Because one object can have more things in it. I learned it a t school today.
Answer:
C
Explanation:
From above question we know that
A = 6.2 m
f = 1.6 rad/s
t = 3.5 s
x =?
We know that,
x = Acos(2pie ft)
Putting all values in above eq.
x = 6.2 x cos(2x3.142x1.6x3.5)
x = - 4.8
Displacement can never be negative so ignore - sign.
Answer:
The change in power is 4400 W.
Explanation:
Given that,
Power = 10 kW
Speed = 10 m/s
Increases speed = 12 m/s
Given equation is,
We know that,
The power is,
Put the value of F into the formula
We need to calculate the new power
Using formula for power
Put the value into the formula
We need to calculate the change in power
Using formula of change in power
Put the value into the formula
Hence, The change in power is 4400 W.
Answer:
r=6.05km/hr
z=59.1 degree to the horizontal
Explanation:
A bird is flying east at 5.2 kilometers/hour relative to the air. There's a crosswind blowing at 3.1 kilometers/hour toward the south relative to the ground. What is the bird's velocity relative to the ground? State your answer to one decimal place
can be solved using pythagoras theorem
r^2=o^2+a^2
r^2=5.2^2+3.1^2
r^2=36.65
r=6.1km/hr is te birds velocity relative to the ground
tanz=5.2/3.1
z=tan^-1(5,2/3.1)
z=59.1 degree to the horizontal