Please look at the attached awesome drawing.
Both answers are there.
Answer:
B) 40 km West
Explanation:
Let position of B is origin so with respect of City B the position of A is given as
south of city B
now Bus starts from City A and travels a distance of 50 km at 37 degree North of East to reach city C
so it is
now the position of C is given with respect to A
in order to find the position of C with respect to B we can say
so in order to reach at city B from city C bus has to travel 40 km towards West
Answer:
0.434 m
Explanation:
We are given that
Mass per unit length=
1 kg=1000 g
Tension=350 N
Fundamental frequency=f=440 Hz
We have to find the length you should make it.
We know that
Using the formula
l=0.434 m
Hence, you should make it 0.434 m long.
Answer:
Explanation:
1. The gravitational force is related to the mass of each object.
This is true, the gravitational force between the two objects is directly proportional to the product of masses of two objects.
2. The gravitational force on a satellite is less at an altitude of 500 km above the Earth than at an altitude of 1000 km.
It is false, as the gravitational force between two objects is inversely proportional to the square of distance between them. The objects at more height has less gravitational force.
3. The gravitational force between the Earth and a person is constant, no matter how high the person is above the surface of the Earth.
It is false, because as we go on heights the value of acceleration due to gravity decreases.
Answer:
Radius of aluminium sphere which has same mass as of sphere of iron with radius 14 m is 40.745 meters.
Explanation:
Let the radius of aluminium sphere be
From the relation between density, mass and volume we know that
Applying equation 'i' separately to iron and aluminium sphere we get
Equating the masses of iron and aluminium spheres we get