Answer:
<em>W= 47</em>
Explanation:
Given:
m = 72 kg
F = 165 N along horizontal
s = 2.8 m
\mu = 0.21
The net force acting on the box is
W= 165-(0.21 * 72 * 9.81)) * 2.8
W= 46,68384
W= 47
The simplest answer would be "acceleration due to gravity."
The exact value of this acceleration changes depending on which planet your on (for example).
The oldest lunar rock samples are approximately 4.4 billion years old and composed of anorthosite, a mineral that crystallizes and rises to the top of a lava ocean.
Answer:
if the resistor is fitted in series with the bulb , then the current flowing will be 0.15 A.....
if the resistor if fitted in parallel with the bulb ,
the current flowing will be 0.6 A
Explanation:
total potential difference = 1.5V
when resistors in series ,
total equivalent resistance is = 5 + 5 = 10 ohm
so current = 1.5 ÷ 10 = 0.15
when resistors in parallel ,
total equivalent resistance is = (5 × 5)÷(5 + 5) =2.5 ohm
so current = 1.5÷2.5 = 0.6 A
So.......
here,
Mass (m) = 20g
Change in Temperature (ΔT) = 29C-10C
= 19C
Specific Heat Capacity = 0.1 cal/ g C
now, plug the info. into the formula,
specific heat capacity = quantity of heat / (mass * change in temperature)
0.1 = quantity of heat / (20 * 19)
0.1 = quantiy of heat / 380
0.1 * 380 = quantity of heat
38 = quantity of heat
so the granite rock boulder absorbed 38 calories of heat energy from the sun