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liubo4ka [24]
3 years ago
15

An element emits a spectrum that____________.a)is evenly spaced.b)is the same as all other elements.c)is unique to that element.

d)is indistinguishable from most other elements.e)is evenly spaced and unique to that element.
Physics
1 answer:
Fittoniya [83]3 years ago
5 0

Answer:

c)is unique to that element

Explanation:

 The spectrum emitted by a element shows the internal electronic structure of that element.We know that all element is having different internal electronic structure that is why all element emits different spectrum.And the spacing between the spectrum is uneven .

Therefore the answer will be option C.

c)is unique to that element

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A wire 2.80 m in length carries a current of 5.60 A in a region where a uniform magnetic field has a magnitude of 0.300 T. Calcu
Alekssandra [29.7K]

Complete question:

A wire 2.80 m in length carries a current of 5.60 A in a region where a uniform magnetic field has a magnitude of 0.300 T. Calculate the magnitude of the magnetic force on the wire assuming the following angles between the magnetic field and the current.

a) 60 ⁰

b) 90 ⁰

c) 120 ⁰

Answer:

(a) When the angle, θ = 60 ⁰,  force = 4.07 N

(b) When the angle, θ = 90 ⁰,  force = 4.7 N

(c) When the angle, θ = 120 ⁰,  force = 4.07 N

Explanation:

Given;

length of the wire, L = 2.8 m

current carried by the wire, I = 5.6 A

magnitude of the magnetic force, F = 0.3 T

The magnitude of the magnetic force is calculated as follows;

F = BIl \ sin(\theta)

(a) When the angle, θ = 60 ⁰

F = BIl \ sin(\theta)\\\\F = 0.3 \times 5.6 \times 2.8 \times sin(60)\\\\F = 4.07 \ N

(b) When the angle, θ = 90 ⁰

F = BIl \ sin(\theta)\\\\F = 0.3 \times 5.6 \times 2.8 \times sin(90)\\\\F = 4.7 \ N

(c) When the angle, θ = 120 ⁰

F = BIl \ sin(\theta)\\\\F = 0.3 \times 5.6 \times 2.8 \times sin(120)\\\\F = 4.07 \ N

6 0
3 years ago
You are a pirate working for dread pirate roberts. you are in charge of a cannon that exerts a force 10000 n on a cannon ball wh
KATRIN_1 [288]
<span>Answer: Let m = mass of cannon Then 10000 = ma a = 10000/m v^2 = u^2 + 2as v^2 = 0 + 2as 84^2 = 2(2.21)(10000/m) 84^2 m = 4.42(10000) m = 6.264172336 = 6.26 kg Part 2 Range = u^2sin(2x38)/g = 84^2sin(76)/9.8 = 698.6129229 = 698.6 m</span>
7 0
3 years ago
The quantum mechanical approach to atomic structure permits the calculation of 1. the most probable distance between any two spe
miss Akunina [59]

Answer:

2. a region about the nucleus in which an electron of specified energy will probably be found

Explanation:

With quantum mechanics we can find the wave function that describes the movement of the particles, the interpretation of this wave function is through the probability density (φ* φ).

This probabilistic interpretation of the energies, position and amounts of motion electrons allow us to find the region around the nucleus where an electron of specific energy can be found with a given probability.

The correct answer is 2

3 0
3 years ago
What are three examples of objects that are too big to be studied without models
zysi [14]
1.The entire Universe
2. The milky way
3.Time and Space 
hoped this helped

4 0
3 years ago
On Planet X, a rock is thrown straight up. The position and velocity of the ball at various times are listed below. (Note: We ch
WINSTONCH [101]

Answer:

-5.0 m/s^2

Explanation:

The values of the position and velocity of the ball are missing in the text - found the table in internet, see attached picture.

We can solve this problem by using the following SUVAT equation:

v(t) = u +at

where

v(t) is the velocity of the rock at time t

u is the initial velocity

a is the acceleration of gravity on the planet

t is the time

At t = 0, u = 20 m/s.

After 1 second, t = 1 and v = 15 m/s. Substituting these values and solving for a, we find:

a=\frac{v-u}{t}=\frac{15-20}{1}=-5.0 m/s^2

And the negative sign means the acceleration is downward.

5 0
2 years ago
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