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A 1.0 gram balloon is filled with helium gas until it becomes a 20 centimeter diameter sphere. Determine what maximum mass can be tied to the balloon (with a mass less string) without the balloon sinking to the floor?
A 2-dimensional, infinite corral is square with edge length L =150 pm. Determine the probability of detection if the electron is in the E1,3energy state
How would you describe why we have different atmospheric pressure on different level (height) of earth's atmosphere in molecular level (molecular behaviour and what causes such behaviour).
Near Earth, the density of protons in the solar wind (a stream of particles from the Sun) is 8.30 cm-3 and their speed is about 460 km/s. Find the current density of these protons
A converging (lens f=+12cm) in contact with a diverging lens gives a combined focal length of +36 cm, calculate the focal length of the diverging lens
A spring is resting vertically on a table. A small box is dropped onto the top of the spring and compresses it. Determine the magnitude of the spring's displacement at an instant when the acceleration of the box is zero
200 ml of coffee ( density = 1000kg/m^3 , specific heat 4186j/kg C ) is insulated in a mug at a temp of 85C. If 25ml of cream ( density of 1500 kg/ m^3 , specific heat 4500j / kg C at 10 C is added what will be the new temperature of the system?
A bar of length 2 cm slides along metal rails at a speed of 1 cm/s. The bar and rails are in a magnectic field of 2 T, pointing out of the page. what is the induced emf in the bar and rails
Three blocks, each of mass 9 kg are on a frictionless table. A hand pushes on the left most box (A) such that the three boxes accelerate in the positive horizontal direction, What is the magnitude of the force on block A from the hand
A trolley bus whose mass is 104 kg takes 10 s toreach a speed of 8 m/s starting from rest. What is the average current drawn by the bus
A 3.0-kg particle has a position vector given by r=(2.0t^2i+3.0j) where r is in meters and t is in seconds. What is the angular momentum of the particle
An injured monkey sits perched on a tree branch 3.0 m above the ground, what is minimum speed the tranquilizer dart must leave the gun to still hit the monkey
A solid sphere is released from rest on an incline. When it reaches the bottom, what fraction of its total kinetic energy is rotational
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