Before hanging new william morris wallpaper in her bedroom, brenda sanded the walls lightly to smooth out some irregularities on the surface. the sanding block weighs 1.70 n and brenda pushes on it with a force of 3.00 n at an angle of 30.0° with respect to the vertical, and angled toward the wall. what is the coefficient of kinetic friction between the wall and the block?

1.0193

Explanation:

The concepts that we apply here is Frictional Force with a Force on the object with a angle.

We know that Frictional Force is equal to

The force acts downward because the moving is upward, then from the image that I attached, the forve is equal to,

In Y we have then

For the horizontal componentes we have that

Using the first equation we have that

Re-arrange for

explanation:

earth's surface is mainly heated by the absorption of infrared radiation from the sun.

evaporation occurs because molecules in liquid water are warmed ( usually by the sun) and vibrate quicker, becoming less dense and rise.

condensation occurs because molecules in water vapor are cooled and therefore vibrate more slowly thus becoming more dense and eventually fall to earth.

lines of equal barometric pressure on a weather map are called: isobars : lines of equal temp on a weather map are called: isotherms.​

what was the acceleration of the 2 kg cart?

⇒ 16.0 cm/s2

what was the acceleration of the 4 kg cart?

⇒ 8.1 cm/s2

what was the acceleration of the 6 kg cart?

⇒ 5.3 cm/s2