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madreJ [45]
4 years ago
6

The relationship between the mass m of a material, its volume V, and its density D is

Physics
2 answers:
Alex787 [66]4 years ago
7 0
The correct answer is c) DV = m 
san4es73 [151]4 years ago
6 0
The answer is C........
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Two argon atoms form the molecule Ar2 as a result of a van der Waals interaction with U0 = 1.68×10-21 J and R0= 3.82×10 the freq
mel-nik [20]

Answer:

\mathbf{f_o =1.87 \times 10^{11} \ Hz}

Explanation:

From the given information:

The elastic potential energy can be calculated by using the formula:

U_o = \dfrac{1}{2}kR_o^2

Making K the subject;

K = \dfrac{2 U_o}{R_o^2}

k = \dfrac{2\times 1.68 \times 10^{-21}}{(3.82\times 10^{-10})^2}

k = 2.3 × 10⁻² N/m

Now; the frequency of the small oscillation can be determined by using the formula:

f_o = \dfrac{1}{2 \pi}\sqrt{\dfrac{k}{m}}

where;

m = mass of each atom = 1.66 × 10⁻²⁶ kg

f_o = \dfrac{1}{2 \pi}\sqrt{\dfrac{2.3 \times 10^{-2} N/m}{1.66 \times 10^{-26} \ kg}}

\mathbf{f_o =1.87 \times 10^{11} \ Hz}

6 0
3 years ago
How do we live on earth if the earth is in the sky?
PtichkaEL [24]

Answer:

We live on earth because we are not floating in the sky.

Explanation:

Because earth may be in the sky but we are not technically we are in the sky on earth not in the sky that's incorrect.

4 0
2 years ago
-<br> ZOOLS<br> 6) The mass of a motorcycle is 250 kg. What is?<br> A) Its weight on Earth in Newtons?<br> B) Its weight on the
marishachu [46]

Answer:

Explanation:

Weight is actually a force. A force can change depending on its location. A mass remains constant no matter where it is.

A)

F = m * a

m = 250 kg

a = 9.81 m/s^2

F = 250 * 9.81 = 2452.5 N

B)

The acceleration due to gravity on the moon is roughly 1/6 what it is on earth. You can check its value in your notes.

a = 9.81 + (1/6) = 1.635

m = 250

F = 250 * 1.635

F = 408.75

C)

The mass is the same anywhere in the universe.

250 kg

4 0
3 years ago
How does a laser work?
a_sh-v [17]

Answer:

A laser is created when the electrons in atoms in special glasses, crystals, or gases absorb energy from an electrical current or another laser and become “excited.” The excited electrons move from a lower-energy orbit to a higher-energy orbit around the atom's nucleus.

7 0
4 years ago
The speed of a rocket just after being launched is 12 m / s.
drek231 [11]

This question involves the concepts of the equations of motion, kinetic energy, and potential energy.

a. The kinetic energy of the rocket at launch is "3.6 J".

b. maximum gravitational potential energy of the rocket is "3.6 J".

<h3>a. KINETIC ENERGY AT LAUNCH</h3>

The kinetic energy of the rocket at launch is given by the following formula:

K.E=\frac{1}{2} m v_i^2

where,

  • K.E = initial kinetic energy = ?
  • m = mass of rocket = 0.05 kg
  • v_i = initial speed = 12 m/s

Therefore,

K.E=\frac{1}{2}(0.05\ kg)(12\ m/s)^2

K.E = 3.6 J

<h3>b. MAXIMUM GRAVITATIONAL POTENTIAL ENERGY</h3>

First, we will use the third equation of motion to find the maximum height reached by rocket:

2gh=v_f^2-v_i^2

where,

  • g = -9.81 m/s²
  • h = maximum height = ?
  • vf = final speed  = 0 m/s

Therefore,

2(-9.81 m/s²)h = (0 m/s)² - (12 m/s)²

h = 7.34 m

Hence, the maximum gravitational potential energy will be:

P.E = mgh

P.E = (0.05 kg)(9.81 m/s²)(7.34 m)

P.E = 3.6 J

Learn more about the equations of motion here:

brainly.com/question/5955789

4 0
2 years ago
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