The wedge is part of a can opener. what is the purpose of using the wedge? a) it moves. b)it changes the direction of the force to a horizontal motion. c)it is not important to the machine. d)it changes the amount of force needed. - , for any ! : )

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?

4. if you were an astronaut on the moon, what would you experience? what would you see from your perspective?

Frequency of electromagnetic waves that a radio station is assigned is called