elastic potential energy
kinetic energy
radiant energy
thermal energy
When a spring is compressed, its potential energy is increased. Specifically, the form of potential energy that increases is called elastic potential energy. The correct answer is "elastic potential energy."
When a spring is compressed, work is done to compress the spring, and this work is stored in the spring as potential energy. The potential energy is stored in the spring in the form of potential energy associated with its deformation, which is called elastic potential energy. When the spring is released, the stored potential energy is converted back into kinetic energy, which causes the spring to expand or oscillate.
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Penn Foster Students: less than the angle of refraction
B. Colloids
C. Electrolytes
D. Ions
i belive the correct answer is D
Earth’s gravitational field strength at this
location?
(1) 4.9 N/kg (3) 9.8 N/kg
(2) 2.0 N/kg (4) 20. N/kg
The correct answer is: Option (3) 9.8 N/kg
Explanation:
According to Newton's Law of Gravitation:
--- (1)
Where G = Gravitational constant = 6.67408 × 10⁻¹¹ m³ kg⁻¹ s⁻²
m = Mass of the body = 2 kg
M = Mass of the Earth = 5.972 × 10²⁴ kg
R = Distance of the object from the center of the Earth = Radius of the Earth + Object's distance from the surface of the Earth = (6371 * 10³) + 3.0 = 6371003 m
Plug in the values in (1):
(1)=>
Now that we have force strength at the location, we can use:
Force = mass * gravitational-field-strength
Plug in the values:
19.63 = 2.0 * gravitational-field-strength
gravitational-field-strength = 19.63/2 = 9.82 N/kg
Hence the correct answer is Option (3) 9.8 N/kg