Answer:
12.02 m/s north of east
Explanation:
Let be the horizontal and vertical velocity of the 3rd piece, positive in the East and North direction. Also let m be the mass of the 2 smaller pieces, so 2m is the mass of the 3rd piece.
We can solve for the 2 velocities components using law of momentum conservation. Before the explosion, the total momentum was 0 because the coconut was at rest. After the explosion:
- In the x direction:
negative 17 because 1 piece flew west
- In the y direction
negative 17 because 1 piece flew south
So the speed and direction of the 3rd piece is
north of east
Answer:
Question doesn't make sense
The conservation of energy equation?
K1 + U1 = K2 + U2
Or the Kinetic energy equation?
KE = 1/2 mv²
Gravitational potential energy?
Ug = mgΔy
Elastic potential energy?
Ue = 1/2 kx²
The tip of the fan moves through the outer side of the circle.
So it moves a distance of perimeter of circle in one revolution.
Perimeter of circle = 2r, where r is the radius of circle.
In this case radius of circular motion = 0.19 meter
So perimeter of circle = 2*0.19 = 0.38 = 1.194 m
So distance does the tip move in one revolution = 1.194 meter
Answer
The current is 0.83 amps .
Option (C) is correct .
Explanation :
Formula for parallel resistors
As given
A combined circuit has two resistors in parallel (10.0 ohms and 14.0 ohms) .
Putting all the values in the above
L.C.M of (10,14) = 70
As given
Another resistors in the series is 5.0 ohms .
Formula
Now by using the ohms law .
Where V is voltage , R is resistance and I is current .
As given
The power source is 9.0 volts .
V = 9 volts
Putting values in ohms law
I = 0.83 amps (Approx)
Therefore the current is 0.83 amps .
Option (C) is correct .