Answer:
The acceleration of the sled is 
.
Explanation:
It is given that,
Initial speed of sled is 0 because it was at rest.
It is placed at an angle of 28° on a frictionless hill.
We need to find the acceleration of the sled. It is placed at an incline. It means that the acceleration of the sled is given by :
So, the acceleration of the sled is .
Answer: attractive
Explanation:
According to Newton's law of Gravitation, the gravitational force 
exerted between two bodies of masses 
and 
and separated by a distance 
is equal to the product of their masses and inversely proportional to the square of the distance:
Where:
is the Gravitational Constant
and are the masses of the objects
is the distance between the objects
It should be noted: this force is a central force and is attractive.
Answer:
There are basically seven spectral types which are used for classifying the stars and it is arranged in the order of increasing temperature from the hottest temperature to the coldest division are: O, B, A, F, G, K, and M. These categories are basically divided into the sub category in the spectral where O is the hottest type and M is the coldest type.
Speed = (distance covered) / (time to cover the distance)..
From the ground to the highest point,
the rocket's AVERAGE speed is
(86 m) / (3.7 sec) = 23.2 m/s (rounded) .
Answer:
15000 m/s
Explanation:
You just need to multiply the wavelength with the frequency.
