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
Elis [28]
3 years ago
11

Spaceship flies past mars with a speed of 0.985c rela- tive to the surface of the planet. when the spaceship is directly overhea

d, a signal light on the martian surface blinks on and then off. an observer on mars measures that the signal light was on for 75.0 ms. (a) does the observer on mars or the pilot on the space- ship measure the proper time?
Physics
1 answer:
galben [10]3 years ago
8 0
The proper time would be the time measured in the rest frame of the event, so in this case the observer on mars would measure the proper time.
You might be interested in
What is the distance a bullet will travel when launched at 166 meters per second for 5.75seconds?
vodka [1.7K]
166x5.75= 954.5 meters in 5.75 seconds.
3 0
3 years ago
A professor sits at rest on a stool that can rotate without friction. The rotational inertia of the professor-stool system is 4.
Anestetic [448]

Answer:

\omega=0.37 [rad/s]  

Explanation:

We can use the conservation of the angular momentum.

L=mvR

I\omega=mvR

Now the Inertia is I(professor_stool) plus mR², that is the momentum inertia of a hoop about central axis.

So we will have:

(I_{proffesor - stool}+mR^{2})\omega=mvR

Now, we just need to solve it for ω.

\omega=\frac{mvR}{I_{proffesor-stool}+mR^{2}}

\omega=\frac{1.5*2.7*0.4}{4.1+1.5*0.4^{2}}      

\omega=0.37 [rad/s]  

I hope it helps you!

5 0
4 years ago
Science Mixtures Question( giving brainly, thanks, and rank of 5 stars.)
vazorg [7]

Answer:

Condensation

Explanation:

That is when water from the air collects as a drop. also can be rain.

4 0
3 years ago
Read 2 more answers
Beams used in Heavy Timber construction are sometimes firecut. This is done to: a) allow air circulation at the beam’s end in an
ladessa [460]

Answer:

option C

Explanation:

The correct answer is option C

Fire cut of fireman cut is diagonal cut which is provided at the end of the beam to prevent the fall of masonry wall if a fire breaks out in the building.

Fire cut allows joist to leave if it fails without affecting the masonry wall standing.

Without fire cut, the burnt beam will rotate downward affecting the connection of beam and wall and leading to damage it.

8 0
3 years ago
The winch takes in cable at the constant rate of 130 mm/s. if the cylinder mass is 115 kg, determine the tension in cable 1. neg
nikitadnepr [17]
By applying Newton's second law of motion;

ma = mg - T

Where,
m = mass; a = downward accelerations (+ve value) or upward acceleration (-ve value); g = gravitational acceleration; T = tension.

For the current case, the velocity is constant therefore,
a = 0

Then,
0 = mg - T
T = mg = 115*9.81 = 1128.15 N

Tension in the cable is 1128.15 N.
8 0
3 years ago
Other questions:
  • A major artery with a cross sectional area of 1.00cm^2 branches into 18 smaller arteries, each with an average cross sectional a
    10·1 answer
  • Rank them from fastest to slowest in how quickly each warms up: (a) steel, 450 j/kgââc ; (b) aluminum, 910 j/kgââc ; (c) copper,
    11·1 answer
  • As you brake your bicycle, your velocity changes from 20 east m/s to 10 east m/s in 5 seconds.
    11·1 answer
  • Cart A and cart B are moving toward each other. They collide and come to rest at the point of impact. From this observation, we
    8·2 answers
  • Which of the following is true
    14·2 answers
  • Two waves are in phase if they are of the same ___________.
    8·2 answers
  • In equilibrium, ________. Group of answer choices the ratio of marginal benefits to income should be identical across all goods
    10·1 answer
  • Someone pushes on a rock and measures the net force acting on it is 147 N and acceleration to be 7.5m/s2.What is the weight of t
    15·1 answer
  • Which statement describes how work and power are similar?
    7·1 answer
  • A 1-kilogram stone is being dropped from a bridge 100 meters above a gorge.
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!