I need answers for this wave unit

Answer:

Electric forces exist among stationary electric charges; both electric and magnetic forces exist among moving electric charges. The magnetic force between two moving charges may be described as the effect exerted upon either charge by a magnetic field created by the other.

Answer:

i think this could help you

Answer:

because of gravity the ball falls

Answer:

Gravity

Explanation:

Gravity is the force the world gives which I magnetic and yeah-

Answer:

blocks of ice are usually covered with cloth or sawdust while being stored

I believe the answer is purple

Answer:

Explained below

Explanation:

For the geometric meaning, I've attached a parallelogram showing two vectors a and B and also the angle between them as θ.

We can see that the two vectors are adjacent to each other.

So the magnitude of the product of the two vectors is simply the area of the parallelogram which is base x height. Thus;

Magnitude = |a| sin θ × |b|

This can be rewritten as;

|a|•|b| sin θ

Answer:

Tissue: cardiac muscle

Organ: Heart

Organ System: Human Body, Circulatory System

Explanation:

The cardiac muscle makes up an organ, making it a tissue

The Heart makes up a organ system, making it an organ

Both the human Body and The Circulatory System make up an organism, making them organisms

Answer:

38 N, 40.0° below the horizontal

Explanation:

Force exerted by an object equals mass times acceleration of that object: F = m ⨉ a. To use this formula, you need to use SI units: Newtons for force, kilograms for mass, and meters per second squared for acceleration.

Answer:

i think its shiny mirror

Explanation:

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Answer:

the shiny mirror

Answer:

A)  attached below

B) attached below

C) Anti-clockwise

D) 3.27 secs

Explanation:

A) Diagram of the gyroscope indicating direction of

attached below

B) Diagram of torque due to gravity about support point

Attached below

C) The direction the gyroscope will precess is ANTICLOCKWISE

D) Time required for one precession of the gyroscope

 use the relation below

MgL = ΔIw / Δt  

∴ Δt = ΔIw / MgL

       =( 1/2 * 2 * 0.25^2 * 2π * 2000 ) / ( 2 * 10 * 0.2 * 60 )

       = 3.27 secs

Answer:

Condensation can also produce water droplets on the outside of soda cans or glasses of cold water. When warm air hits the cold surface, it reaches its dew point and condenses. This leaves droplets of water on the glass or can.

Explanation:

Answer:

A gamma rays

B x-rays

D radio waves

E visible light

The four types of electromagnetic radiation are: gamma rays, X-rays,  radio waves, and visible light.

A flow of energy in which the electrical and magnetic fields change simultaneously is known as electromagnetic radiation. Electromagnetic radiation includes radio waves, microwaves, infrared, visible, ultraviolet, X, and gamma rays among others.

Through oscillating magnetic and electrical fields produced by their particles, electromagnetic radiation travels through space and vacuum. Sir James Clerk Maxwell, a Scottish scientist, presented the Electromagnetic Radiation theory in the early 1870s.

Heinrich Hertz, a German physicist, confirmed it experimentally. According to Maxwell, as an electrically charged particle accelerates, alternating electrical and magnetic fields are created, aiding the particle's propagation.

Gamma rays, X-rays,  radio waves, and visible light are four types of electromagnetic radiation.

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Answer:

onlu 1 universe

Explanation:

it's 9:46AM for me lol

Answer:

lol it's 11:46 pm for me, just trying to get every done before tommorow aka the last day of school

Answer:

Younger by nanoseconds

Explanation:

Not entirely sure :O

Answer:

The answer is "[tex]1.144 \times 10^{-4} \ m[/tex]".

Explanation:

[tex]w=\frac{2.44 \lambda L}{D}\\\\D=\frac{2.44 \lambda L}{w}\\\\[/tex]

   [tex]=\frac{2.44 \times 633 \times 10^{-9}\times 4 }{0.054}\\\\=\frac{6178.08\times 10^{-9}}{0.054}\\\\=1.144 \times 10^{-4} \ m[/tex]

Dense because food do be dense tho

Answer:

The volume of the gas increases.

Explanation:

Increased temperature increases kinetic energy of gaseous molecules which increases their collisions and velocities. As a result, gas expands. This is in accordance with Charles' law of gases.

The volume of the temperature of gas increases.

The volume of the gas increases as the temperature increases. As temperature increases, the molecules of the gas have more kinetic energy. They strike the surface of the container with more force. If the container can expand, then the volume increases until the pressure returns to its original value.

Increased temperature increases the kinetic energy of gaseous molecules which increases their collisions and velocities. As a result, the gas expands. This is by Charles' law of gases.

