Aparallel plate capacitor with capacitance c is connected to a power supply av, acquiring a charge on its plates. while it is still connected to the power supply, the plate separation is doubled and a dielectric of constant k = 4.20 is inserted into the gap. what is the new charge on the plates in the final state? a) q=0.4769 b) q=2.109 c) q=4.20g d)

The energy released by a chemical reaction can be measured using a calorimeter. when barium hydroxide octahydrate crystals are reacted with dry ammonium chloride inside of a coffee cup calorimeter, the temperature of the 18.00 g of water in the calorimeter decreases from 30.0°c to 8.0°c. the equation for calculating energy absorbed or released by a reaction is: where q is the energy released or absorbed, m is the mass of water in the calorimeter, cp is the specific heat of water, and δt is the observed temperature change. if the specific heat of liquid water is 4.19 j/g·°c, how much energy was absorbed by the reaction?

Using a pedometer, you walk 3000 steps in 20 minutes, so your speed is 150 steps/min. each of your steps is 0.7 m long. what is your speed? 150 steps/min=/s=/h

The frequencies refer to the sample data collected from a population of interest when performing a hypothesis test comparing two or more population proportions.