need physics help! (there’s a picture)

Answer:

farad

Explanation:

The farad (symbol: F) is the SI derived unit of electrical capacitance, the ability of a body to store an electrical charge. It is named after the English physicist Michael Faraday. hope this helps you :)

Answer:

Ummm... I dont know what the question really is. But I would say in English terms it is an example of Personfiction I guess

Explanation:

Answer:

metre (m) - unit of length

kilograms (kg) - unit of mass

second (s) - unit of time

ampere (A) - unit of electrical current

kelvin (K) - unit of temperature

mole (mol) - unit of the amount of substance

Explanation:

The joule is a derived unit of energy in the International System of Units. It is equal to the energy transferred to an object when a force of one newton acts on that object in the direction of the force's motion through a distance of one metre.

Joule, unit of work or energy in the International System of Units (SI); it is equal to the work done by a force of one newton acting through one metre. Named in honour of the English physicist James Prescott Joule, it equals 107 ergs, or approximately 0.7377 foot-pounds.

Answer:

y = m λ L / d

must use lasers of greater wavelength

Explanation:

The expression for the constructive interference of a double slit is

           d sin θ = m λ

let's use trigonometry to find the angle

          tan θ = y / L

in interference phenomena the angles are small

         tan θ= sin θ/ cos θ = sin θ

         sin θ = y / L

we subjugate

         d y / L = m λ

         y = m λ L / d

In this expression we see that the separation of the lines (and) increases linearly with the wavelength, therefore we must use lasers of greater wavelength

Explanation:

Momentum = mass × speed

p = (30 kg) (3 m/s)

p = 90 kg m/s

Answer:

B 25pa.................................

Answer:

D

Explanation:

Answer

Its D

Explanation:

Answer and Explanation: To determine the direction of force, use Right Hand Rule:

Thumb is directed to the current. In this case, to the left;

Palm of the hand towards magnetic field. In this case, since it is Earth's magnetic field, it is pointing towards south;

Then, fingers are in the direction of Force, which is downward.

In conclusion, Force on the wire is directed Downward.

Answer:

[tex]\Huge \boxed{\mathrm{13.5 \ Joules}}[/tex]

Explanation:

[tex]\sf Kinetic \ energy \ (J)=\frac{1}{2} \cdot mass \ (kg) \cdot (velocity \ (m/s)) ^2[/tex]

[tex]\mathrm{KE=\frac{1}{2} mv^2}[/tex]

The mass of the ball is 3 kg.

The velocity of the ball rolling is 3 m/s.

[tex]\mathrm{KE=\frac{1}{2} \cdot 3 \cdot 3^2}[/tex]

Evaluating and solving for kinetic energy.

[tex]\mathrm{KE=\frac{1}{2} \cdot 3 \cdot 9}[/tex]

[tex]\mathrm{KE=\frac{1}{2} \cdot 27}[/tex]

[tex]\mathrm{KE} =13.5[/tex]

The kinetic energy of the ball is 13.5 Joules.

Answer:

Kinetic energy =1/2mv^2.

1/2×3×3^2.

1/2×27=13.5 or 13 whole number 1/2.

Answer:

10.6 N

Explanation:

F = ma

8 = m * 4

m = 2 kg

F = 2 * 5.3

F = 10.6 N

Answer:

[tex] \boxed{\sf Magnification \ (m) = 2} [/tex]

Given:

Object distance (u) = 25.0 cm

Image distance (v) = -50.0 cm

To Find:

Magnification (m)

Explanation:

[tex]\boxed{\bold{\sf Magnification \: (m) = - \frac{Image \: distance \: (v)}{Object \: distance \: (u)}}}[/tex]

Substituting values of Image distance(v) & Object distance (u) in the equation:

[tex] \sf \implies m = - \frac{( - 50)}{25} [/tex]

-(-50) = 50:

[tex]\sf \implies m = \frac{50}{25} [/tex]

[tex]\sf \implies m = \frac{2 \times \cancel{25}}{ \cancel{25}} [/tex]

[tex]\sf \implies m = 2[/tex]

Answer:

+2

Explanation:

m = -di/do

m = -(-50)/25 = 2

Answer:

The magnetic field will be directed away from me into the screen

Explanation:

The force on a positive charge in a magnetic field can be shown by Lorentz right hand rule. If the palm of the left hand is held out with the fingers (representing the field) held parallel to the palm, and the thumb (representing the direction of motion of the positive charge), held perpendicular to the rest of the fingers. The palm will push in the direction of the force on the charge.

