1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
PtichkaEL [24]
3 years ago
12

What is the wavelength of 7.0-TeV protons? A) 550 nm B) 750 nm C) 5.4x10^-15 m D) 3.2x10^-18 m E) 1.8x10^-19 m

Physics
1 answer:
AnnZ [28]3 years ago
6 0

Answer:

1.776 x 10^-19 m

Explanation:

Energy, E = 7 TeV

Let λ be the wavelength.

Energy = h c / λ

Where, h is the Planks,s constant and c be the velocity of light

h = 6.63 x 10-^-34 Js

c = 3 x 10^8 m/s

Convert TeV into J

1 TeV = 1.6 x 10^-7 J

So, E = 7 x 1.6 x 10^-7 = 11.2 x 10^-7 J

11.2 x 10^-7 = (6.63 x 10^-34 x 3 x 10^8) / λ

λ = 1.776 x 10^-19 m

You might be interested in
Consider the following mass distribution where the x- and y-coordinates are given in meters: 5.0 kg at (0.0, 0.0) m, 2.9 kg at (
Sauron [17]

Answer:

x = -1.20 m

y = -1.12 m

Explanation:

as we know that four masses and their position is given as

5.0 kg (0, 0)

2.9 kg (0, 3.2)

4 kg (2.5, 0)

8.3 kg (x, y)

As we know that the formula of center of gravity is given as

x_{cm} = \frac{m_1 x_1 + m_2x_2 + m_3x_3 + m_4x_4}{m_1 + m_2 + m_3 + m_4}

0 = \frac{5(0) + 2.9(0) + 4(2.5) + 8.3 x}{5 + 2.9 + 4 + 8.3}

10 + 8.3 x = 0

x = -1.20 m

Similarly for y direction we have

y_{cm} = \frac{m_1 y_1 + m_2y_2 + m_3y_3 + m_4y_4}{m_1 + m_2 + m_3 + m_4}

0 = \frac{5(0) + 2.9(3.2) + 4(0) + 8.3 y}{5 + 2.9 + 4 + 8.3}

9.28 + 8.3 x = 0

x = -1.12 m

5 0
3 years ago
Calculate how much work you need to move the 130N trunk to a ledge 2 n above
arsen [322]
260 joules is hopefully right.
3 0
3 years ago
Read 2 more answers
How does temperature change as you go from the surface toward the center of the earth?
Nastasia [14]
Because lava is in the center and lavas hot
8 0
3 years ago
A model rocket blasts off and moves upward with an acceleration of 12 m/s2 until it reaches a height of 26 m. at that height, it
Diano4ka-milaya [45]

initial acceleration of rocket is given as

a = 12 m/s^2

h = 26 m

now we can use kinematics to find its speed

v_f^2 - v_i^2 = 2 a h

v_f^2 - 0 = 2 * 12*26

v_f = 24.98 m/s

now after this it will be under free fall

so now again using kinematics

v_f = 0

at maximum height

v_f^2 - v_i^2 = 2 a s

0 - 24.98^2 = 2 * (-9.8)* h

h = 31.8 m

total height from the ground = 31.8 + 26 = 57.8 m

Part b)

now after reaching highest height it will fall to ground

So in order to find the speed we can use kinematics again

v_f^2 - v_i^2 = 2 a d

v_f^2 - 0 = 2*9.8*57.8

v_f = 33.67 m/s

Part c)

first rocket accelerate to reach height 26 meter and speed becomes 24.98 m/s

now we have

v_f - v_i = a t

24.98 - 0 = 12*t_1

t_1 = 2.1 s

after this it will reach to highest point and final speed becomes zero

v_f - v_i = at

0 - 24.98 = -9.8 * t

t_2 = 2.55 s

now from this it will fall back to ground and reach to final speed 33.67 m/s

now we have

v_f - v_i = at

33.67 - 0 = 9.8 * t

t_3 = 3.44 s

so total time is given as

<em>t = 3.44 + 2.55 + 2.1 = 8.1 s</em>

5 0
3 years ago
Which of the following accurately describe some aspect of gravitational waves? Select all that apply.
steposvetlana [31]
<h2>Answers:</h2>

-The first direct detection of gravitational waves came in 2015

-The existence of gravitational waves is predicted by Einstein's general theory of relativity

-Gravitational waves carry energy away from their sources of emission

<h2>Explanation:</h2>

Gravitational waves were discovered (theoretically) by Albert Einstein in 1916 and "observed" for the first time in direct form in 2015 (although the results were published in 2016).  

These gravitational waves are fluctuations or disturbances of space-time produced by a massive accelerated body, modifying the distances and the dimensions of objects in an imperceptible way.  

In this context, an excellent example is the system of two neutron stars that orbit high speeds, producing a deformation that propagates like a wave,<u> in the same way as when a stone is thrown into the water</u>. So, in this sense, gravitational waves carry energy away from their sources .

Therefore, the correct options are D, E and F.

5 0
4 years ago
Other questions:
  • The van der Waals equation for n moles of a gas is where P is the pressure, V is the volume, and T is the temperature of the gas
    11·1 answer
  • The sphere shown below is placed in a full overflow cup and sinks to the bottom. How much water is displaced by the sphere? the
    14·1 answer
  • Hey there!
    14·2 answers
  • What is the period of a wave with a frequency of 100 Hz and a wavelength of 2.0 m
    13·2 answers
  • A packing crate is sitting at rest on an inclined loading ramp. How does the magnitude of the force of static friction compare t
    10·1 answer
  • Which device can be used to increase voltage from a source of direct current?
    10·1 answer
  • Why material selection is important to design and manufacturing?​
    13·2 answers
  • if a copper coin with a volume of exactly 50 cubic cm is dropped into the volume of water ,how much water will be overflown(give
    9·1 answer
  • Calculate amount of current flowing in wire if number of charge is 8 and e = 1.69 x10^-19 , t= 8millsec
    10·1 answer
  • Two formats of sources are
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!