Question

12. Two spaceships leave Earth in opposite directions, each with a speed of 0.70 c with respect to Earth.

Part A What are the velocities of spaceship 1 relative to spaceship 2 and spaceship 2 relative to spaceship 1? Take the positive direction to be the direction of motion of spaceship 1. Express your answers using two significant figures.

Enter your answers numerically separated by a comma. v12, v21 = ??? ⋅c

Answer #1

Spaceships A and B are both moving at the speed 0.9c relative to
Earth, but in opposite directions. a) Find the speed of spaceship A
relative to spaceship B. b) find the gamma factor γ for the motion
of A relative to B. c) Johnny, in spaceship A, measures the speed
of a light pulse along the direction of the motion to be c. Use the
same formula you used for part a) (ux’ as a function of ux) to...

13. A spaceship leaves Earth traveling at 0.75 c. A second
spaceship leaves the first at a speed of 0.89 c with respect to the
first.
Part A Calculate the speed of the second ship with respect to
Earth if it is fired in the same direction the first spaceship is
already moving. Take the positive direction in the direction of the
first spaceship. Express your answer using two significant
figures.
Part B Calculate the speed of the second ship...

A 780-kg two-stage rocket is traveling at a speed of 6.90×103
m/s away from Earth when a predesigned explosion separates the
rocket into two sections of equal mass that then move with a speed
of 2.50×103 m/s relative to each other along the original line of
motion. a.)What is the speed of each section (relative to Earth)
after the explosion? Express your answers using three significant
figures separated by a comma. b.)What are the direction of each
section (relative to...

A 2.85 μF capacitor is charged to 490 V and a 3.80
μF capacitor is charged to 525 V .
A) These capacitors are then
disconnected from their batteries, and the positive plates are now
connected to each other and the negative plates are connected to
each other. What will be the potential difference across each
capacitor? (Enter your answers numerically separated by a
comma.)
B) What will be the charge on each
capacitor? (Enter your answers numerically separated by...

Calculate [H3O+][H3O+] and [OH−][OH−] for each of the following
solutions at 25 ∘C∘C given the pHpH\rm pH.
You may want to reference (Pages 696 - 700) Section 16.6 while
completing this problem.
Part A
pH=pH= 8.53
Express your answer using two significant figures. Enter your
answers numerically separated by a comma.
[H3O+], [OH−] =
M
Part B
pH=pH= 11.32
Express your answer using two significant figures. Enter your
answers numerically separated by a comma.
[H3O+], [OH−] =
M
Part C...

In principle, any time someone jumps up, the earth moves in the
opposite direction.
To see why we are unaware of this motion, calculate the recoil
speed of the earth when a 77.0 kgperson jumps upward at a speed of
2.10 m/s . Consult Appendix E in the textbook as needed.
Express your answer using two significant
figures.

Consider the following reaction: A(g)⇌2B(g) Find the equilibrium
partial pressures of A and B for each of the following different
values of Kp. Assume that the initial partial pressure of B in each
case is 1.0 atm and that the initial partial pressure of A is 0.0
atm. Make any appropriate simplifying assumptions.
Part A
Kp= 1.6
Enter your answers numerically separated by a comma. Express
your answer using two significant figures.
Part B
Kp= 2.0×10−4
Enter your answers numerically...

For each strong acid solutions, determine [H3O+],[OH−],
and pH.
Please Answer all parts separately Will be very helpful
!!!
Part A
0.20 M HCl
Enter your answers numerically separated by a comma. Express
your answer using two significant figures.
[H3O+], [OH−] = ________________ M
Part B
Express your answer to two decimal places.
pH= _______________
Part C
1.6×10−2 M HNO3
Enter your answers numerically separated by a comma. Express
your answer using two significant figures.
[H3O+], [OH−] = ______________ M...

The displacement of a standing wave on a string is given by
D=3.4sin(0.67x)cos(40t), where
xand D are in centimeters and t is in
seconds.
Part A
What is the distance (cm) between nodes?
Express your answer using two significant figures.
Part B
Give the amplitude of each of the component waves.
Express your answers using two significant figures. Enter your
answers numerically separated by a comma.
Part C
Give the frequency of each of the component waves.
Express your answers...

Calculate [H3O+] and [OH−] for the solution.
pH= 11.23
Express your answer using two significant figures. Enter your
answers numerically separated by a comma.

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