Answer:
Explanation:
Let assume that cooling water works under a pressure of 1 atmosphere. The time required to boil half of the water is determined by the First Law of Thermodynamics:
A = horizontal displacement of the humming bird = 1.2 m
B = vertical displacement of the humming bird = 1.4 m
C = net displacement of the humming bird from initial to final position = ?
In the triangle drawn , Using Pythagorean theorem
C = √(A² + B²)
inserting the values
C = √(1.2² + 1.4²)
C = √(1.44 + 1.96)
C = √(3.4)
C = 1.4 m
Hence the net displacement of hummingbird comes out to be 1.4 m
Answer:
a)10.08 m/s
b)3.36 m/s
Explanation:
Given that
distance s₁= 160 m
time t₁= 17 s
distance s₂= 80 m
time t₂ = 6.8 s
As we know that
Total distance = Total time x Average speed
s₁ + s₂ = (t₁ + t₂ ) Vavg
Vavg=10.08 m/s
Total displacement = Total time x Average velocity
s₁ - s₂ = (t₁ + t₂ ) Vavg
Vavg=3.36 m/s
a)10.08 m/s
b)3.36 m/s
Answer:
It acts perpendicular to the velocity and is directed toward the center of the circle.
Explanation:
For a force to make an object move in a circular motion, the force must act perpendicular to the velocity and directed toward the center of the circle of motion as shown in the attached image.