Which has a greater kinetic energy, a truck, or a train.

Answers

Answer 1

Answer:

a train

Explanation:

the train is longer the longer something is the more power it will have


Related Questions

One interesting fact bout golf

Answers

Answer:

you hit a golf ball to the moon

Explanation:

Answer:

You hit the ball and it flies

Explanation:

You hit the ball and it flies

help me pls its for my science class i need to show my work

Answers

Answer:

P = 5880  J

Explanation:

Given that,

The mass of the block, m = 30 kg

The block is sitting at a height of 20 m.

The block will have gravitational potential energy. The formula for gravitational potential energy is given by :

[tex]P=mgh\\\\=30\times 9.8\times 20\\\\=5880\ J[/tex]

So, the required potential energy is equal to 5880  J.

An astronaut weighs 200 N on the Moon where gravity is 1.62 m/s/s. Find his weight on Earth. HELP PLEASE FAST

Answers

Answer:

the weight of the astronaut on Earth is 1209.88 N

Explanation:

Given;

weight of the astronaut, W = 200 N

acceleration due to gravity on moon, g = 1.62 m/s²

Apply Newton's second law of motion to determine the mass of the astronaut;

F = ma = mg

m = F/g

m = 200 / 1.62

m = 123.457 kg

The weight of the astronaut on Earth is calculated as follows;

F = mg

where;

g is acceleration due to gravity on Earth = 9.8 m/s²

F = 123.457 x 9.8

F = 1209.88 N

Therefore, the weight of the astronaut on Earth is 1209.88 N

A 650 × 10–4 F capacitor stores 24 × 10–3 of charge. What is the potential difference between the plates?

Answers

Answer:

0.369 V

Explanation:

Given :

Capacitance ( c ) = 650 × 10–4 F

Charge ( q ) = 24 × 10–3 C

We are asked to find potential difference ( v )!

We know:

q = c v

= > v = q / c

Putting values here we get:

= > v = ( 24 × 10–3 ) / ( 650 × 10–4 ) V

= > v = 240 / 650 V

= > v = 24 / 65 V

= > v = 0.369 V

Therefore, potential difference between the plates is 0.369 V

Do white holes exist in space?​

Answers

Answer:

White holes do not exist in space

Explanation:

Any outgoing matter would collide with the matter in orbit, and the system would collapse into a black hole

Have a good day :)

The first one on gets brainilest

Answers

Answer:

thanks

Explanation:

Dang, a+ for effort I guess lol

Una persona puede oír sonidos cuyas longitudes de onda están comprendidas entre 17 m y 0,017 m. Si se considera que la velocidad del sonido es de 340 m/s, las frecuencias de los sonidos que oye, se encuentran entre:

Answers

If you put it in English I’ll answer it for you

What is an atom called after it was proven wrong

Answers

Answer:

An atom is the smallest unit of ordinary matter that forms a chemical element.

Matter is composed of very tiny or microscopic particles called "Atom".

(According to Dalton atomic theory some of his principles were wrong and later was corrected but the definition of an atom was right in his theory).

Two parallel plates of area 7.34 x 10^-4 m^2 have 5.83 x 10^-8 C of charge placed on them. A 6.62 x 10^-6 C charge q1 is placed between the plates. What is the magnitude of the electric force on q1? Hint: How is force related to the field? (Unit = N)

Answers

Answer:

* if the two plates have the same charge sign       F_net = 0

*if one plate is positive and the other is negative   F_net = 59.4 N

Explanation:

The electric field created by a parallel plate is

           E = [tex]\frac { \sigma }{2 \epsilon_o }[/tex]

where sigma is the charge density

          σ = Q / A

we substitute

           E = [tex]\frac{Q}{A \ 2 \epsilon_o }[/tex]

           E = [tex]\frac{ 5.83 \ 10^{-8} }{7.34 \ 10^{-4}\ 2 \ 8.5 \ 10^{-12} }[/tex]

           E = 4.487 10⁶ N / C

the electric force is

          F = E / q

in this force it is a vector, so if the charges are of the same sign they repel and if they are of the opposite sign they attract. In this case, the test load is between the two plates that have the same load sign, so the forces are in the opposite direction.

