Answer:
Fc = 89.67N
Explanation:
Since the rope is unstretchable, the total length will always be 34m.
From the attached diagram, you can see that we can calculate the new separation distance from the tree and the stucked car H as follows:
L1+L2=34m
Replacing this value in the previous equation:
Solving for H:
We can now, calculate the angle between L1 and the 2m segment:
If we make a sum of forces in the midpoint of the rope we get:
where T is the tension on the rope and F is the exerted force of 87N.
Solving for T, we get the tension on the rope which is equal to the force exerted on the car:
Answer:
Kinetic energy
Explanation:
When a pendulum is swinging about its mean position, the total energy is conserved.
At the mean position, the kinetic energy is maximum but the potential energy is zero.
At the extreme position, the potential energy is maximum but the kinetic energy is zero.
Explanation:
1) Kicking a ball.
2) Capture the ball by hand.
3) Push a car.
1. Physical Property
2. Chemical Change
3. Chemical Change
4. Chemical Property
5. Physical Property
6. Physical Change
7. Chemical Change
8. Physical Change
9. Chemical Change
10. Physical Property
11. Physical Property
12. Chemical Change
13. Chemical Change
14. Chemical Property
15. Chemical Change
Explanation:
Physical Property: A property of matter that can be seen, felt, tasted, smelled, or heard.
Physical Change: The change of an object of matter's physical property/properties.
Chemical Property: An element/object of matter's internal property/properties
Chemical Change: An element/object of matter's internal property/properties being altered or changed
Answer:
D) diffraction
Explanation:
Corona is an optical phenomenon produced by the diffraction of sunlight or moonlight, as light moves through water droplets in the atmosphere.
This phenomenon produces one or more diffuse concentric rings of light around the Sun or Moon, usually seen as colored circles.
Therefore, the explanation for these phenomena of colored concentric circles, sometimes seen with the Sun or the Moon involves diffraction.
