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Author Question: Some of Earth's artificial satellites orbit in the a. stratosphere. b. troposphere. c. ... (Read 45 times)

panfilo

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Some of Earth's artificial satellites orbit in the
 a. stratosphere.
  b. troposphere.
  c. mesosphere.
  d. thermosphere.
  e. exosphere.

Question 2

How many protons does Tc have?
 a. 93
  b. 58
  c. 48
  d. 107
  e. 43

Question 3

Two wires, each having a weight per unit length of 1.0  104 N/m, are strung parallel, one 0.10 m above the other. If the wires carry the same current, though in opposite directions, how great must the current in each wire be for the magnetic field of the lower conductor to balance the weight of the upper conductor?

Question 4

At 1800 degrees Fahrenheit, this part of atmosphere is heated almost directly by the Sun's rays.
 a. Stratosphere
  b. Troposphere
  c. Mesosphere
  d. Thermosphere

Question 5

What is the symbol for the element whose atoms have 3 protons each?
 a. Mn
  b. Li
  c. Sr
  d. Li
  e. Cm

Question 6

A long solenoid (n = 80 turns/cm) carries a current of 70 mA. Determine the magnitude of the magnetic field inside the solenoid.

Question 7

The coldest region of the atmosphere is the
 a. stratosphere.
  b. troposphere.
  c. mesosphere.
  d. thermosphere.

Question 8

What is the symbol for the element whose atoms have 92 protons each?
 a. Nb
  b. U
  c. Zn
  d. None of these

Question 9

When a ferromagnetic material that has been magnetized is brought to a temperature greater than the Curie temperature, what happens to its residual magnetism.
 a. Nothing happens to the residual magnetism.
  b. The residual magnetism disappears.
  c. The residual magnetism reaches it's highest value.
  d. All the magnetic domains causing magnetism become a single domain.
  e. The material of the magnet melts causing currents that are magnetic.

Question 10

Jet planes avoid bad weather by flying above it in the
 a. stratosphere.
  b. troposphere.
  c. mesosphere.
  d. thermosphere.

Question 11

What is the symbol for the element whose atoms have 40 electrons each?
 a. Ge
  b. Zr
  c. Ar
  d. None of these

Question 12

Which of the following type(s) of materials is(are) repelled when a magnet is brought near by?
 a. paramagnetic
  b. diamagnetic
  c. ferromagnetic
  d. paramagnetic and ferromagnetic
  e. paramagnetic, ferromagnetic, and diamagnetic

Question 13

Weather occurs in the
 a. stratosphere.
  b. troposphere.
  c. mesosphere.
  d. thermosphere.

Question 14

If the energy of n = 6 is 0.378 eV and that of n = 4 is 0.850 eV in a hydrogen atom, a transition from n = 6 to n = 4 will emit a photon of what energy?



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kbennett34

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Answer to Question 1

e

Answer to Question 2

e

Answer to Question 3

7.1 A

Answer to Question 4

d

Answer to Question 5

b

Answer to Question 6

7.0 gauss

Answer to Question 7

c

Answer to Question 8

b

Answer to Question 9

b

Answer to Question 10

a

Answer to Question 11

b

Answer to Question 12

b

Answer to Question 13

b

Answer to Question 14

0.472 eV (the positive value indicating emission)




panfilo

  • Member
  • Posts: 572
Reply 2 on: Jul 29, 2018
YES! Correct, THANKS for helping me on my review


ttt030911

  • Member
  • Posts: 315
Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

 

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