help please, it’s on my physics paper!

Answer:  

Explanation:

Answer:

Explanation:

There are 2 ways to help with this. Explain the details, which are fairly simple in this topic, or give the formula. My hope is that an explanation will last longer than memorizing the formula. I give you both.

If a wave has frequency, f, of 3 Hz, its period, T, is

1

3

s

. The wavelength,

λ

, is 5 meters. That means that in the time of one period, the wave travels 5 m.

In general,

S

p

e

e

d

=

distance

time

In applying this general definition of speed

↑

to a wave, we have

speed of the wave

=

wavelength

period

Note: we generally use v for speed of a wave. Using the variable names, then that last formula is written

v

=

λ

T

Since

T

=

1

f

, we can also say that

v

=

λ

⋅

f

So, using that last formula

v

=

5

m

⋅

3

H

z

=

15

m

s

Note: the unit Hz is equivalent to what it was called 100 years ago,

cycles

second

(

also cps

)

. Cycles is not a true unit, so the Hz contributed only the "per second" to the result

15

m

s

.

Answer: the speed is =30ms^-1 The speed of a wave is given by "speed" (ms^-1)= "frequency(Hz)" xx "wavelength (m)" The frequency is f=100Hz The wavelength is lambda=0.3m The speed is v=lambdaf=0.3*100=30ms^-1

Explanation:

Answer:  B

Explanation:

Answer:.....................

solar panels

Answer: The crest of one wave overlaps with the trough of another

Explanation:

I took the test and got 100%. This is the correct answer

The best description of the destructive interference of light is the crest of one wave overlaps with the trough of another.

Destructive interference takes place when waves come together in such a manner that they completely cancel each other out or amplitude of the resulting wave decreased.

The highest surface part of a wave is called the crest, and the lowest part is the trough.

To learn more about Destructive interference here

https://brainly.com/question/16098226

#SPJ2

Answer:

yes

Explanation:

because it emits more than one ray of light energy

Answer:

16.2m/s

Explanation:

Kinetic energy=1/2mass*speed squared

KE=1/2mv^2

Data,

KE=85J

M=0.65kg

V=?

85J=1/2(0.65kg)V^2

Cross multiply

2 *85=0.65V^2

Divide both sides by 0.65

170/0.65=v^2

V=✓(170/0.65)

V= 16.172m/s

First option is collect

Answer:

Volume displaced by ducky = 75 mL = 7.5 x 10⁻⁵ m³

Mass displaced by the ducky = 7.5 x 10⁻² kg = 75 grams

Explanation:

The ducky will displace the volume of the water equal to its own volume.

Volume displaced by ducky = 75 mL = 7.5 x 10⁻⁵ m³

And the mass displaced by ducky will be equal to:

Mass displaced by the ducky = (Density of Water)(Volume displaced by ducky)

Mass displaced by the ducky = (1000 kg/m³)(7.5 x 10⁻⁵ m³)

Mass displaced by the ducky = 7.5 x 10⁻² kg = 75 grams

If the lens of our eyes were concave, we would not be able to see. We would be blind. This is because our eyes form a visual image on the same side of the lens at the object being viewed. Thus, a concave lens would result in the visual image focusing in front of the eye, not the retina inside the eye. This would mean that no signals would be sent to the brain, and vision would not be possible.

Answer:

0.297 m/s

Explanation:

It is 0.297 m/s. The study of rotational motion in the absence of forces is known as angular kinematics.

To learn more about Angular Kinematics refer to:

https://brainly.com/question/13572778

#SPJ2

Answer:

boundary

Explanation:

Answer:

distance and time of the motion

Answer:  Their temperature decreases dramatically, but their luminosity increases only slightly.

Explanation: Edmentum answer

this is my answer sure po ako n tama iyan

answer: the third one

Answer:

Standing in a moving bus may lead the person fall when the driver will apply brake.

Explanation:

According to Newton's third law of motion, there is an equal and opposite reaction to every action. When the bus is moving, the person standing is in the state of rest. The moment the driver applies brake, the bus stops. The stopping of the bus makes the person in the stationary position change in motion. Because of this force, the person may fall and collide if he is standing instead of sitting in the moving bus.

Answer:

In fact, the mass m and the force constant k are the only factors that affect the period and frequency of simple harmonic motion.

The time taken is 10 years.

The term simple interest is an interest that is charged only on the principal and not on the interest.