Having this in mind, if the thumb points vertically up, with the with the pal facing the left, then the fingers (representing the field) points away from me into the screen.

Answer:

Mass of chips: Gram ( g )

Your mass: Kilogram ( kg )

Answer:

The ideal spring is 0.030 meters above the starting position.

Explanation:

Let consider that spring is modelled by the Hooke's Law, which is represented by the following expression:

[tex]F = k\cdot \Delta x[/tex]

Where:

[tex]F[/tex] - Force exerted on the ideal spring, measured in newtons.

[tex]k[/tex] - Spring constant, measured in newtons per meter.

[tex]\Delta x[/tex] - Spring elongation, measured in meters.

The elongation is now cleared:

[tex]\Delta x = \frac{F}{k}[/tex]

The initial force experimented by the spring is due to the weight of bananas and potatoes.

[tex]F = (m_{b} + m_{p})\cdot g[/tex]

Where:

[tex]m_{b}[/tex], [tex]m_{p}[/tex] - Masses of bananas and potatoes, measured in kilograms.

[tex]g[/tex] - Gravitational acceleration, measured in meters per square second.

If [tex]m_{b} = 1\,kg[/tex], [tex]m_{p} = 2\,kg[/tex], [tex]g = 9.807\,\frac{m}{s^{2}}[/tex] and [tex]k = 655\,\frac{N}{m}[/tex], the initial elongation of the ideal spring is:

[tex]F = (1\,kg + 2\,kg)\cdot \left(9.807\,\frac{m}{s^{2}} \right)[/tex]

[tex]F = 29.421\,N[/tex]

[tex]\Delta x_{o} = \frac{29.421\,N}{655\,\frac{N}{m} }[/tex]

[tex]\Delta x_{o} = 0.045\,m[/tex]

The final elongation is obtained after eliminating the influence of potatoes due to gravity. That is to say:

[tex]F = m_{b}\cdot g[/tex]

[tex]F = (1\,kg)\cdot \left(9.807\,\frac{m}{s^{2}} \right)[/tex]

[tex]F = 9.807\,N[/tex]

The final elongation of the ideal spring is:

[tex]\Delta x_{f} = \frac{9.807\,N}{655\,\frac{N}{m} }[/tex]

[tex]\Delta x_{f} = 0.015\,m[/tex]

The displacement of the spring due to the removal of potatoes is:

[tex]d = \Delta x_{o} - \Delta x_{f}[/tex]

[tex]d = 0.045\,m-0.015\,m[/tex]

[tex]d = 0.030\,m[/tex]

The ideal spring is 0.030 meters above the starting position.

Answer:

a) KINETIC ENERGY   K = 0.045 J , b) POTENTIAL ENERGY  U = 0.196 J ,

c)  KINETIC ENERGY  K = 9.45 10⁵ J, d) POTENTIAL ENERGY ,    U = 41.16 J ,

e) POTENTIAL ENERGY  U = 154.84 J , f)  ENERGY IS POTENTIAL    U = 9.31 J

g) energy is POTENTIAL   U = 189.336 J

Explanation:

a) The ball is moving with a speed, so it has KINETIC ENERGY

          K = ½ m v²

          K = ½ 10 10⁻³ 3²

          K = 0.045 J

b) The ball is at a given height therefore it has POTENTIAL GRAVITATORY ENERGY

           U = m g y

           U = 10 10-3 9.8 2

           U = 0.196 J

c) The ball has speed so it has KINETIC ENERGY

           K = ½ m v²

           K = ½ 2,100 30²

           K = 9.45 10⁵ J

d) The baby carriage is at a height whereby the POTENTIAL ENERGY

           U = mg h

           U = 0.200 9.8 21

           U = 41.16 J

e) the concrete block is at a height that has POTENTIAL ENERGY

           U = m g h

           U = 0.790 9.8 20

           U = 154.84 J

f) the hood has height, the ENERGY IS POTENTIAL

           U = 0.190 9.8  5

           U = 9.31 J

g) The roller coaster has height and speed, therefore the mechanical energy has a scientific part and a potential part, in general the speed at the top of the mountain is very small, so we can consider that almost all the energy is POTENTIAL

The value they give allows calculating the potential energy

            U = 9.660 9.8 2

            U = 189.336 J

The answer to all the questions on potential energy and kinetic energy have been done below;

A) We are told that the ball is rolling. An object in motion has kinetic energy. Formula for kinetic energy is;

K =  ½mv²

We have; m = 10 g = 0.01 kg and v = 3 m/s

K = ½ × 0.01 × 3²

K = 0.045 J

B) We are told that the ball is held at a height. This means it is at rest and any object at rest has Potential Energy. Formula for potential energy is;

PE = mgh

We have; m = 10g = 0.01 kg and h = 2 m

PE = 0.01 × 9.8 × 2

PE = 0.196 J

C) Like in A above, the ball is in motion. Thus, it has kinetic energy.

