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An 80kg man falls our of a 1.5m tree starting at 0 speed. How much potential energy does he start with in the tree? When he hits the ground he loses all potential energy. Where did hid inital energy go? He travels while in contact with the ground .5cm. Calculate the amt of force the ground will excert on him in this scenerio. If he were to bend his kones his body travels downward .6m while his feet are in contact with the ground. Calculate the grounds force now converted to pounds.
A 4.00-microF capacitor that is initially uncharged is connected in series with a 7.90-k ohm resistor and an emf source with E = 120 V and negligible internal resistance. what is the voltage drop across the resistor
A 3-kg steel ball strikes a wall with a speed of 13-m/s at an angle of 60.0° with the surface. It bounces off with the similar speed and angle. If the ball is in contact with the wall for 0.20s, what is the average force exerted by the wall on the..
A resonant circuit in a radio receiver is tuned to a certain station when the inductor has a value of 0.196 mH and the capacitor has a value of 28.2 pF. Calculate the frequency of the radio station
A laser beam is incident at an angle of 29.2° to the vertical onto a solution of corn syrup in water. what is the index of refraction of the syrup solution
A submerged scuba diver looks up toward the calm surface of a freshwater lake and notes that the Sun appears to be 32 degrees from the vertical. At what angle above the horizon does the friend see the sun
Find the resistance of the following. Power ratings are based on the assumption of a potential difference of 120 V, rms across the terminals.
A student drops two metallic objects into a 120 g steel container holding 150 g of water at 25°C. What is the mass of the aluminum chunk
What is the total negative charge, in coulombs, of all the electrons in a small 1.05g sphere of carbon? One mole of C is 12.0g, and each atom contains 6 protons and 6 electrons.
Apartment dweller will testify that bass notes are more distincty heard from music played in nearby apartments. Why do you supposelower frequency sound get through walls floors and ceiling moreeasily?
The pulley system in Figure below is used to lift a 52-kg crate. Note that a chain connects the upper pulley to the ceiling, determine the tension in each chain
1. given the energy range of a radiation source to be 0.5 ev. calculate the same energy range in joules. dont use the
What is the horizontal distance x (in metres) to the base of the wall supporting the mirror of the nearest point of the floor that can be seen reflected in mirror.
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