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3 years ago

14

Stand on a bathroom scale and read your weight. When you lift one foot up so you’re standing on one foot, does the reading chang

e? Does a scale read force or pressure?

1 answer:

lina2011 [118]3 years ago

3 0

Answer: yes the reading changes,

And a scale reads pressure not force

Explanation:

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Technician A says that all injectors in a sequential fuel injection system often use the same power wire. Technician B says that

marusya05 [52]

Answer:

The answer is Technician B

8 0

3 years ago

How the energy affects the speed of the particles in a substance

Daniel [21]

Increases

Explanation:

Energy increases the speed of the particles in a substance. When energy is added to a substance they gain more kinetic to move.

When energy is added to solid, the particles begins to vibrate about their fixed point.
They reach a point where they break lose and the ordered structure of a typical solid collapses.
They begin to move about freely and flow as in a liquid.
When enough energy is added, they break their intermolecular attractions and becomes gaseous.
An increase in energy increases the kinetic energy of the particles of a substance.
The reverse is the case when energy is removed.

Learn more:

Kinetic energy brainly.com/question/6536722

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3 years ago

Which statement is not true about light? 1 point It is a particle and a wave It has mechanical and transverse waves It has mecha

belka [17]

Answer:

Option C

Explanation:

Light is an electromagnetic wave as it has characteristics of both electrical and magnetic waves. It is not a mechanical wave. Water and sound wave are mechanical wave as they need some medium to travel while light do not need any medium to travel.

Hence, option C is correct

4 0

3 years ago

Two coherent sources of radio waves, A and B, are 5.00 meters apart. Each source emits waves with wavelength 6.00 meters. Consid

kompoz [17]

a) 2.5 m

The condition for constructive interference to occur is

$|d_A-d_B|=m \lambda$ (1)

where

dA is the distance of the point from source A

dB is the distance of the point from source B

m is an integer number

$\lambda=6.0 m$ is the wavelength of the wave

We immediately notice that solutions to the equation are only possible if m=0: otherwise, the difference between dA and dB would be at least 6.0 m, which is impossible since the two sources have a separation of 5.0 m (and we are considering only points between the two sources). Therefore we have

$d_A - d_B = 0\\d_A = d_B = \frac{5.0 m}{2}=2.5 m$

So, constructive interference occurs halfway between the two sources.

b) 1 m, 4 m

The condition for destructive interference to occur is

$|d_A-d_B|=(m+\frac{1}{2}) \lambda$ (1)

As before, solutions are only possible for m=0, otherwise the point would not lie between the two sources.

So for m=0, we have:

$|d_A - d_B| = \frac{\lambda}{2} = 3$

So, the two possible solutions are (using $d_B = 5- d_A$ )

$d_A = d_B + 3 \\d_A = (5-d_A)+3\\2d_A = 5+3 = 8\\d=4$

and

$d_B - d_A = 3\\(5-d_A)-d_A=3\\5-2d_A = 3\\2d_A = 2\\d_A = 1$

So, the solutions are dA= 1 m and dA=4 m.

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3 years ago

If a spacecraft is pushed by a thruster, what will happen

ElenaW [278]

D.

This is an accordance with Newton's First Law of Motion, stating that objects in motion remain in motion and objects at rest remain at rest unless acted upon by an external force.

8 0

3 years ago