Answer:
There are total eight planets in the solar system and the average distance from the sun to each planet in increasing order is given below.
Explanation:
The average distance from the sun is listed below in increasing order.
1. Mercury - It is the most closet planet to Sun, 57 million km
2. Venus - 108 million km
3. Earth - 150 million km
4. Mars - 228 million km
5. Jupiter - 779 million km
6. Saturn - 1.43 billion km
7. Uranus - 2.88 billion km
8. Neptun - It is the most farthest from the Sun, 4.50 billion km
Answer
given,
mass of the astronaut = 66 kg
height of the lift = 15 m
acceleration = g/11 = 0.89 m/s²
a) the work done by helicopter
W = F× h
= m (a+g)h
= 66 × (9.8+0.89)15
W =10583.1 J
b) work done by the gravity
W= mgh
W = - 66 × 9.8 × 15
W = -9702 J
c) Δ KE = net work done
Δ KE = 10583.1 - 9702
Δ KE = 881.1 J
d) speed
v =5.17 m/s
Answer:d
Explanation:
Given
First car is moving towards east with velocity 20 m/s
then it turns towards north then velocity is
suppose car takes t sec to change its path so average acceleration is given by
So average acceleration is towards North of west.
The correct option is d
<span>Weight changes depending on distance from the earth, mass does not.
Weight can be defined as the force exerted on an object due to the effects of gravity.
As we move far away from the Earth, the effects of gravity lessen and thus the weight decreases. (But the mass remains constant, because it only depends on the volume and density of the object)
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<span>The nature of potential energy is that the zero point is arbitrary; it can be set like the origin of a coordinate system. That is not to say that it is insignificant; once the zero of potential energy is set, then every value of potential energy is measured with respect to that zero. Another way of saying it is that it is the change in potential energy which has physical significance.
Hope this Helps! </span>