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Three laws of motions

Finn and Jake saw a carousel-a horizontal rotating platform- with radiuse when they decided to ride with it. As they accelerate, the movement of the carousel is at constant speed unit it has reached an angular velocity after 2 complete revolutions. What is the angular acceleration of the carousel during this time?

1. What is Van De Graaf Generator?

2. Why does the hair of Mr. Bean didn't stand when he touched the Van De Graaf Generator?

3. What kind of charging process occur when Mr. Bean walked near the trashcan?

4. What kind of charging process occur when Mr. Bean shakes hand with the security guard?

5. Define charging by conduction and charging by induction.


2. A ship sails 10 miles northward and then 15 miles east ward. How far is it from the starting point?






The volume of a gas increases from 3Litres to 9Litres at a constant pressure of 4atm. Next,heat is added to increase the pressure to 10atm at constant finally heat is removed to decrease the pressure and volume back to the original values in a straight line path.

(a) Draw a PV-diagram

(b) Calculate the total workdone in this process.

Leave your answer in joules


How far does the electron of a hydrogen atom have to be moved from the nucleus for the force of attraction in the electron to equal the weight at the earth surface. Mass of earth, proton and nucleus are given. Also given are charge of an electron, proton. Mass of neutron is given as 0

Hello.


I am trying to calculate the ground reaction forces of a horse walking as I have got the reaction force of them standing in one spot. The weight of the horse is 500kg and distributed 52% of weight on the front legs. The answer for both front legs was 2548N and one leg being half of this. I am wondering how to get the forces of the horse was walking on a hard surface such as concrete

thanks


The plunger and the needle of a hypodermic syringe have areas of 0.5 cm2 and 0.0006 cm2 , respectively. To inject a vaccine, a nurse pushes the plunger with a force of 5.5 N. What pressure is transmitted to the vaccine?

A particle moves along the x-axis according to the expression x=3t² - 2t where x is in m and t is in s. What is the displacement of the particle in time intervals t=0 to t=1s and t=1s to t=4s


A piece of iron placed on a block of wood makes it float lower in the water, If the iron were instead suspended beneath the wood, would it float as low, lower, or higher? Defend your answer.

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