Answer:
s=vt2 just simplify all into metric units first
Answer:
B) 10 microJoule
Explanation:
Given
v = 100 micrometer/s
F = 0.1 N
t = 1 s
we get the displacement as follows
d = v*t ⇒ d = (100 micrometer/s)*(1 s) = 100 micrometer
then we apply the formula
W = F*d*Cos ∅
⇒ W = (0.1 N)*(100 micrometer)*Cos 0°
⇒ W = 10 microJoule
Answer:
x -component of dog's velocity = 8.265m/s
y- component of dog's velocity = 1.389m/s
Explanation:
The detailed and step by step calculation is as shown in the attached file.
Answer:
The speed of the water shoot out of the hole is 20 m/s.
(d) is correct option.
Explanation:
Given that,
Height = 20 m
We need to calculate the velocity
Using formula Bernoulli equation
Where,
v₁= initial velocity
v₂=final velocity
h₁=total height
h₂=height of the hole from the base
Put the value into the formula
Hence, The speed of the water shoot out of the hole is 20 m/s.
Answer:
10.85 m/s
Explanation:
m = 1200 kg, h1 = 19 m, h2 = 13 m
Let v be the velocity
Use the conservation of energy
Potential energy at 19 m = Potential energy at 13 m + kinetic energy
m x g x h1 = m x g x h2 + 1/2 mv^2
m x g (h1 - h2) = 0.5 x m v^2
g (h1 - h2) = 0.5 v^2
9.8 (19 - 13) = 0.5 x v^2
v = 10.85 m/s