Blake pulls a stationary 20 kg box to the right with a force of 500
N. The coefficient of friction (u)
between the block and the
ground is 0.25 as it accelerates
across the floor. What is the
acceleration in m/s?? 1.22.5475
2. 24.9875
03. 24.7548
04. 15.333
5. 20.2554
6. 20.6840
7. 24.5667
8. 22.1155

You've already seen the value of 9.8 in this lesson. what's this value called? what quantity does it represent?

Which of the following changes will increase the capacitance of a parallel-plate capacitor? (there could be more than one correct choice.) a) increase the charge on the plates b) decrease the poten5al between the plates c) increase the potential between the plates d) introduce a dielectric material between the plates e) decrease the separation between the plates

What is the orbital period of a spacecraft in a low orbit near the surface of mars? the radius of mars is 3.4×106m.