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adelina 88 [10]
3 years ago
13

A vertical wire carries a current straight down. To the east of this wire, the magnetic field points: A) toward the east. B) tow

ard the west. C) toward the north. D) downward. E) toward the south.
Physics
2 answers:
geniusboy [140]3 years ago
6 0

Answer:

option E

Explanation:

the correct answer is option E

the direction of magnetic field will be found out with the help of right hand rule.

Put you palm in the direction of electric field and curl your finger in the direction of magnetic field which east direction.

 now, the direction shown by the thumb will be the direction of magnetic field  which comes out to be toward South direction.

Marizza181 [45]3 years ago
4 0

Answer:

answer is E) towards the south

Explanation:

the direction of magnetic field is found by right hand rule, if you curl your fingers to the east the thumb with point towards south.

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A ball is thrown vertically upward with a speed of 19.0 m/s. (a) How high does it rise? m (b) How long does it take to reach its
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Answer with Explanation:

We are given that

Initial speed=u=19 m/s

a.g=9.8m/s^2

Final velocity of ball=v=0

v=u-gt

g is negative because the ball is going against to gravity.

0=19-9.8t

9.8t=19

t=\frac{19}{9.8}=1.94 s

s=ut-\frac{1}{2}gt^2

Using the formula

s=19(1.94)-\frac{1}{2}(9.8)(1.94)^2

s=18.4 m

a.The ball rise upto height 18.4 m

b.It take 1.94 s to reach its highest point.

c.Initial velocity=0,s=18.4 m

s=ut+\frac{1}{2}gt^2

18.4=0(t)+\frac{1}{2}(9.8)t^2

18.4=4.9t^2

t^2=\frac{18.4}{4.9}

t=\sqrt{\frac{18.4}{4.9}}

t=1.94 s

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3 years ago
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Answer : The final temperature is, 25.0^oC

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c_2 = specific heat of water = 4.18J/g^oC

m_1 = mass of ice = 50 g

m_2 = mass of water = 200 g

T_f = final temperature = ?

T_1 = initial temperature of ice = -15^oC

T_2 = initial temperature of water = 30^oC

Now put all the given values in the above formula, we get:

50g\times 2.09J/g^oC\times (T_f-(-15))^oC=-200g\times 4.184J/g^oC\times (T_f-30)^oC

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Therefore, the final temperature is, 25.0^oC

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