Answer:
The correct answer is V√5
Explanation:
Let V be the velocity of the satellite orbiting at radius r.
Let V(5r) be the velocity of the satellite orbiting at radius 5r.
Recall:
Escape velocity is given by:
V = √(2gr)
Where V is the escape velocity
g is the acceleration due to gravity
r is the radius of the earth.
With the above equation, we can obtain the answer to the question as follow:
V = √(2gr)
V(5r) = √(2g5r)
Next, we'll obtained the ratio of V(5r) to V as shown below
V(5r) : V => V(5r)/V
V(5r)/V = √(2g5r) / √(2gr)
V(5r)/V = √5
Cross multiply
V(5r) = V√5
From the above illustration, we can see that when the satellite is moved to 3r, then the expression for the velocity will be V√5
Answer:
The human activity that uses the most water worldwide is for agriculture. In other words, watering crops.
Explanation:
pls mark brainliest
The theodolite is a precision measuring device used to measure horizontal and vertical angles. It works with a combination of: (1) optical plummets, which is used to ensure that it is placed exactly vertical above; (2) internal spirit, which ensures that it is levelled to the horizon; and (3) graduated circles, one vertical and one horizontal, which is used to measure actual angles. The mounted telescope can swivel horizontally and vertically. If this is adjusted correctly, accurate measurements can be obtained.
Answer:
Interpolation gives more accurate data or points compared to extrapolation.
Interpolation can be a little easier than extrapolation.
Interpolation does not require one to extend the already existing data points, where extrapolation requires elaboration of the pattern, curve, or line.
Extrapolation:
This is a statistical method used to predict unknown values for points outside the range of the recorded data. It is used to extend a known sequence of values beyond the sampled area
Extrapolation: with Extrapolation, we can be less confident with the unknown values derived using this method. The method includes values from outside the sampled area, which makes the predictions diverge away from the true values. In curve fitting, this method is not preferred.
Extrapolation:
the ability to retrieve negative answers is one characteristic that makes it unique for interpolation. This statistical method allows one to extend the values in the range either forward or backward. This technique of extending values is responsible for attaining the negative values.
Explanation:
Answer:
Accelerate up more compressed spring
Accelerate down spring less compressed
Explanation:
For this problem we must analyze the forces that act on the scale on the one hand the weight of the man directed downwards and I have the other the elastic force of the spring directed upwards. Now let's write Newton's second law for these forces in various configurations,
When the elevator is quiet or moving at constant speed
Fe - W = 0 ⇒ Fe = W -k x = mg x = mg /k
Fe = mg
We use this value to compare
Now let's analyze when the elevator accelerates upwards
Fe -W = m a
Fe = ma + W
Fe = m (a + g)
So we can see that Fe increases, so the compression of springs is higher
Now let's analyze when the elevator acceleration is down
Fe -W = m (-a)
Fe = w - m a
Fe = m (g -a)
In this case Fe is smaller, so the compression of the spring is less
