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NISA [10]
3 years ago
10

A particle zips by us with a Lorentz factor (γ) of 1.12. Then another particle zips by us moving at twice the speed of the first

particle.
a) What is the Lorentz factor (γ) of the second particle?

b) If the particles were moving with a speed much less than c, the magnitude of the
momentum of the second particle would be twice that of the first. However, what is the ratio of the magnitudes of momentum for these relativistic particles?
Physics
2 answers:
Firdavs [7]3 years ago
6 0
B yes this is right when I’m test on that
mixer [17]3 years ago
3 0

Answer:

Explanation:

Part A

Lorentz factor = 1/(sqrt(1 - (v/c)^2 ))

1.12 = 1/(sqrt(1 - v^2/c^2))                         square both sides.

1.2544 = 1 / (1 - v^2/c^2)                          Multiply both sides by 1 - v^2/c^2

1.2544 * (1 - v^2/c^2) = 1                         Remove the brackets

1.2544  - 1.2544 v^2 /c^2 = 1                 Multiply c^2 through the entire equation

1.2544*c^2 - 1.2544v^2 = c^2                Subtract 1.2544 c^2 from both sides

-1.2544v^2 = - 0.2544 c^2                     Divide by - 1.2544

v^2 = 0.2544 c^2 /1.2544

v^2 = 0.2028 c

v =  0.4534 * c

v = 1.360 * 10^8

2*v = 2.272 * 10*8

Lorentz Factor = LF = 1/square root( (1 - 2.272* 10^8/3*10^3))

LF = 2.345

Part B

Momentum is mv

I still get two even though the Lorentz factors are different.

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Two workers are sliding 290 kg crate across the floor. One worker pushes forward on the crate with a force of 430 N while the ot
m_a_m_a [10]

Answer:0.27

Explanation:

Given

One worker Pushes with force F_1=430 N

other Pulls it with a rope of rope F_2=360 N

mass of crate m=290 kg

both forces are horizontal and crate slides with a constant speed

Both forces are in the same direction so Friction will oppose the forces and will be equal in magnitude of sum of two forces because crate is moving with constant speed i.e. net force is zero on it

f_r=F_1+F_2

where f_r is the friction force

f_r=430+360

f_r=790 N

f_r=\mu N

where \muis the coefficient of static friction

N=mg

790=\mu 29\cdot 9.8

\mu =0.27

6 0
3 years ago
The current in a resistor is 3.0 A, and its power is 60 W. What is the voltage?
Novosadov [1.4K]

Answer:

20 volts

Explanation:

Use the equation P=VI

60=V(3)

V=20

6 0
2 years ago
Read 2 more answers
A transverse wave on a string is described by the wave functiony(x, t) = 0.350 sin (1.25x + 99.6t)where x and y are in meters an
ella [17]

The time interval that is between the first two instants when the element has a position of 0.175 is 0.0683.

<h3>How to solve for the time interval</h3>

We have y = 0.175

y(x, t) = 0.350 sin (1.25x + 99.6t) = 0.175

sin (1.25x + 99.6t) = 0.175

sin (1.25x + 99.6t) = 0.5

99.62 = pi/6

t1 = 5.257 x 10⁻³

99.6t = pi/6 + 2pi

= 0.0683

The time interval that is between the first two instants when the element has a position of 0.175 is 0.0683.

b. we have k = 1.25, w = 99.6t

v = w/k

99.6/1.25 = 79.68

s = vt

= 79.68 * 0.0683

= 5.02

Read more on waves here

brainly.com/question/25699025

#SPJ4

complete question

A transverse wave on a string is described by the wave function y(x, t) = 0.350 sin (1.25x + 99.6t) where x and y are in meters and t is in seconds. Consider the element of the string at x=0. (a) What is the time interval between the first two instants when this element has a position of y= 0.175 m? (b) What distance does the wave travel during the time interval found in part (a)?

7 0
2 years ago
A 20-lb force acts to the west while an 80-lb force acts 45° east of north. The magnitu 80 lb 70 lb 067 lb 100 lb
natulia [17]

Answer:

option C

Explanation:

given,

force act on west  = 20 lb

force act at 45° east of north = 80 lb

magnitude of force = ?

∑ F y  =  80 cos 45⁰

    F y =  56.57 lb

magnitude of forces in x- direction

∑ F x = -20 + 80 sin 45⁰

        = 36.57 lb

net force

F = \sqrt{F_x^2+F_y^2}

F = \sqrt{56.57^2+36.57^2}

F = 67.36 lb≅ 67 lb

hence, the correct answer is option C

4 0
3 years ago
4. show your understanding of electric and magnetic forces<br> below.
Vitek1552 [10]

Answer:

Explanation:

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8 0
3 years ago
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