<span>Back in the day, one measured a printer's speed in CPM, which stands for characters per minute. Most of the modern printers that exist today, including the inkjet printer measure their speed in PPM, which is also known as pages per minute.</span>
Answer:
1000 cm.
Explanation:
To obtain the estimated tree height :
(Height of rod / length of rod shadow) = (height of tree / length of tree shadow)
Substituting values into the formula :
(150cm / 120 cm) = (height of tree / 800 cm)
Using cross multiplication :
Height of tree * 120 = 150 * 800
Height of tree = (150 * 800) / 120
Height of tree = 120,000 / 120
Height of tree = 1000
Hence, estimate height of tree = 1000 cm
160w/4 = 40w
1000J/ 4= 250J
a 40w light bulb will consume 250J
Answer:
0.25
Explanation:
Friction force is the normal force times the coefficient of friction.
F = Nμ
50 N = (200 N) μ
μ = 0.25
Answer:
= 5.74W
=0.27 W
Explanation:
d= 2.6cm =>0.026m (for both the ceramic and the carpet )
Thermal conductivity of wool '
'= 
= 
= 0.04J/(sm °C)
Thermal conducticity of carpet '
' = 0.84 J/(sm °C)
Area 'A'= 
= 
= 77.2cm²=> 77.2 x 
m²
=33.0°C
=10.0°C
Average Power 
is determined by dividing amount of energy'Q' by time taken for the transfer't':
= Q/Δt
Due to conductivity, heat of flow rate will be P= dQ/dt
P=
= ![\frac{kA[T_{h}-T_{c} ]}{d}](https://tex.z-dn.net/?f=%5Cfrac%7BkA%5BT_%7Bh%7D-T_%7Bc%7D%20%5D%7D%7Bd%7D)
For CERAMIC:
=![\frac{k_{c} A[T_{h}-T_{c} ]}{d}](https://tex.z-dn.net/?f=%5Cfrac%7Bk_%7Bc%7D%20A%5BT_%7Bh%7D-T_%7Bc%7D%20%5D%7D%7Bd%7D)
=> [0.84 x 77.2 x (33-10) ]/0.026
= 5.74W
For WOOL CARPET:
= ![\frac{k_{w} A[T_{h}-T_{c} ]}{d}](https://tex.z-dn.net/?f=%5Cfrac%7Bk_%7Bw%7D%20A%5BT_%7Bh%7D-T_%7Bc%7D%20%5D%7D%7Bd%7D)
=> [0.04 x 77.2 x (33-10) ]/0.026
=0.27 W
