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3 years ago

P-waves and S-waves are also known as

Physics

2 answers:

scoundrel [369]3 years ago

7 0

Transverse waves , seismic waves

belka [17]3 years ago

5 0

Answer:

d. seismic waves and c. transverse waves.

Explanation:

Hi, S waves are also known as transverse waves. The S stands for secondary wave because is the second arrival on an earthquake seismogram.

P waves are also known as seismic waves in seismology. The P Stands for primary wave because is the wave that has the highest velocity.

Feel free to ask for more if needed or if you did not understand something.

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A proton (mass m 1.67 x 1027 kg) is being accelerated along a straight line at 1.4 x 1015 m/s2 in a machine. The proton has an i

BaLLatris [955]

Answer:

Part a)

$v_f = 2.569 \times 10^7 m/s$

Part b)

$\Delta K = 7.014 \times 10^{-14} J$

Explanation:

Part a)

As we know that proton is accelerated uniformly so we can use kinematics here to find the final speed

so we know that

$v_i = 2.4 \times 10^7 m/s$

$d = 3 cm$

$a = 1.4 \times 10^{15} m/s^2$

so we will have

$v_f^2 - v_i^2 = 2 a d$

$v_f^2 - (2.4 \times 10^7)^2 = 2(1.4 \times 10^{15})(0.03)$

$v_f^2 = 6.6 \times 10^{14}$

$v_f = 2.569 \times 10^7 m/s$

Part b)

Now increase in kinetic energy is given as

$\Delta K = \frac{1}{2}m(v_f^2 - v_i^2)$

$\Delta K = \frac{1}{2}(1.67 \times 10^{-27})[(2.569 \times 10^7)^2 - (2.4 \times 10^7)^2]$

$\Delta K = 7.014 \times 10^{-14} J$

7 0

3 years ago

The activation energy of a reaction going on its own is 20 kj. If the reaction was treated with a catalyst, which would most lik

storchak [24]

Answer:

15 kJ

Explanation:

We need to know the following;

what is activation energy?

Activation energy is the minimum energy required by reactants for a chemical reaction to take place.

What are catalysts?

Catalysts are molecules or substances that speed up the rate of a chemical reaction.

In other words, catalysts increase the speed at which products are formed from reactants.

How do catalysts speed up reactions?

Catalysts speed the rate of chemical reactions by lowering the activation energy of the reactants.
When activation energy is lowered, reactants require less energy for the reaction to occur which easily achieved making the reaction proceed faster.
Therefore, in presence of a catalyst, the new activation energy should be lower than the initial value of activation energy.

7 0

3 years ago

Read 2 more answers

Write a sentence or short paragraph that defines and explains an adaptation

alexdok [17]

Adaptation is when a living thing changes its behavior to survive in its surroundings.

3 0

3 years ago

Two atoms with different mass number but the same atomic number are called A) elements. B) ions. C) isotopes. D) nuclei.

saw5 [17]

C isotopes is the correct answer. Isotopes are variants of a particular chemical element which differ in neutron number, and consequently in nucleon number.All isotopes of a given element have the same number of protons but different numbers of neutrons in each atom.

Hope this helps! :)

4 0

3 years ago

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A hungry rat is placed in a maze. It walks the following path to find a piece of cheese. 4.0m N, 7.5 m E, 6.8 m S, 3.7 m E, 3.6

storchak [24]

Answer:

Explanation:

We shall take the help of vector form of displacement . Taking east as i and north as j

4.0m N = 4 j

7.5 m E = 7.5 i

6.8 m S = - 6.8 j

3.7 m E, = 3.7 i

3.6 m S = - 3.6 j

5.3 m W = - 5.3 i

3.7 m N, = 3.7 j

5.6 m W = - 5.6 i

4.4 m S = - 4.4 j

4.9 m W = - 4.9 i

Total displacement = 4j +7.5 i -6.8j+3.7i-3.6j-5.3i+3.7j-5.6i-4.4j-4.9i

= -4.6 i -7.1 j

magnitude of displacement = $\sqrt{(4.6^2+7.1^2)}$

= 8.46 m

Direction

Tanθ = 7.1/ 4.6

θ = 57⁰ south of west .

distance walked = 4+7.5 +6.8+3.7+3.6+5.3+3.7+5.6+4.4+4.9

= 49.5 m

6 0

3 years ago

Read 2 more answers