Using the same interval as defined in a), choose a different physical system. Draw and energy-interaction diagram, and explain why it is different from a).c) Using the same physical system as in a), choose a different interval, such that the energy systems involved will change. Draw an energy-interaction diagram, and explain why it is different from a).
A machine gun fires 25-g bullets at the rate of 4 bullets per second. What is the average recoil force experienced by the machine gun
Lightning can be studied with a Van de Graaff generator, which consists of a spherical dome on which charge is continuously deposited by a moving belt, What is the maximum potential of the dome
A 2.0 kg ball tied to a string fixed to the ceiling is pulled to one side by a force to an angle of ? = 33.5°. how large is the force that is holding the ball in position
A 0.534-nm photon collides with a stationary electron. After the collision the electron moves forward and the photon recoils backwards. Find the momentum of the electron.
a frictionless roller coaster car of mass m tops the first hill with speed v0 at height h. How high will the car go on the last hill
In a tornado or hurricane, a roof may tear away from the house because of a difference in pressure between the air inside and the air outside. What is the magnitude of the force on the roof
An automobile on a flat track travels at 28 m/s around a curve with a 56 meter radius. Find the automobile's centripetal acceleration
A 12 meter long uniform ladder is leaning against a frictionless wall at an angle of 50o above the horizontal. The ladder has 30 kilogram mass. obtain the magnitude of the force exerted by ladder on wall
An outside loudspeaker (considered a small source) emits sound waves with a power output of 90 W. Find the intensity level in decibels at that distance
a. a lever is used to lift a heavy load. when a 40 n force pushes one end of the lever down 2.2 m the load rises 0.8 m.
A proton accelerates from rest in a uniform electric field of 690 N/C. At one later moment, its speed is 1.30 Mm/s, Find the acceleration of the proton
If you are in a car accident with an initial speed of 119 km/h and you are stopped by an airbag that inflates from the dashboard, over what distance should the airbag stop you for you to survive the crash.
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