All categories

2 years ago

How was the gravitational constant G first determined

1 answer:

6 0

<span>In equation form, this is often expressed as follows: The constant of proportionality in this equation is G - the universal gravitation constant. The value of G was not experimentally determined until nearly a century later (1798) by Lord Henry Cavendish using a torsion balance.</span>

You might be interested in

A father wanted to explain how the moon shines to his 5-year old child by comparing it to an object that the child uses. Which s

9966 [12]

Answer:

The moon is like a mirror. It reflects light produced by the Sun

Explanation:

5 0

2 years ago

Read 2 more answers

Podrian ayudarme? Llevo dias intentando pero no se como 1. el profesor no explico

Paraphin [41]

You have to upload this in the area of mathematicians..!

8 0

3 years ago

True or false is Conservation of monestum is the same as Conservation of energy

fiasKO [112]

Answer:

Conservation of Energy: the total energy of the system is constant. Conservation of Momentum: the mass times the velocity of the center of mass is constant. Conservation of Angular Momentum: The total angular momentum of the system is constant.

Explanation:

none

3 0

2 years ago

High voltage power is often carried in wire bundles made up of individual strands. In your initial post to the discussion, discu

Firdavs [7]

Answer:

<em>There will be a huge problem of holding the wire strands together, and the power losses will also be amplified.</em>

Explanation:

The force per unit length on two current carrying conductors, lying parallel to each other is proportional to the product of the current through the conductors, and inversely proportional to their distance apart. This force is attractive if the current flows through these conductors in the same direction, and is repulsive if it flows in the opposite direction.

For the strand of wire that make up a high voltage wire bundle, there will be a force of attraction pulling the wires closer to each other, and they will experience the maximum pulling force possible, since they lie next to each other. This force helps to hold these wires in a high tension wire strand together, limiting the area, and reducing "skin effect."

In the case that this wires in the wire strand acts in opposite of the known behavior, the wires will repel and push each other apart. This pushing apart will increase power loss due "skin effect" which is increased by an increase in exposed surface area of the wire strands. This will pose a big problem for high tension transmission.

6 0

3 years ago

Mass and energy are alternate aspects of a single entity called mass-energy. The relationship between these two physical quantit

Sever21 [200]

Answer:

Explanation:

ΔE = Δm × c^2

where,

ΔE = change in energy released with respect to change in mass

= 1.554 × 10^3 kJ

= 1.554 × 10^6 J

Δm = change in mass

c = the speed of light.

= 3 × 10^8 m/s

Equation of the reaction:

2H2 + O2 --> 2H2O

Mass change in this process, Δm = 1.554 × 10^6/(3 × 10^8)^2

= 1.727 × 10^-11 kg

The change in mass calculated from Einstein equation is small that its effect on formation of product will be negligible. Hence, law of conservation of mass holds correct for chemical reactions.

8 0

2 years ago