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
ddd [48]
3 years ago
7

Q.A person sitting in a moving train throws a ball

Physics
1 answer:
exis [7]3 years ago
6 0

Answer:

The person inside the train would see the ball moving straight vertical upward and then vertically downwards also because for a person inside the train, there is only one velocity that could act on the ball and this velocity is downwards.

On the other hand, the person outside the train would see the ball appear to move along the parabolic path because the ball to this person would have two velocities acting on it: the vertical and horizontal components of velocity.

Explanation:

You might be interested in
X10 POINTS!! a kind of nonfoliated metamorphic rock
iogann1982 [59]
Slate......obviously
5 0
4 years ago
Read 2 more answers
How fast, in meters per second, does an observer need to approach a stationary sound source in order to observe a 1.6 % increase
morpeh [17]

Answer:

The value is  v_o =  5.488 \  m/s

Explanation:

From the question we are told that

     The emitted frequency increased by \Delta f =  1.6 \% = 0.016 \

Let assume that the initial value of the emitted frequency is

      f =   100\%  =  1

Hence new frequency will be  f_n  =  1 +  0.016 = 1.016

Generally from Doppler shift equation we have that

         f_1 =  [\frac{ v \pm v_o}{v \pm + v_s } ] f

Here v  is the speed of sound with value  v =  343 \ m/s

         v_s is the velocity of the sound source which is v_s = 0 \ m/s because it started from rest

         v_o  is the observer velocity So

Generally given that the observer id moving towards the source, the Doppler frequency becomes

                   f_1 =  [\frac{ v + v_o}{v + 0 } ] f

=>                1.016  =  [\frac{ 343  + v_o}{343 } ] * 1  

=>                v_o =  5.488 \  m/s

         

8 0
3 years ago
How would the moon appear to people on earth on this day
zheka24 [161]

Answer:

It would be. Quarter dark

Explanation:

Sun's lights going all the way to the moon but there will still a dark part of it

it's obviously won't be neither complete light nor completely dark

so the right answer is: Quarter dark

3 0
3 years ago
Read 2 more answers
If a 60 W light bulb and a 75 W light bulb operate from 150 V source, which bulb has a greater current in it?
Monica [59]

Answer:

Since it us the resistance that causes the power output, it might be intuitive to think that more resistance produces more power but as P=I^2 * R one actually needs high current and low resistqnce. That means 75 W has lower resistance and higher current.

Now you may think that making the resistance very low, one gets the most power. Not so, as the circuit has wires, power source etc. All the have their resistance. In theory one gets the maximum power over a resistor when the resistor is half of the total resistance of the circuit. This in practice would be inefficient as one would lose half of the total power elsewhere. In practice circuits have fuses that limit the current and one gets the maximum power at the current the fuse is rated to. So if there is 20 A fuse, the maximum power is 2400 W and the corresponding resistance 6 ohm.

8 0
3 years ago
The anther and filament are parts of a flower's:
zaharov [31]
A the stamen :)). haha yea smert
6 0
3 years ago
Read 2 more answers
Other questions:
  • If a lady walks into a room wearing perfume, eventually everyone in the room will be able to smell the perfume even if they are
    8·2 answers
  • W
    6·1 answer
  • Which of the following does not accurately describe the forces that exist with an atom?
    9·1 answer
  • In a certain chemical process, a lab technician supplies 292 J of heat to a system. At the same time, 68.0 J of work are done on
    12·1 answer
  • A ball droped from a building. How fast is it traveling after falling 3.55s
    8·1 answer
  • Please help! What's the answer to this question, A 5.6 nC electric charge is placed in an Electric Field and experiences a force
    11·1 answer
  • Please Help AND NO LINKS OR U WILL BE REPORTED!!
    5·1 answer
  • A plane is going at a speed of 300 km/h at 63 W of N. The wind hits the plane at a direction of 65 km/h at 52 S of E. What is th
    6·1 answer
  • Which is not an example of static electricity?
    5·1 answer
  • A.
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!