We have the following;

Principal =  500 birr

amount = 900 birr

rate = 8%

Interest = 900 birr - 500 birr = 400 birr

400 = 500 × 8 × T/100

400 × 100 = 500 × 8 × T

T = 400 × 100/500 × 8

T = 10 years

Learn more about simple interest:https://brainly.com/question/2793278

Answer:

10 years

Explanation:

To solve this first we have to find the simple interest.

Let us find it now.

Interest = birr 900 - birr 500

             = birr 400

Now we are having,

Amount = birr 900

Principal = birr 500

Interest = birr 400

rate = 8%

Period of time = ?

Let us use the formula to find the period of time.

Simple interest = Principal × Rate × Time ÷ 100

birr 400  = birr 500 × 8 × t ÷ 100

birr 400 × 100 = 4000t

40000 = 4000t

Divide both sides by 4000.

10 = t

Therefore, the time is 10 years.

Let me know if you have any other questions. :-)

Answer:

4cm

Explanation:

If it's a simple ratio 2cm:10N to ?cm:20N, It should be 4cm:20N.

[tex]\boxed{\large{\bold{\textbf{\textsf{{\color{blue}{Answer}}}}}}:)}[/tex]

What happens after condensation to cause precipitation

Answer:

D

Explanation:

Spy gear is different from Spyware.

Answer:

the acceleration of gravity on Planet X is 19.89 m/s^2

Explanation:

The computation of the acceleration of gravity on Planet X is shown below:

T = 2π√l ÷ √g

g = l ÷ (T÷ 2π)^2

= 4π^2l ÷ T^2

= 4π^2× 0.2 ÷ 0.63^2

= 19.89 m/s^2

Hence, the acceleration of gravity on Planet X is 19.89 m/s^2

In this way it should be calculated

The same would be relevant and cosnidered

Remember that moment before collision is equal to the moment after collision.

[tex](m1 \times u1) + (m2 \times u2) = (m1 \times v1) + (m2 \times u2)[/tex]

Plugging in our values,

[tex](6 \times 4) - (3 \times 2) = (6 \times 1) + (3 \times v2) \\ 24 - 6 = 6 \times 3v2 \\ 18 = 18v2 \\ v2 = 1 {ms}^{ - 1} [/tex]

The velocity of the second car after the collision is 8 m/s.

The law of conservation of momentum states that, within the domain, the total momentum before collision is equal to the momentum after collision.

Here,

Mass of the car to the right, m₁ = 6 kg

Mass of the car to the left, m₂ = 3 kg

Velocity of the first car before collision, u₁ = 4 m/s

Velocity of the second car before collision, u₂ = 2 m/s

Velocity of the first car after collision, v₁ = 1 m/s

According to the conservation of momentum,

(m₁u₁) + (m₂u₂) = (m₁v₁) + (m₂v₂)

(6x4) + (3x2) = (6x1) + (3v₂)

3v₂ = 24

Therefore, v₂ = 24/3

v₂ = 8 m/s

Hence,

The velocity of the second car after the collision is 8 m/s.

To learn more about law of conservation of momentum, click:

https://brainly.com/question/17140635

#SPJ3

Answer:

can mn ever be created nor destroyed transformed transferd

Answer:

the principal of conservation states that energy can not be created or destroyes but it only transfer from one form to another

mark me brainliest

Answer:

Current, I = 4.75 Amps

Explanation:

Given the following data;

Voltage = 19 V

Resistance = 4 Ohms

To find the current;

Ohm's law states that at constant temperature, the current flowing in an electrical circuit is directly proportional to the voltage applied across the two points and inversely proportional to the resistance in the electrical circuit.

Mathematically, Ohm's law is given by the formula;

[tex] V = IR[/tex]

Where;

V represents voltage measured in voltage.

I represents current measured in amperes.

R represents resistance measured in ohms.

Making current (I) the subject of formula, we have;

[tex] I = \frac {V}{R} [/tex]

Substituting into the formula, we have;

[tex] I = \frac {19}{4} [/tex]

Current, I = 4.75 Amps

The horizontal component of velocity is

(22 m/s) • cosine(62°).

The vertical component of velocity is

(22 m/s) • sine(62°).

These are the original components, right after the kick. As time goes on, the horizontal one doesn't change. But the vertical one gets bigger and bigger, because gravity is accelerating the ball downward.

That's the complete story of projectile motion.