Asmall block of mass m slides on a horizontal frictionless surface as it travels around the inside of a hoop of radius r. the coefficient of friction between the block and the wall is mu; therefore, the speed v of the block decreases. in terms of m, r. mu, and v, find expressions for each of the following. b. the block's tangential acceleration dv/dt c. the time required to reduce the speed of the block from an initial value v0 to vo/3

On a day when the barometer reads 75.23 cm, a reaction vessel holds 250 ml of ideal gas at 20 celsius. an oil manometer ( ρ= 810 kg/m^3) reads the pressure in the vessel to be 41 cm of oil and below atmospheric pressure. what volume will the gas occupy under s.t.p.?

Atank is filled with an ideal gas at 400 k and pressure of 1.00 atm . part a the tank is heated until the pressure of the gas in the tank doubles. what is the temperature of the gas?

Which of these statements best explains how the hydrosphere interacts with the atmosphere to affect global climate? mountains block rain clouds and cause changes in global rainfall and evaporation. humans burn fossil fuels to produce greenhouse gases which cause global warming. humans cut down trees which affects the amount of oxygen in different parts of the globe. greenhouse gases, like carbon dioxide, dissolve in oceans and prevent global warming.