Asled with a mass 53.0 kg is pulled along flat, snow-covered ground. the static friction coefficient is 0.30, and the kinetic friction coefficient is 0.10. (a) what does the sled weigh? 519.75245151792 n (b) what force will be needed to start the sled moving? n (c) what force is needed to keep the sled moving at a constant velocity? n (d) once moving, what total force must be applied to the sled to accelerate it at 2.6 m/s2? n

What is the relationship between the wavelength of a wave and it's energy?

Identify the type of synthetic material used in each object

In which situation has the independent variable for the experiment been changed? check all that apply. changed from counting the number of duckweed at day 0 and day 14 to counting them every day changed from testing duckweed growth in beakers to testing duckweed growth in large outdoor tanks changed from testing the effect of ph on duckweed growth to testing the effect of light levels on duckweed growth changed from testing the effect of acid ph on duckweed growth to testing the effect of basic ph on duckweed growth