The blocks shown in the pictures below are all made of wood. Which car will move the fastest?

Answers

Answer 1

Answer:

The one with the less mass

Explanation:


Related Questions

An astronaut lands on an alien planet. He places a pendulum (L = 0.200 m) on the surface and sets it in simple harmonic motion, as shown in this graph.

(a) What is the period and frequency of the pendulum’s motion?
(b) How many seconds out of phase with the displacements shown would graphs of the velocity and acceleration be?
(c) What is the acceleration due to gravity on the surface of the planet in? Determine the number of g-forces.
Show any necessary calculations.

Answers

I think b or c sorry

in physics the word medium means

A. A type of paint
B. A size.
C. A material or substance.
D. A psychic.

Answers

Answer:

the answer is C a material or substance

Explanation:

BRAINLIEST PLZZZZZZZZZZZZZZZ

C- a material or substance

A prism is often used to show the different wavelengths of light or colors that can be found in white light. In one paragraph, using your own words, explain how the prism causes these colors to appear. Be sure to use proper spelling, grammar, and punctuation.

Answers

Answer:

A prism causes the different wavelengths of light or colors that can be found in white light because the prism is white, and white light contains all colors in the visible light spectrum. So an object that reflects all the colors in the visible light spectrum will appear white in color because white light contains all colors in the visible light spectrum.

Explanation:

I hope this helps! I just did a test with this question and I got the answer right! This is the answer that I put. Good luck :)

A crane lifts a load of 15000N to a height 40m in 50 seconds. Calculate the power of the crane​

Answers

Answer:

P = 12000 W

Explanation:

General data:

F = 15000 N d = 40 mt = 50 sP = ?

Work is force times unit of distance. So in order to calculate the power we must first calculate the work.

Formula:

[tex]\boxed{\bold{W=\frac{F}{d}}}[/tex]

Replace and solve

[tex]\boxed{\bold{W=\frac{15000\ N}{40\ m}}}[/tex][tex]\boxed{\bold{W=600000\ J}}[/tex]

once the work is found, we proceed to find the power according to the formula:

[tex]\boxed{\bold{P=\frac{W}{t}}}[/tex][tex]\boxed{\bold{P=\frac{600000\ J}{50\ s}}}[/tex][tex]\boxed{\boxed{\bold{P=12000\ W}}}[/tex]

The power of the crane is 12000 Watts.

Greetings.

An air track car with a mass of 0.55 kg and velocity of 5.8 m/s to the right collides and couples with a 0.45 kg car moving to the left with a velocity of 3.9 m/s. What is the combined velocity of the cars just after the collision?

Answers

Explanation:

Given:

m1 = 0.55 kg

m2 = 0.45 kg

vi1 = +5.8 m/a

vi2 = -3.9 m/a

Solve for V

m1vi1 + m2vi2 = (m1 + m2)V

(0.55 kg)(+5.8 m/s) + (0.45 kg)(-3.9 m/s) = (0.55 + 0.45)V

V = +1.46 m/a

This means that the combined mass after the collision is moving to the right at 1.46 m/s

Please help me ; - ;
Match the food choice with its potential long-term result.
1. eating a piece of cake with 8 grams of fat
2. eating an egg salad sandwich on whole grain bread with 9 grams of fat
3. eating a cheeseburger with 48 grams of fat

A. heart disease
B. obesity
C. weight loss

Answers

Answer:

2 = C

3 = B

1 = A

Explanation:

You have viewed multiple unknown astronomical objects in this lab activity. In all tests, what was your test variable (independent variable)?

The amount of an element in each object
The type of elements in each spectrum
The astronomical object viewed by the spectrometer

Answers

Answer:

Could you give information about the lab

Explanation:

Answer:

The spectrum of each astronomical object

Explanation:

I took the test and got it right

what are the two
factors in which weight of object depends?​

Answers

Answer:

An object's weight depends on its mass (the amount of matter it consists of) and the strength of the gravitational pull.

Two factors that affect the weight of an object is mass and constant gravitational force.

URGENT HELP PLS

1. Given a force-displacement curve as shown in the figure, what does the area of the region enclosed by the curve represent?

A. The force acting on the object

B. The displacement of the object

C. The magnitude of the coefficient of static friction

D. The work done on the object by the force

Answers

Explanation:

work done is equals to force into displacement in the direction of force

Ans: D

Which statement best describes the relationship between an object's density and its index of refraction?

A. As the mass per unit volume of the substance increases, the refractive index decreases.

B. As the mass of the object increases, the refractive index decreases.

C. As the physical density of the substance increases, the refractive index increases

D. As the optical density increases, the refractive index increases​

Answers

Answer:

D. As the optical density increases, the refractive index increases

Answer: the answer is D

Explanation: I took the test

Te agrada realizaTe agrada realizar actividades físicas?, ¿por qué?r actividades físicas?, ¿por qué?

