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vodomira [7]
3 years ago
7

The direction of the magnetic field is parallel to the field line at any point in space. A small compass will point in a directi

on perpendicular to the field line.
True
False
Physics
1 answer:
Slav-nsk [51]3 years ago
6 0
I think the answer is false
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A speaker that emits sound is located at the origin of a coordinate system. Two microphones are located on the x-axis, with micr
Taya2010 [7]

Answer:

0.00583 seconds

Explanation:

Distance from mic 1 to origin = 3 m

Distance from mic 2 to origin = 5 m

Speed of sound = 343 m/s

Time taken by mic 1

t_1=\frac{\text{Distance from mic 1 to origin}}{\text{Speed of sound}}\\\Rightarrow t_1=\frac{3}{343}=0.008746\ s

t_2=\frac{\text{Distance from mic 2 to origin}}{\text{Speed of sound}}\\\Rightarrow t_2=\frac{5}{343}=0.014577\ s

Time difference = t₂ - t₁ = 0.14577-0.008746 = 0.00583 s

∴ Difference in time taken by the speaker is 0.00583 s

5 0
3 years ago
If you know all of the forces acting on a moving object, can you tell in which direction the object is moving? if the answer is
Montano1993 [528]

No, knowing all the forces is not enough to know the direction of motion.

<h3>How to use Newton's laws?</h3>

The second Newton's law states that:

F = m*a

This says <u><em>"force equals mass times acceleration".</em></u>

Where acceleration is the rate of change of the speed. From that equation, we conclude that the acceleration is in the same direction that the net force.

So, if we know all the forces acting on an object, we know the net force acting on it, then we know the direction of the acceleration.

<h3>Is this enough to know the direction in which it is moving?</h3>

No, the object does not need to move in the same direction than its acceleration, the direction of motion will also depend on the initial velocity of the object (if it is initially moving with constant speed).

If we don't know that, we can't find the direction of motion.

An example of this can be a car going at 100km/h east-wise.

Then we apply a net force due west, then we have an acceleration due west. But as the initial direction of motion was east, the car will still move to the east, but the velocity will decrease gradually.

So as you can see in that example, we need to know the initial velocity to know the direction in which the object is moving.

If you want to know more about acceleration, you can read:

brainly.com/question/605631

8 0
2 years ago
Pump A can fill a tank of water in 5 hours. Pump B can fill the same tank in 8 hours. How long does it take the two pumps workin
valina [46]

Answer:

It will take both pumps 3.08 hours to fill the tank working together.

Explanation:

Pump A can fill the tank in 5 hours. Assuming that the pump gives out a steady flow of water, in one hour, pump A can fill 1/5th of the tank. Similarly, pump B in an hour, fills up 1/8th of the tank.

We must add up these two values, in order to find how much of the tank the two pumps can fill up together in one hour.

1/5 +1/8 =13/40

So 13/40 of the tank is filled in an hour. We need to find how many hours it will take for the entire tank to be filled. To do so, divide 40 by 13. This gives:

3.08 hours to fill up the tank.

8 0
3 years ago
Read 2 more answers
Name the energy possessed by hot air
sashaice [31]

Answer:

geothermal energy

Explanation:

the energy is obtained from the heat within the surface of earth

6 0
2 years ago
Read 2 more answers
Sound energy cannot travel through <br> A vacuum,a wooden table,polluted air,pond water
FromTheMoon [43]

Sound energy cannot travel through a vacuum.

Explanation:

Waves are periodic disturbance of the space, which travel carrying energy but not matter.

There are two types of waves:

  1. Mechanical waves: mechanical waves propagate through the vibrations of the particles in a medium. Examples of mechanical waves are sound waves.
  2. Electromagnetic waves: these waves consist of periodic oscillations of electric and magnetic fields, perpendicular to each other. These waves do not need a medium to propagate, so they can also travel in a vacuum.

In this problem, we are analyzing sound energy, which is the energy carried by sound waves. Sound waves are mechanical waves, so they need a medium to propagate: therefore, they cannot travel through a vacuum, since there is no medium.

So, sound energy cannot travel through a vacuum.

Learn more about waves:

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brainly.com/question/9077368

#LearnwithBrainly

6 0
3 years ago
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