* if the two plates have the same charge sign

          F_net = F₁ - F₂

          F_net = q (E₁ -E₂)

since the electric field does not depend on the distance

           E₁ = E₂

in consecuense  

           F_net = 0

In a more interesting case

*if one plate is positive and the other is negative

           F_net = F₁ + F₂

           F_net = q (E₁ + E₂) = 2 q E₁

           F_net = 2 6.62 10⁻⁶  4.487 10⁶

           F_net = 59.4 N

net force goes from positive to negative plate

Answer:

59.4 N

Explanation:

acellus

A young girl is on a swing that completes 35.0 cycles in 25 seconds. What are her frequency and period?

Answers

The first question has the answer to your problem! I found the answer key!

Which of the following statements is false?
A. An object can be in motion but have zero acceleration.
B. It is impossible to have negative speed.
C. It is impossible to have negative acceleration.
D. Displacement is the exact same thing as distance.

Answers

Answer:

c

Explanation:

it is impossible to have negative acceleration

The rate at which charge passes through a 6 Ω resistor at a given point in time is 3 mA. How much charge passes through this resistor in 5 seconds?

Answers

Answer:

Q = 0.015 Coulombs

Explanation:

Given the following data;

Resistance = 6 Ω

Current = 3 mA = 0.003 A

Time, t = 5 seconds

To find the quantity of charge passing through the resistor;

Mathematically, quantity of charge is given by the formula;

Quantity of charge, Q = current * time

Q = 0.003 * 5

Q = 0.015 Coulombs

what would you do to increase resistance

Answers

Answer:

If this is electrical currents , make the wire longer, smaller diameter wires, heat it up

Yes...... ........... because it’s reusable

If the gravitational force between a planet of mass M and a satellite of mass m at distance is 2.5 * 10 ^ 3 * N what is the force exerted on a larger satellite of mass 2m , at a distance 0.8r away from planet M ?

Answers

Answer:

F = 7.8  10³ N

Explanation:

For this exercise we will use the law of universal Gravitational

         F = G M m / r²

for initial conditions

        F₀ = G M m₀ / r₀²

         

      They tell us that the mass changed at m = 2m  distance at r = 0.8r₀

we substitute

      F = G M 2m₀ / (0.8 r₀) ²

      F = (GM m₀/ r₀²)   [tex]\frac{2}{0.64}[/tex]

      F = 3.125 F₀

     

let's calculate

      F = 3.125 2.5 10³

      F = 7.8125 10³ N

what do we get from the area between the speed-time graph of a body and the time axis?​

Answers

Explanation:

The area between the speed-time graph f a body and time axis measures the distance travelled by the body

What is the average kinetic energy (temperature) of
sample A

Answers

I think the answer is A

The moon Ariel orbits Uranus at a distance of 1.91 x 108 m once every 2.52 days. Use that data to calculate the mass of Uranus. [?] x 10kg​

Answers

Mu = 8.66 × 10^25 kg

Explanation:

centripetal force = gravitational force

[tex]m \frac{ {v}^{2} }{r} = (grav.const) \frac{m \times mu}{ {r}^{2} } [/tex]

where

m = mass of moon Ariel

mu = mass of Uranus

r = radius of Ariel's orbit

v = Ariel's velocity around Uranus

To find the velocity, we need to find the circumference of the no orbit and then divide it by the period (2.52 days):

circumference = 2πr = 2π×(1.91 × 10^8 m)

= 1.2 × 10^9 m

period = 2.52 days × (24 h/1 day)×(3600 s/1 hr)

= 2.18 × 10^5 s

v = (1.2 × 10^9 m)/(2.18 × 10^5 s)

= 5.5 × 10^3 m/s

(5.5 × 10^3 m/s)^2/(1.91 × 10^8 m) = (6.67 × 10^-11 m^3/kg-s^2)Mu/(1.91 × 10^8 m)^2

Solving Mu,

Mu = 8.66 × 10^25 kg

A spring stretches 2 meters when a 12 N force is acting on it. What is the spring constant (k)? 10 N/m 0.17 N/m 2 N/m 6 N/m

Answers

Answer:

Explanation:

Hooke's Law is linear; mathematically, it looks like this:

F = -kΔx where k is the spring constant. Filling in and solving for k:

12 = -k(-2) so

k = 6N/m

If a light ray hits a plane mirror at 20°. What is the angle of reflection?