Answers

Danabausysjlddh dkd dhdudbd

A 2800 kg truck moving at 12 m/s to the right hits a stopped 1100 kg car. What is the combined velocity the moment they stick together?

Answers

Answer:

The combined velocity is 8.61 m/s.

Explanation:

Given that,

The mass of a truck, m = 2800 kg

Initial speed of truck, u = 12 m/s

The mass of a car, m' = 1100 kg

Initial speed of the car, u' = 0

We need to find the combined velocity the moment they stick together. Let it is V. Using the conservation of momentum.

[tex]m_1v_1+m_2v_2=(m_1+m_2)V\\\\V=\dfrac{m_1v_1+m_2v_2}{(m_1+m_2)}\\\\V=\dfrac{2800\times 12+0}{2800+1100}\\\\V=8.61\ m/s[/tex]

So, the combined velocity is 8.61 m/s.

What the use of physics in our life​

Answers

Answer:

the use of physics in our life is to be a science student.

You have your headphones turned all the way up (100 dB).

a. If you want them to sound half as loud, to what decibel level must the music be set?

b. If you want them to sound 1/4 as loud, to what decibel level must the music be set?

Answers

Answer:

a. 90 dB

b. 80 dB

Explanation:

The given parameter of the sound is as follows;

The level to which the headphones are tuned = All the way up

The intensity of the sound of the headphones when tuned all the way up = 100 dB

a. The relationship between level change in loudness, ΔL, and the ratio of loudness, 'x', is presented as follows;

ΔL = 10·log₂(x) ≈ 33.22·log(x)

Therefore, for a sound to be half as loud, we have x = 1/2, therefore;

ΔL = 10·log₂(1/2) = 10·log₂(2⁻¹) = -10 ≈ 33.22·log(1/2)

The change in the intensity level for a sound half as loud, ΔL = -10 dB

Given that the sound was initially at 100 dB, the new level for a sound half as loud = 100 dB + ΔL = 100 dB - 10 dB = 90 dB

The decibel level the music must be set for a sound half as loud = 90 dB

b. In order for the sound to be 1/4 as loud, we have;

ΔL = 10·log₂(1/4) = 10·log₂(2⁻²) = -20

Therefore, the change in the level of the sound intensity level, ΔL by -20 dB will given a sound that is 1/4 as loud

The initial intensity level = 100 dB

The intensity level for a sound 1/4 as loud = 100 dB - 20 dB = 80 dB

how does current flowing through a resistor affect the temperature​

Answers

The answer is... When electrical current flows through a type or kind of material, the electrons come in contact with the small atoms of the material and their collision produces heat. When the flow is through or going through a resistor, the resistance is offered to the flow and the collisions will generate heat. This is the reason why temperature rises. Hope this helps!

Two parallel plates have an area of
0.00100 m^2. How much charge
must you place on them to create a
1000 N/C field between the plates?
(The answer is *10^-12 C. Just fill
in the number, not the power.)

Answers

Answer:

8.85

Explanation:

The computation of the charge that must place on them in order to create 1000 N/C field between the plates is shown below:

We know that

E = (Q/A) ÷ E_o

1000 = Q ÷ 0.01×8.85× 10^-12

Q = 8.85 × 10^-12

So,

The answer is 8.85

The above formula should be applied so that the correct value could come

And, the same would be relevant

Answer:

8.85

Explanation:

acellus

measure the thickness of the brake rotor. how thick is the brake rotor? please help I've Kittery spent forever trying to do this​

Answers

Answer:

Explanation:

its reading the caliper

as the 0 lines up w the 1/8" mark, it is 1 1/8"

Answer:

The minimum thickness will be stamped somewhere. You see there's part numbers and other things here you might need to use a wire brush to kind of clean it up but that's the thicknessUse a micrometer at the thinnest point on the surface of the rotor where it meets the pads to measure the minimum operational thickness. If your rotor needs to be cut or has worn passed this thickness, you'll need new rotors. You may also discover your rotor has Disc Thickness Variation.

What would make oppositely charged objects attract each other more? increasing the positive charge of the positively charged object and increasing the negative charge of the negatively charged object decreasing the positive charge of the positively charged object and decreasing the negative charge of the negatively charged object increasing the distance between the positively charged object and the negatively charged object maintaining the distance between the positively charged object and the negatively charged object

Answers

Answer:

A.

Explanation:

I did the test :D

Define Initial velocity.​

Answers

Answer:

Initial velocity is defined as the velocity at time t=0.

Its Unit is m/s.

represented by u.

calculated by using formula.

v=u+at

u=v-at.

Answer:

Initial velocity is the velocity which the body has in the beginning of the given time period

Hope it helps

-------☆゚.・。゚ᵴɒƙυᴚᴀ_ƨȶäᴎ❀

why are nuclear reactions used in nuclear power plants

Answers

Answer:

Nuclear reactors are the heart of a nuclear power plant. They contain and control nuclear chain reactions that produce heat through a physical process called fission. That heat is used to make steam that spins a turbine to create electricity.

