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Levart [38]
3 years ago
14

If you have ever used a compass, you know that it can be used to help navigate. It does this with a needle that always points no

rth, so you know which direction you are heading. Why does a compass needle point north?
A)Due to the direction of the earth's orbit.
B)Due to the influence of the earth's rotation.
C)Due to the influence of the earth's magnetic field.
D)Due to the influence of the earth's electric field.
Physics
2 answers:
LUCKY_DIMON [66]3 years ago
8 0
I'm not 100% sure, but i think it's C.?
SSSSS [86.1K]3 years ago
8 0

The answer is 100% C.

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How does an atom of potassium-41 become a potassium ion with a +1 charge? 19 K 39.10
stiv31 [10]

It is very difficult for an atom to accept a proton. It can only be done under very special circumstances. So A and C are both incorrect. I don't see how D is possible. The atom does lose 1 electron, but how it gets 21 is think air.

The answer is B which is exactly what happens.

5 0
3 years ago
Read 2 more answers
How is displacement different from distance?
Anni [7]

Answer:

i do belive its C

Explanation:

i remeber this question from somewhere also it makes the most sense

5 0
3 years ago
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A ball is thrown vertically upwards with an initial velocity of 20.00 m/s. Neglecting air resistance, how long is the ball in th
algol [13]

Answer:

1) The greatest height attained by the ball equals 20.387 meters.

2) The time it takes for the ball to reach 15 meters approximately equals 1 second.

Explanation:

The greatest height will be attained when the ball stop's in the air and starts falling back to the earth.

thus using third equation of kinematics we obtain the height attained as

v^2=u^2+2as

where

'v' is the final speed of the ball

'u' is the initial speed of the ball

'a' is the acceleration that the ball is under which in this case equals 9.81 m/s^{2}

's' is the distance it covers

Thus for maximum height applying the values in the equation we get

0=20^{2}-2\times 9.81\times h\\\\\therefore h=\frac{20^{2}}{2\times 9.81}=20.387meters

Using the same equation we can find the speed of the ball when it reaches 15 meters of height as  

v^2=20^{2}-2\times 9.81\times 15\\\\v^{2}=105.7\\\\\therefore v=10.28m/s

the time it takes to reduce the velocity to this value can be found by first equation of kinematics as

v=u+at\\\\t=\frac{v-u}{a}\\\\t=\frac{10.28-20}{-9.81}=0.991seconds\approx 1second

4 0
3 years ago
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ivanzaharov [21]
The reckless risk taking found among many adolescents is most likely due to the effects of        <span>Peer pressure</span>
8 0
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Steel Usually forms a
meriva

Answer:

Permanent magnetism (of the steel)

make me brainliestt :))

6 0
3 years ago
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