K = ½ × 2.1 × 30²

K = 945 J

D) The baby carriage is sitting at rest and therefore has potential energy.

PE = 0.2 × 9.8 × 21

PE = 41.16 J

E) The toy car is in motion and has kinetic energy. Thus;

K = ½ × 1.12 × 4²

K = 8.96 J

F) The cinder block is sitting at rest and has potential energy. Thus;

PE = 0.79 × 9.8 × 20

PE = 154.84 J

G) The bell is at the top of the tower and is at rest and thus has potential energy.

PE = 0.19 × 9.8 × 5

PE = 9.31 J

g) The rollercoaster is at the top at rest and so has potential energy.

PE = 9.66 × 9.8 × 2

PE = 189.336 J

Read more at; https://brainly.com/question/18123782

Answer:

0°

Explanation:

Every 41,000 years, the axial tilt of the Earth varies by oscillating between 22.1  degrees and 24.5 degrees such that the Earth axis orientation with respect to background stars is relatively constant (change is 0) while rotating over one orbital period which is a duration of 12 months. The effect is that the direction of the North or South pole towards the Sun is dependent on the side of the Earth orbit the Earth is located bringing about seasonal variation.

Answer:

common glass

Explanation:

Explanation:

According to Conservation of Linear Momentum :

[tex]m_1u_1+m_2u_2=m_1v_1+m_2v_2[/tex]

[tex]0.05 \times 0.6 + 0.03 \times 0 = 0.05 \times - 0.2 + 0.03 \times v_2[/tex]

[tex]0.04 = 0.03v_2[/tex]

Velocity of marble B after collision = 1.33 m/sec

[tex] \LARGE{ \underline{ \blue{ \tt{Required \: answers}}}}[/tex]

First of all,

We have,

➝ Angle of reflection = 35°

(a) According to law of reflection,

Angle of incidence = Angle of reflection

➝ Angle of incidence = 35°

(b) By using formula,

Angle of Deviation = 180° - 2(Angle of incidence)

From (a),

➝ Angle of Deviation = 180° - 2(35°)

➝ Angle of Deviation = 180° - 70°

➝ Angle of Deviation = 110°

(c) We know,

Angle of Incidence + Glance angle of incidence = 90°

Angle of reflection + Glance angle of reflection = 90°

So,

As angle of incidence = angle of reflection

Then, Angle of glance is also equal.

➝ Angle of glance = 90° - 35° = 55°

━━━━━━━━━━━━━━━━━━━━

Answer:

 w = 2w₀     the angular velocity of man doubles

Explanation:

In this exercise, releasing the weights reduces the moment of inertia

       I= I₀ / 2

Therefore, since the platform system plus man is isolated, the kinetic moment must be conserved

         L₀ = L

       I₀ w₀ = I w

       I₀ w₀ = I₀ / 2 w

       w = 2w₀

therefore the angular velocity of man doubles

Answer:

1) 11.85 m

2) 89300 mm

Explanation:

1) The tortoise starting from point A travels 12 m west and then 150 millimeters (mm) east.

The distance traveled by the tortoise is the differrence between the distance traveled west and the distance traveled east.

Distance traveled west = 12 m

Distance traveled east = 150 mm

But 1 m = 1000 m, Therefore:

Distance traveled east = 150 mm = 150/1000 m = 0.15 m

Distance west the tortoise is from point A = Distance traveled west - Distance traveled east = 12 - 0.15 = 11.85 m

2) 1 cm = 10 m, 1000 mm = 1 m. Therefore:

[tex]145\ cm = \frac{145\ cm * 10\ mm}{1\ cm} = 1450\ mm[/tex]

[tex]80\ m = \frac{80\ m * 1000 mm}{1\ m} = 80000\ mm[/tex]

X  = 80 m+145 cm+7850 mm = 80000 + 1450 + 7850 = 89300 mm

Answer:

Different wavelengths of light also have different frequencies, so the "individual" waves of light are different.

