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2 years ago

What is magnetic declination?

Physics

2 answers:

Snowcat [4.5K]2 years ago

8 0

<h3>The answer is B. I know because I took the test and got a 100%</h3>

sdas [7]2 years ago

5 0

I believe its B , (the direction the north end of a compass needle points, corresponding to the direction of the Earth's magnetic field lines)

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QUESTION 23

Nutka1998 [239]

Answer:

E = 3600 J

Explanation:

Given that,

Voltage, V = 115 V

Power of electric bulb, P = 60 W

We need to find the electric energy used in 1 minute. The electric energy use is given by :

$E=P\times t\\\\E=60\ W\times 60\ s\\\\E = 3600\ J$

Hence, the electrical energy is 3600 J.

8 0

2 years ago

In this ecosystem, squirrels find and eat acorns from trees. What would happen to the balance of the ecosystem if populations of

Marizza181 [45]

Answer

The answer would be B.

7 0

3 years ago

Angela has been exercising regularly for two years. Right now at her house everyone is feeling sick, but she is able to help the

Dmitry [639]

Answer:

it make your immune system build up from the strain your puting on you body

Explanation:

excercise is good for you and builds muscle and blood cells

3 0

2 years ago

Which of the following substance is not formed by chemical bonds? A.) Mixture

Rudiy27

The answer to your question would be C

8 0

2 years ago

An electron of mass 9.11×10−31 kgkg leaves one end of a TV picture tube with zero initial speed and travels in a straight line t

ki77a [65]

Explanation:

We will use the equations of constant acceleration to find out $a_{x}$ and time t.

As we know that the initial speed is zero. So

(a)

$v_{0x} = 0$

$x - x_{o} = 1.25$ × $10^{-2}$ m

$v_{x} = 3.3$ × $10^{6}$ m/s

$v^{2} _{x} = v^{2} _{x_{o} } + 2a_{x} (x - x_{o} )$

$a_{x} = \frac{v^{2} _{x} - v^{2} _{ox} }{2(x - x_{o}) }$

= $\frac{(3.3 * 10^{6})^{2} - 0 }{2(1.25 * 10^{-2}) }$

= 4.356× $10^{14}$ m/s²

(b)

$v_{x} = v_{ox} + a_{x}t$

$t = v_{x} - vo_{x}/a_{x}$

$t = \frac{3.00 * 10^{6} }{4.356*10^{14} }$ = 6.8870× $10^{-9}$ s

(c)

Σ $F_{x} = ma_{x}$

= (9.11× $10^{-31}$ )(4.356× $10^{14}$ m/s²)

= 3.968× $10^{-16}$ N

6 0

2 years ago