Answer:
ultrasound: high pitch, above the human range of hearing, reflects back
infrasound: longitudinal waves, in the human range, low pitch
Explanation:
Answer:
1. 3) only a constant gravitation force that acts downward
2. b) Equal to the accleration at the surface of the asteroidc)
Explanation:
1.
- In absence of atmosphere, the force that will act on the steroid is the force of gravity due to asteroid.
- Gravitational force is a long range force acting always attractive in nature.
- It is a contact-less field force which does not requires a medium.
Mathematically given as:
where:
G = gravitational constant
are the mass of the two objects
radial distance between the two objects.
2.
The acceleration of the ball at the top height of the path is still under the influence of the gravity of the two masses so it will be equal to the acceleration due to gravity at the surface of the asteroid. Acceleration always remains constant.
Answer:
B) Absorbed energy results in the change in potential energy.
Explanation:
i got it wrong on usatestpreo
White marble is a white surface
Answer:
A. Conduction
Explanation:
Conduction is the transfer of heat within the material itself, and he's holding the metal bar over the fire.