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Explanation:

A ray of light travels through air (n = 1.00) and approaching the boundary with ... The angle of incidence is 45.0°. ... Determine the angle of refraction at the linseed oil-water boundary. n= c/ ...

Answer:

"12.122 m/s²" is the appropriate solution.

Explanation:

The given values in the question are:

Length,

l = 49.0 cm

or,

 = [tex]49.0\times 10^{-2} \ m[/tex]

Time taken,

[tex]T = \frac{125}{99.0}[/tex]

   [tex]=1.2626 \ s[/tex]

Now,

As we know,

⇒  [tex]T = 2 \pi\sqrt{\frac{l}{g} }[/tex]

or,

⇒  [tex]T^2=4 \pi^2[\frac{l}{g} ][/tex]

     [tex]g = 4\pi^2[\frac{l}{T^2} ][/tex]

By substituting the above given values, we get

        [tex]=\frac{4\times (3.14)^2\times (49.0\times 10^{-2})}{(1.2626)^2}[/tex]

        [tex]=\frac{39.4384\times 49.0\times 10^{-2}}{1.59415876}[/tex]

        [tex]=\frac{19.324816}{1.59415876}[/tex]

        [tex]=12.122 \ m/s^2[/tex]

Answer:

x = 45 cm

Explanation:

Given that,

The length of a rod, L = 50 cm

Mass, m₁ = 0.2 kg

It is at 40cm from the left end of the rod.

We need to find the distance from the left end of the rod should a 0.6kg mass be hung to balance the rod.

The centre of mass of the rod is at 25 cm.

Taking moments of both masses such that,

[tex]15\times 0.2=x\times 0.6\\\\x=\drac{3}{0.6}\\\\x=5\ cm[/tex]

The distance from the left end is 40+5 = 45 cm.

Hence, at a distance of 45 cm from the left end it will balance the rod.

violet

it has the shortest wavelength

Answer:

a.work done=force *displacement

=500N*46m

=23000 Joule

b.power=work done/time taken

=23000/25

=920 watt

c.GPE=m*g*h(m=mass,g=gravity due to acceleration,h=height)

=60kg*9.8m/s*14m

=8232 joule

Explanation:

The potential difference across Vb - Va is 38 Volts

Considering the given circuit we have to apply Kirchoff's Voltage Law (KVL) in order to calculate potential difference across Va and Vb.

  Here it is given that current I = 1.5 A flows from point a to b. With reference to the direction of flow of current the 20V battery is considered of positive potential and the 12V battery is considered of negative potential.

Applying KVL :  Va - Vb = 20V + (1.5 × 20)V - 12V

                          Va - Vb = 38V

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Answer:

blanket= texture, thermal conductivity,and mass

glass= the rest

Explanation:

im not good at explaining

Answer:

15.64 V

Explanation:

From the question given above, the following data were obtained:

Capacitor (C) = 3.33x10¯⁶ F

Energy (E) = 8.15×10¯⁴ J

Voltage (V) =?

The voltage across the capacitor can be obtained as follow:

E = ½CV²

8.15×10¯⁴ = 3.33x10¯⁶ × V²

Divide both side by 3.33x10¯⁶

V² = 8.15×10¯⁴ / 3.33x10¯⁶

Take the square root of both side

V = √(8.15×10¯⁴ / 3.33x10¯⁶)

V = 15.64 V

Thus, the voltage across the capacitor is 15.64 V

Answer:

22.12

Explanation:

on accellus

Answer:

0.43622 seconds

0.9158 foot

-4.43 ffot/sec

Explanation:

we first find the period of oscillation

= 2π√w/gk

= 2π√4000/32x2600

= 2π√0.00481

= 2π0.0694

= 0.43622

b. we find the angular velocity

2π/T

= 2π/0.43622

= 14.41 rad/sec

we find displacement

rom the calculation in the attachment

Ф = -144.1

initial condition

1*cos(-144.1 rad)

= 0.9158 foot

initial velocity of the car

= (-1)(14.41)sin(ω(0)-144.1)

= -4.44 foot/sec

Answer:

Answer 43cm

Explenation:

if you divide it to 4 it will convert to 43 so answer is 43cm if this wrong im sorry but mine is perfect thankss :)

Answer:

At the centre

Explanation:

To prove the position of the centre of mass, usually we take a strip across the circular disc and call it dy; calculate the length of the strip; calculate the mass per unit area of the disc. And then when we carry out some integral operations using R and -R as the boundaries we will arrive at y_cm = 0 which means the centre y_cm is at the centre of mass of this uniform disc.