A little girl (30 kg) goes sledding with her friends. The hill the girl starts on is 7 meters tall. She reaches a speed of 6.26 m/s when she is 5 meters above the bottom of the hill. What is her mechanical energy when she is 5 meters above the ground?

The act of moving from one place to another. a. locomotor b. aerobic c. stationary d. static

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.)

Matter that emits no light at any wavelength is called