So when you see a given spectra, you are actually watching a superposition of different light waves, and as the waves do not interact that much between them, you can see the different colors.

You can think this similarly as the case with two different sound waves, one high in pitch, and another low.

You can easily identify them, as they do not collide between them.

Now, if you are asking "why the spectrum has different colors".

This is because the levels of energy in each element are different, the outer electrons have weaker bonds, so they will emit photons with less energy (larger wavelength) and so on.

So there are multiple wavelengths because electrons with stronger and weaker bonds are jumping between states at the same time.

Answer: 10 meters/ second squared

Explanation:

started from rest means that its initial velocity is 0

acceleration=(v final - v initial) / time

a= (40 - 0)/4

a= 10

Answer:

Many types of scientific equipment are used to perform different functions in the science lab. Which of the following combinations of equipment would be needed to bring one liter of water to 85°C? a. ... Various pieces of safety equipment are used in the lab to provide protection against injury.

Explanation:

Answer:

no

Explanation:

Answer:

Elisa

Explanation:

I I agree with her because when you're at the top of the ramp you are going down and you are going to go down in an exact fast speed so you do have more energy and momentum at the top of the ramp

Explanation:

The relative velocity is the velocity of the athlete relative to the ground plus the velocity of the javelin relative to the athlete.

v = 4.2 m/s + 10.3 m/s

v = 14.5 m/s

The relative velocity of the javelin relative to the ground be 14.5 m/s.

The rate at which a body's displacement changes in relation to time is known as its velocity. Velocity is a vector quantity with both magnitude and direction. SI unit of velocity is meter/second.

Given parameters:

Velocity of the athlete: u = 4.2 m/s

Velocity of the javelin related to him: v = 10.3 m/s.

The relative velocity  of the javelin relative to the ground is the velocity of the athlete relative to the ground plus the velocity of the javelin relative to the athlete.

So, The relative velocity of the javelin relative to the ground is:

V = 4.2 m/s+ 10.3 m/s

⇒ V= 14.5 m/s

Hence, the relative velocity of the javelin relative to the ground be 14.5 m/s.

Learn more about velocity here:

https://brainly.com/question/18084516

#SPJ2

Answer:

[1, 6, -2]

Explanation:

Given the following :

Initial Position of spaceship : [3 2 4] km

Velocity of spaceship : [-1 2 - 3] km/hr

Location of ship after two hours have passed :

Distance moved by spaceship :

Velocity × time

[-1 2 -3] × 2 = [-2 4 -6]

Location of ship after two hours :

Initial position + distance moved

[3 2 4] + [-2 4 -6] = [3 + (-2)], [2 + 4], [4 + (-6)]

= [3-2, 2+4, 4-6] = [1, 6, -2]

The location of the spaceship after 2 hours have passed is [1, 6, -2]

Since

Initial Position of spaceship : [3 2 4] km

Velocity of spaceship : [-1 2 - 3] km/hr

Now

Location of the ship after two hours should have passed

So,

Distance moved by spaceship should be

= Velocity × time

= [-1 2 -3] × 2

= [-2 4 -6]

Now

Location of ship after two hours should be

= Initial position + distance moved

= [3 2 4] + [-2 4 -6]

= [3 + (-2)], [2 + 4], [4 + (-6)]

= [3-2, 2+4, 4-6]

= [1, 6, -2]

Learn more about velocity here: https://brainly.com/question/24759048

Answer:

at least 22 inches by 30 inches.

Explanation:

For an attic space, there should be an opening to that space at least 22 inches by 30 inches (22' × 30'), and a clear, unobstructed passageway large enough to allow removal of the mechanical appliance such as an air conditioner unit.

An attic can be defined as a space or room which is found just directly below the roof of a house. An attic is a space that is often used by people to store items. It is also generally being referred to as a garret or sky parlor and sometimes it is called a loft.

According to the 2012 International Residential Code, an attic is required to have an opening space of at least 22 inches wide and 30 inches high.

Answer:

forces are acting on it

Explanation:

when a body is spinning and is changing its velocity per unit, the body is said to be acted upon by forces which causes the spinning.

a body won't change in velocity unless acted by forces.

for a spinning body, a centripetal and centrifugal forces are part of those forces responsible for the spinning car and causes a shift in its velocity.