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Novay_Z [31]
2 years ago
10

HELP ME PLEASE AND HURRY !!!!!!

Physics
2 answers:
hodyreva [135]2 years ago
8 0

Answer:

mass number = protons + neutrons

AnnZ [28]2 years ago
3 0
The numbers of protons and neutrons determine an elements mass number. Subtract the number of protons from the neutrons or atomic number from the mass number
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A charge q = 3 × 10-6 C of mass m = 2 × 10-6 kg, and speed v = 5 × 106 m/s enters a uniform magnetic field. The mass experiences
NeX [460]

Answer:

Magnetic field, B = 0.004 mT

Explanation:

It is given that,

Charge, q=3\times 10^{-6}\ C

Mass of charge particle, m=2\times 10^{-6}\ C

Speed, v=5\times 10^{6}\ m/s

Acceleration, a=3\times 10^{4}\ m/s^2

We need to find the minimum magnetic field that would produce such an acceleration. So,

ma=qvB\ sin\theta

For minimum magnetic field,

ma=qvB

B=\dfrac{ma}{qv}

B=\dfrac{2\times 10^{-6}\ C\times 3\times 10^{4}\ m/s^2}{3\times 10^{-6}\ C\times 5\times 10^{6}\ m/s}

B = 0.004 T

or

B = 4 mT

So, the magnetic field produce such an acceleration at 4 mT. Hence, this is the required solution.

4 0
3 years ago
An airplane moving horizontally at 150 m/s drops a package from an altitude is 490 m. How long does it
Debora [2.8K]

Answer:

640

Explanation:

cause you should just add the 2

5 0
3 years ago
The _______ is responsible for absorbing the most UV radiation.
Lorico [155]

_____Mesosphere_____

5 0
3 years ago
Read 2 more answers
Calculate the voltage (in volts) of a solar cell that generates a current of 139 milliamps and has a resistance of 6 ohms.
valkas [14]

Answer:

834 milli-volts

Explanation:

Data provided in the question:

Current = 139 milliamps = 139 × 10⁻³ A

resistance = 6 ohms

Now,

The relation between the current , resistance and voltage is given as:

Voltage = Current × Resistance

on substituting the respective values, we get

Voltage = 139 × 10⁻³ × 6

or

Voltage = 834 milli-volts

8 0
4 years ago
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Question 6
Kisachek [45]
6. gas

7. liquid

8. gas

9. does not change

10. boiling point
7 0
3 years ago
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