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3 years ago

Why is the mass of an atom’s electrons not included in the atom’s mass number

1 answer:

7 0

The electron is so light and so little mass that it basically adds nothing to the mass so the scientists decided not to include it

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Please help

mafiozo [28]

Answer:

displacement=specific distance

*Velocity=∆displacement/time

*acceleration=∆velocity/time

7 0

3 years ago

What is the genotype for a woman with no freckles?

SIZIF [17.4K]

Well are having freckles recessive or dominant?

6 0

3 years ago

Read 2 more answers

The rectangular coils in a 345-turn generator are 12 cm by 12 cm. Part A

Likurg_2 [28]

Answer:

118.166 volt

Explanation:

We have given number of turns N =345

Sides of the rectangular coils is 12 cm =0.12 m

So area A =0.12×0.12=0.0144 $m^2$

Magnetic field B =0.45 T

Angular speed =505 rpm

Speed in rad/sec $\omega =\frac{2\pi N}{60}=\frac{2\times 3.14\times 505}{60}=52.8566rad/sec$

The emf is given by $E=NAB\omega SIN\omega t$

For maximum emf sinwt =1

So $E=345\times 0.0144\times 0.45\times 52.8566=118.166volt$

4 0

3 years ago

If a net force acting on a moving object causes its speed to increase, what

Klio2033 [76]

Answer:

It increases.

Explanation:

If a force acts in the same direction as the object's motion, then the force speeds the object up. Either way, a force will change the velocity of an object. And if the velocity of the object is changed, then the momentum of the object is changed.

7 0

3 years ago

How high a hill can a car coast up (engine disengaged) if work done by friction is negligible and

aev [14]

Answer:

h= 46.66 m

Explanation:

Given that

Initial speed of the car ,u = 110 km/h

We know that

1 km/h= 0.277 m/s

u= 30.55 m/s

lets height gain by car is h.

The final speed of the car will be zero at height h.

v²=u²- 2 g h

v= 0 m/s

0²=30.55²- 2 x 10 x h ( g = 10 m/s²)

h= 46.66 m

4 0

3 years ago