Work is force times distance. If there's no distance, there's no work being done.
Answer:
A boxed 14.0 kg computer monitor is dragged by friction 5.50 m up along the moving surface of a conveyor belt inclined at an angle of 36.9 ∘ above the horizontal. The monitor's speed is a constant 2.30 cm/s.
how much work is done on the monitor by (a) friction, (b) gravity
work(friction) = 453.5J
work(gravity) = -453.5J
Explanation:
Given that,
mass = 14kg
displacement length = 5.50m
displacement angle = 36.9°
velocity = 2.30cm/s
F = ma
work(friction) = mgsinθ .displacement
= (14) (9.81) (5.5sin36.9°)
= 453.5J
work(gravity)
= the influence of gravity oppose the motion of the box and can be pushing down, on the box from and angle of (36.9° + 90°)
= 126.9°
work(gravity) = (14) (9.81) (5.5cos126.9°)
= -453.5J
It means lithium ion.
HOPE I HELPED
Answer:22.6g
Explanation:
Mass of water(mw)=1liter=1000g
Final temperature=20°C
Temperature of ice=0°C
Temperature of water=56°C
Change in temperature of water=56-20=36
change in temperature of ice=20-0=20
Specific heat of water=1cal/g°C
Latent heat of ice=79.7cal/g
1000x1x36=mx79.7x20
36000=1594xm
Divide both sides by 1594
36000 ➗ 1594=1594xm ➗ 1594
22.6=m of ice
m of ice=22.6g
Answer:
exothermic
Explanation:
energy is absorbed by the surroundings
