posted by ntombi .
An electron and a proton are released from rest at a considerable distance from each other and are completely free to move. Which of the following statements is true concerning their motion after being released?
A Their accelerations gradually increase.
B Their speeds increase at a constant rate.
C Their speeds gradually decrease to zero.
D Their accelerations gradually decrease to zero.
The specific heat capacity of copper metal is 0.385 J/g·K. How much energy is required to heat 258 g of copper from -17.2°C to 10.6°C?