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
Marina86 [1]
3 years ago
6

Why do lights far tends to blink

Physics
1 answer:
trapecia [35]3 years ago
8 0
The eletcity that runs threw is fine but the light bulb is running out of energy . So it cause it the light is blink !


You might be interested in
A 25.0 g marble sliding to the right at 20.0 cm/s overtakes and collides elastically with a 10.0 g marble moving in the same dir
ikadub [295]
In collision that are categorized as elastic, the total kinetic energy of the system is preserved such that,

   KE1  = KE2

The kinetic energy of the system before the collision is solved below.

  KE1 = (0.5)(25)(20)² + (0.5)(10g)(15)²
  KE1 = 6125 g cm²/s²

This value should also be equal to KE2, which can be calculated using the conditions after the collision.

KE2 = 6125 g cm²/s² = (0.5)(10)(22.1)² + (0.5)(25)(x²)

The value of x from the equation is 17.16 cm/s.

Hence, the answer is 17.16 cm/s. 
6 0
4 years ago
A fire truck emits an 880Hz siren. As the truck approaches an observer on the sidewalk, he perceives the pitch to be 950Hz. Appr
Ludmilka [50]

Answer:

The pitch that he hears after the truck passes and is moving away is 819.6 Hz.

Explanation:

The pitch that he hears after the truck passes and is moving away can be calculated using the following equation:    

f = f_{0}*\frac{v_{s} \pm v_{o}}{v_{s} \pm v_{f}}

Where:

f: is the perceived frequency

f_{0}: is the emitted frequency

v_{s}: is the speed of sound = 340 m/s

v_{o}: is the speed of the observer = 0 (he is not moving)

v_{f}: is the speed of the fire truck

First, we need to find the speed of the fire truck. When it approaches the observer we have:

f = f_{0}*\frac{v_{s} + v_{o}}{v_{s} - v_{f}}

950 Hz = 880 Hz*\frac{340 m/s}{340 m/s - v_{f}}

v_{f} = 340 m/s - \frac{880 Hz*340 m/s}{950 Hz}

v_{f} = 25.05 m/s

Hence, the speed of the fire truck is 25.05 m/s.

Now, we can calculate the pitch that the observer hears after the truck passes:

f = f_{0}*\frac{v_{s} - v_{o}}{v_{s} + v_{f}}

f = 880 Hz*\frac{340 m/s}{340 m/s + 25.05 m/s}

f = 819.6 Hz

Therefore, the pitch that he hears after the truck passes and is moving away is 819.6 Hz.

I hope it helps you!                                                          

7 0
3 years ago
When you jump upward, your hang time is the time your feet are off the ground. Does hang time depend on the vertical component o
hjlf

Answer:

It only depends on the vertical component

Explanation:

Hello!

The horizontal component will tell you how much you travel in that direction.

You could have a large horizontal velocity, but if the vertical velocity is zero, you will never be out of the ground. Similarly, you could have a zero horizontal velocity, but if you have a non-zero vertical velocity you will be some time off the ground. This time can be calculated by two means, one is using the equation of motion (position as a function of time) and the other using the velocity as a fucntion of time.

For the former you must find the time when the position is zero.

Lets consider the origin of teh coordinate system at your feet

y(t) = vt - (1/2)gt^2

We are looking for a time t' for which y(t')=0

0 = vt' - (1/2)gt'^2

vt' = (1/2)gt'^2

The trivial solution is when t'=0 which is the initial position, however we are looking for t'≠0, therefore we can divide teh last equation by t'

v = (1/2)gt'

Solving for t'

t' = (2v/g)

7 0
3 years ago
A major league pitcher can throw a baseball with a kinetic energy of 150 J. How much work must the pitcher do to the ball to giv
kenny6666 [7]

Answer:

A= 150 J

Explanation:

Kinetic energy is the energy of an object in motion.

The formula for kinetic energy is ;

K.E = 1/2 * m *v²  where m is mass and v is velocity

Work done is equal to change in kinetic energy

W= Δ K.E

Given that K.E = 150 J

Taking that the ball was stationary before it was thrown, this makes its initial kinetic energy to be 0 J so the work done will be

W=  Δ K.E

W= 150 - 0

W= 150 J

4 0
3 years ago
Maria rides a bicycle at a velocity of 8 m sl. She brakes suddenly and stops after a distance of 2 m. What is the acceleration o
Svetach [21]

But I can help you if you need to answer this question

Dony

8 0
3 years ago
Other questions:
  • A baseball player slides into second base. What happens to his momentum?
    11·2 answers
  • What are some inherited traits and learned behaviors of polar bears?
    13·1 answer
  • Two students are working together on an experiment that measures the effect of different liquid fertilizers on the thickness of
    7·1 answer
  • The age of the universe is around 100,000,000,000,000,000s. A top quark has a lifetime of roughly 0.000000000000000000000001s. W
    5·1 answer
  • I will mark brainliest
    7·1 answer
  • How long does it take for the hubble telescope to orbit earth
    8·2 answers
  • What does keplers second law of planetary monition imply
    8·2 answers
  • 1. - Electronic configuration of Mn​
    9·2 answers
  • A 1.2 KG rubber ball is being thrown in the air if the ball is traveling at 2.0 M/S when it is 3.0 M off the ground what is the
    14·1 answer
  • You want to determine whether the mass of an object attached to a parachute affects the time it takes to fall to the ground. In
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!