A 250 g stone is shot vertically from a sling whose effective spring constant is 750 N/m. If the sling is drawn 50 cm before shooting, to what height will the stone rise

According to social exchange theory, altruistic behaviors benefit the individual who performs them.

Charge is distributed along the entire x-axis with uniform density λ. how much work does the electric field of this charge distribution do on an electron that moves along the y-axis from y = a to y = b? (use the following as necessary: a, b, ε0, λ, and q for the charge on an electron.)

If anyone who can me with this hw? i would really appreciate it