Answers

Answer:

This question is vague because it doesn't specify whether 20° is the angle of incidence or the angle the ray makes with the surface

But If we consider 20° as the angle of Incidence...

The Angle of Reflection = 20° also

Because

From The Law of Reflection

Angle of Incidence = Angle of Reflection

Explanation:

We measure distances in astronomy in terms of AU which is the distance
between the earth and sun. If the distance is 2AU, it is twice that distance.
What happens to the time period (1 year) for planets when you double the
distance from the sun? (approximately)

Answers

Answer:

it took by 2 and made it 2 yrs

Explanation:

hello please help i’ll give brainliest pls

Answers

Answer:

The direction of the force! :)

Opposite poles attract (N-S) while similar poles (N-N or S-S) repel.

Answers

That’s True (N-S) attract and (N-N or S-S) repel

Write three things you already know about golf, three things you want to know, and three things you learned

Answers

Answer:

What I know, want to know, and have learned

Explanation:

I know

1. You have to have a golf ball

2. You have to have a golf club

3. Its nice to have a golf cart

Want to know:

1. Where can I play

2. How to play

3. Is it a common sport

Have learned:

1. Golf is hard

2. Top golf is a nice place to golf

3. The goal is to make the ball into the hole

what causes you to get warm if you stand bear a fire ? A . Transmission B . Radiation C . Convection D . Conduction​

Answers

Answer:

B

Explaination:

Radiation refers to the emission of energy in rays or waves. Heat moves through space as energy waves.

Answer:

Radiation

Explanation:

Heat can be transferred though thin air


A bowling ball rolled with a force of 20 N accelerates at a rate of 5 m/sec2, a second ball rolled with the same force accelerates 10 m/sec2. What are the
combined masses of the two balls?

Answers

Answer:

sorry I need points

Explanation:

IM SO SORRY

Ejercicio 5. En el año 1985 fue puesto en órbita el primer satélite de México, el Morelos 1. Dicho satélite orbitaba la Tierra a una altura de 35 800 km (35.8 x10^6 m).
a) Obtenga el radio de la órbita del satélite (r = R +h)
b) Calcule la velocidad del Morelos 1
c) Obtenga el periodo de rotación en horas
d) ¿Cuál es el valor de la intensidad del campo gravitacional en la órbita del Morelos 1?

Answers

Answer:

a) Obtenga el radio de la órbita del satélite (r = R +h)

Explanation:

A 75.0 Ohm resistor uses 0.285 W of power. What is the voltage across the resistor?

Answers

Answer:4.62

Explanation:

Acellus

An event in when a large percentage of all species become extinct is calle

A. biodiversity shift
B. evolutionary shift
C. mass extinction
D. background extinction

Answers

the answer is d. background extinction

Consider three point charges, q1 = 4.50 C, q2 = 4.50 C, and q3 = 6.30 C, located at the corners of an isosceles triangle. The charges q1 and q2 are 5.00 m apart and form the base. The triangle is 3.50 m high, and q3 is located at the top. Calculate the magnitude and direction of the resultant force on q3.

Answers

Answer:

See explanation below

Explanation:

In this case, let's draw the triangle so we can see how the resultant force would be.

In the picture below, you have the drawn, and the procedure to solve this.

Hope this helps

what is the total voltage of four resistors and 17 volts in a series connectionformula for calculating the total voltage of for resistors and 17 volts ​

Answers

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