Answer:
A
Explanation:
The most important part about this is not only that objects pull on each other, but that two objects attract each other with a force that is proportional to the product of their masses and inversely proportional to the square of the distance between them. This is known as Newton's law of universal gravitation.
Answer:
Kinetic energy is 242.7 Joule
Explanation:
m = 47.4 kg
v = 3.2m/s²
Now,
K.E. = 1/2 × m × v²
or, K.E. = 1/2 × 47.4 × 3.2²
or, K.E. = 242.7 Joule
Answer:
Electromagnetic waves are waves that have no medium to travel whereas mechanical waves need a medium for its transmission. Electromagnetic waves travel in a vacuum whereas mechanical waves do not. While an electromagnetic wave is called just a disturbance, a mechanical wave is considered a periodic disturbance.
Explanation:
sorry if wronggggggggggggggggggg
Explanation:
Newton's second law shows that there is a direct relation ship between force and acceleration . the grater force that is applied on a object of given mass the more the accelerate. for example doubling the force in the object doubles it's acceleration.
Answer:
Explanation:
given,
mass of hoop = 2.75 Kg
horizontal speed = 4.5 m/s
angle with horizontal = 25°
m g l sin θ = m ( v² - u² )
g l sin θ = ( v² - u² )
9.8 x 3 x sin 25° = ( v² - 4.5² )
12.425 = v² - 20.25
v² = 32.675
v = 5.72 m/s
Rotational