Answer:
A) 3.48m/s
B) 3.92m
C) 2.32m
D 23.33m/s
Explanation:
ma(t)=mg-At
a(t)= g - (At/m)
V(t)= integrala(T)dT = gt- (At^2/2m)
Initial x coordinator of the box is zero
X(t)= integralV(t)dt= 1/2gt^2-(At^3/6m)
a) V =( 9.81×1) -(38×1^2/2×3)
V= 9.81-6.33= 3.48m/s
b)-AT^2/2m + gT= 0
T=2mg/A= (2×3×9.81)/38
T= 1.549m
X(T)= (1/2×9.81×1.549^3)- (38×1.549^3/6×3)
X(T)= 11.768- (141.23/18) = 11.768 - 7.85= 3.92m
C) 1/2gT''^2 - AT''^3/6m =0
The only non trivial solution is T''= 3mg/A
T=(3×3×9.81)/38 = 2.32m
D) V = 9.81×3) - (38×3^2/6)
V= 29 - 5.667= 23.33m/s
The amount of heat will be equal to Lm.
Where L is the latent heat of fusion and m is mass of the ice.
Latent heat of ice = 80cal/g.
So the amount of heat required here will be 35× 80cal
= 2,800 cal.
It is called a photon i believe
Answer:
100.390407
Explanation:
To find acceleration, you would use the formula a=f/m (acceleration equals force divided by mass) and then once you enter those numbers in the formula, a=180/1.793. Then you divide 180 divided by 1.793 which gets you an answer of 100.390407.
They will be travelling slower than 10mph.
if they were travelling at the same speed then they would stay an equal distance apart.
if they were travelling fatser then they would be getting further away more quickly than Bobby is catching up.
maybe they are travelling at 5mph but I'd say it's a safer option to chose under 10mph
