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SCORPION-xisa [38]
3 years ago
9

Heredity appears to have a large effect on the intelligence of adults than environment. True False

Physics
1 answer:
Annette [7]3 years ago
5 0
I JUST WANT THE ANSWER
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An electron is travelling in the positive x direction. A uniform electric field is in the negative y direction. If a uniform mag
tatuchka [14]

Answer:

into the page

Explanation:

Since the uniform electric field is in the negative y direction so its is -E and the electron is travelling in the positive x direction, it experiences an electric force F = -e × -E = + eE, so the electric force is in the positive y direction. Now since the net force on the electron is zero in the region of the magnetic field, it follows that the direction of the magnetic force is opposite to that of the electric force. Since the electric force is in the positive y direction, the magnetic force is in the negative y direction.

By the right hand rule, since the magnetic force is in the negative y direction and the electron moves in the positive x direction, it follows that the magnetic field is in the positive z direction, into the page.

3 0
3 years ago
Is it okay to let children use a phone at dinner? good or not good?
Alex73 [517]
I don’t know it kinda depends really
4 0
4 years ago
Read 2 more answers
A space station that does not rotate cannot simulate gravity for its occupants.
il63 [147K]

false

true

false

false

true

4 0
3 years ago
A block of mass m=9.0 kg and speed V and is behind a block of mass M= 27 kg and speed of .50 m/s. The surface is frictionless, a
sammy [17]

Answer:

2.06 m/s

Explanation:

From the law of conservation of linear momentum, the sum of momentum before and after collision are equal. Considering this case where we have frictionless surface, no momentum is lost in the process.

Momentum before collision

Momentum is given by p=mv where m and v represent mass. The initial sum of momentum will be 9v+(27*0.5)=9v+13.5

Momentum after collision

The momentum after collision will be given by (9+27)*0.9=32.4

Relating the two then 9v+13.5=32.4

9v=18.5

V=2.055555555555555555555555555555555555555 m/s

Rounded off, v is approximately 2.06 m/s

5 0
3 years ago
The diameter of an automobile tire is closest to
slamgirl [31]

Answer:

(1)  10^−2 m

Explanation:

The diameter of the tire of an automobile is generally expressed in centimetres; we can say that the diameter of a tire is generally about

d = 20 cm (20 centimetres)

Now we have to verify which option is closest to this value. To do that, we have to keep in mind the equivalence between metres and centimetres; in fact, we have:

1 cm = 10^{-2} m

This means that we can rewrite the diameter of the tire of a car as

d=20 cm = 20\cdot 10^{-2} m

By comparing it with the given options, we see that the closest option is

(1)  10^−2 m

which is therefore the correct answer.

6 0
4 years ago
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