Answer:

A nuclear power plant's heart is made up of nuclear reactors. They contain and regulate nuclear chain reactions, which produce heat via a physical process known as fission. This heat is converted to steam, which powers a turbine to generate energy.

Un automóvil se mueve 80 m en 40 s con una velocidad constante. ¿Cuál es la velocidad del automóvil? Ayuda plissssssssssssssssssssss

Answers

Answer:

Velocidad = 2 m/s

Explanation:

Dados los siguientes datos;

Distancia = 80 m

Tiempo = 40 s

Para encontrar la velocidad del automóvil;

La velocidad se puede definir como la tasa de cambio en el desplazamiento (distancia) con el tiempo.

La velocidad es una cantidad vectorial y, como tal, tiene magnitud y dirección.

Matemáticamente, la velocidad viene dada por la ecuación;

[tex] Velocidad = \frac {distancia} {tiempo} [/tex]

Sustituyendo en la fórmula, tenemos;

Velocidad = 80/40

Velocidad = 2 m/s

Our founding fathers got many of their ideas about a republican
government from the Romans.
A: True
B: False

Answers

True, give brainliest to the person above/below me! They deserve it.

how is an earthquake's origin and intensity identified?

Answers

Answer:

using a seismograph

Explanation:

Why is the EM important?

Answers

Answer:

It is important because it furnishes information about the composition, the temperature and maybe the mass or relative velocity of the body that emits or absorbs it.

Explanation:

Fermi energy of conduction electrons in silver is 0.548 J. Calculate the number of such electrons in unit cm3

Answers

Answer:

[tex]n=1.86*10^{-30}m^3[/tex]

Explanation:

From the question we are told that:

Fermi energy of conduction electrons [tex]E_f=0.548J[/tex]

Generally the equation for Fermi energy is mathematically given by

 [tex]E_f=\frac{3}{\pi}^2/3*\frac{h^2}{8m}*{n^{2/3}}[/tex]

 [tex]E_f=\frac{3}{\pi}^2/3*\frac{h^2}{8m}*{n^{2/3}}[/tex]

 [tex]{n^{2/3}}=\frac{E_f}{\frac{3}{\pi}^2/3*\frac{h^2}{8m}}[/tex]

Where

h= Planck's constant

 [tex]{n^{2/3}}=\frac{E_f}{\frac{3}{\pi}^2/3*\frac{h^2}{8m}}[/tex]

 [tex]{n^{2/3}}=\frac{0.548J}{3.62*10^{-19}}[/tex]

 [tex]n=(1.51*10^{-20})^{3/2}[/tex]

 [tex]n=1.86*10^{-30}m^3[/tex]

Which two types of electromagnetic waves have higher frequencies than the waves that make up ultraviolet light?
o radio waves and infrared light
O visible light and X-rays
O microwaves and gamma rays
gamma rays and X-rays

Answers

Answer:

Gamma rays and x rays

Explanation: just took the test

Gamma rays and X-rays have higher frequencies than the waves that make up ultraviolet light. Hence option D is correct.

What is Electromagnetic Spectrum ?

Electromagnetic spectrum is nothing but the range of wavelengths or frequencies on which electromagnetic radiation extend. it is whole distribution of electromagnetic waves according to frequency or wavelength. Electromagnetic wave is nothing but a photon which carries energy. Photon wave has frequency, wavelength as well as amplitude.

Electromagnetic spectrum is show in figure.

There is inverse relation between wavelength and frequency as υ = c/λ

where υ is the frequency, λ is the wavelength and c is the speed of light.

as wavelength increases, frequency decreases vice verse.

In this figure we can see that radio waves has highest wavelength hence it has lowest frequency. X ray and gamma rays has lowest wavelength hence it has highest frequency.

Hence option D is correct.

To know more about electromagnetic waves, click :

https://brainly.com/question/18165320

#SPJ7.

Pravat exerts a force of 30 N to lift a bag of groceries 0.5 m. How much work did Pravat do on the bag?

Answers

Answer:

15 J

Explanation:

Work = Force x Distance

15= 30 x 0.5

Have a blessed day!

Answer:Pravat did 15 J of work

Explanation:

a light ray reflects with an angle of 65 degrees what is the angle of refraction?
A. 65 degrees
B. 90 degrees
C. 32.5 degrees
D. 25 degrees
brainliest if correct

Answers

Answer:

A

Explanation:

A because the reflection and refraction should always be the same angle

Read the text again

Answers

i think it is 1.F2.T3.T4.F5.T

The range of a projectile is the vertical height reached; True or False?

Answers

Answer:

False

Explanation:

The range of a projectile is the horizontal height reached

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