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aleksklad [387]

3 years ago

15

Why couldn't the Royal Society publish Newton's Principia?

1 answer:

Gemiola [76]3 years ago

8 0

Answer:

The Principia was eventually published in 1687. After publishing the work, the Royal Society told Halley it could no longer afford his salary and offered to pay him in unsold copies of the Historia Piscium instead.

Explanation:

But the Royal Society refused to fund the book because it had suffered huge financial losses publishing 'The History of Fish', an indigestible tome of piscine anatomy which barely sold and nearly bankrupted the institution.

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An impulse always produces a change in <br> A. momentum<br> B. speed <br> C. direction<br> D. force

Mamont248 [21]

I think A would be the best answer!

3 0

3 years ago

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How much energy is released when the correct number of protons and neutrons come together to form deuterium? a) 0.52 MeV b) 1.7

irga5000 [103]

<u>Answer:</u> The correct answer is 2.24 MeV.

<u>Explanation:</u>

The chemical reaction for the formation of deuterium from proton and neutron follows:

$_{1}^1\textrm{H}+_0^1\textrm{n}\rightarrow _1^2\textrm{H}$

We are given:

Mass of $_{1}^{1}\textrm{H}$ = 1.00784 u

Mass of $_{0}^{1}\textrm{n}$ = 1.008665 u

Mass of $_{1}^{2}\textrm{H}$ = 2.014102 u

To calculate the mass defect, we use the equation:

$\Delta m=\text{Mass of reactants}-\text{Mass of products}$

$\Delta m=(m_{_1^2H}+m_{n})-(m_{_1^2H})\\\\\Delta m=(1.00784+1.008665)-(2.014102)=0.002403u$

To calculate the energy released, we use the equation:

$E=\Delta mc^2\\E=(0.002403u)\times c^2$

$E=(0.002403u)\times (931.5MeV)$ (Conversion factor: $1u=931.5MeV/c^2$ )

$E=2.24MeV$

Hence, the energy released in the given nuclear reaction is 2.24 MeV.

5 0

3 years ago

A rocket achieves a lift-off velocity of 500.0 m/s from rest in 30.0 seconds. Calculate the average acceleration of the rocket.

Anettt [7]

Answer:

The average acceleration is 16.6 m/s² ⇒ 1st answer

Explanation:

A rocket achieves a lift-off velocity of 500.0 m/s from rest in

30.0 seconds

The given is:

→ The initial velocity = 0

→ The final velocity = 500 meters per seconds

→ The time is 30 seconds

Acceleration is the rate of change of velocity of the rocket

→ $a=\frac{v-u}{t}$

where a is the acceleration, v is the final velocity, u is the initial velocity

and t is the time

→ u = 0 , v = 500 m/s , t = 30 s

Substitute these values in the rule

→ $a=\frac{500-0}{30}=\frac{500}{30}=16.6$ m/s²

<em>The average acceleration is 16.6 m/s²</em>

6 0

3 years ago

Unlike a mineral, a rock _____.

vitfil [10]

Answer:

So unlike a mineral, a rock is a substance composed of one or more minerals

Explanation:

Hello ! Let's solve this!

Minerals are simple natural and inorganic substances. Rocks are a set of many minerals.

So unlike a mineral, a rock is a substance composed of one or more minerals

6 0

3 years ago

Which equation is used to calculate the weight of an object on a planet?

Svetach [21]

Weight = (mass) * (acceleration due to gravity on the that planet)

8 0

3 years ago

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