How much power is needed to do 700 Joules of work in 100
seconds?

Answer:

friction

Explanation:

when 2 plates rub againts each other it makes friction same as in the earth. EXAMPLE just like how you rub your hands together

Answer:

Friction

Explanation:

Answer:  The force a spring exerts is a restoring force, it acts to restore the spring to its equilibrium length.

Explanation:

The spring's force acts to return the spring to its equilibrium length; it is a restoring force.

In the body, force is the result of either a push or a pull. The three main categories of forces are friction, nuclear, and gravitational. For instance, when a hand strikes a wall, the hand puts force on the wall and the wall also exerts a force on the hand. Newton was given a variety of laws to help him understand force.

Newton is a unit of force used by physicists that is part of the International System (SI).

Because the force applied by the spring is always in the opposite direction of the displacement, this force is known as a restoring force. The equation for Hooke's law contains a negative sign because of this. When a spring is pulled downward, it is stretched downward and produces an upward force.

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Answer:

D

Explanation:

For this kind of problem, forces add. F = F1 + F2

F1 = 6 N

F2 = 10 N

F = 6N + 10N

F = 16N

Answer:

the maximum height reached by the marble is 11.84 m.

Explanation:

Given;

mass of the marble, m = 0.02 kg

extension of the string, x = 0.08 m

force applied to the string, F = 58 N

Apply the principle of conservation of energy;

elastic potential energy = gravitational potential energy

¹/₂fx = mgh

[tex]h = \frac{Fx}{2mg} \\\\h = \frac{58 \ \times \ 0.08}{2 \ \times \ 0.02 \ \times \ 9.8} \\\\h = 11.84 \ m[/tex]

Therefore, the maximum height reached by the marble is 11.84 m.

Answer:

3.185×10^-29 kgm/s

Explanation:

Momentum(p)=mass×velocity

=9.1×10^-31×3.5×10

=3.185×10^-29 kgm/s

Answer:

4 J

Explanation:

As I guess,

From the equation,

work done = force × distance travelled

                   =  2        ×    2

                   = 4 J

There are no conversions since all are given in the standard form.

Ethanol and biodoesel are also cleaner-burning fuels than pure gasoline and diesel fuel.

I hope I helped! :)

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

Answer:

I. Potencia mecánica = 20000 Watts.

II. Potencia mecánica = 26 caballos de fuerza.

Explanation:

Dados los siguientes datos;

Trabajo realizado = 60000 julios

Tiempo = 3 segundos

Para encontrar el poder;

I. En vatios:

Potencia mecánica = trabajo realizado / tiempo

Potencia mecánica = 60000/3

Potencia mecánica = 20000 Watts

II. En caballos de fuerza;

1 vatio = 0.0013 caballos de fuerza

20000 Watts = 20000 * 0.0013 = 26 caballos de fuerza.

Potencia mecánica = 26 caballos de fuerza.

Una grua que efectua un trabajo de 60000 J en 3 s, tiene una potencia mecánica de 20000 W o 27 HP.

Una grua efectua un trabajo (W) de 60000 Joule en 3 segundos (t).

La Potencia mecánica (P) se define como la cantidad de trabajo realizado por unidad de tiempo.

[tex]P = \frac{W}{t} = \frac{60000J}{3s} = 20000W[/tex]

Podemos convertir 20000 W a caballos de fuerza usando el factor de conversión 1 HP = 735.5 W.

[tex]20000W \times \frac{1HP}{735.5W} = 27 HP[/tex]

Una grua que efectua un trabajo de 60000 J en 3 s, tiene una potencia mecánica de 20000 W o 27 HP.

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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

Answer:

Explanation:

Pyramids were built for religious purposes. The Egyptians were one of the first civilizations to believe in an afterlife. They believed that a second self called the ka lived within every human being. When the physical body expired, the ka enjoyed eternal life

Answer:

CO

Explanation:

Cobalt is a chemical element with symbol Co and atomic number 27

Aswer:

To find the resistance of a circuit, Ohm's law is used:

[tex]\boxed{\mathbf{R= V \ / \ i }}[/tex]

Taking as data:

Volts(v) = 36

Current(I) = 9 amps

Resistance(r) = ¿?

We replace according to the formula:

v/i = r

[tex]\mathbf{{36 \ / \ 9 = 4}}[/tex]

Result: The resistance of the circuit is 4 Ohms.

Removing an electron from a neutral atom will result in an atom that is positive.

Answer:

give me brainllest if this is right.

Explanation:

No, the atom will get a positive charge.

Answer:

yes I help what is the question

Answer:

RT=R1+R2+R3

Explanation:

Answer:

Frequency = 3 Hz

Explanation:

Frequency is a measure of Hertz. Recall that Hertz is the unit expressing cycles/second, where one second is the denominator of the fraction for simplicity. If there are 12 waves every four seconds, and one wave represents one cycle, dividing 12 waves by 4 seconds will give the answer of 3 waves (or cycles) per one second.

The frequency of these waves is 3 Hz. The correct option is D.

Frequency is the number of cycles or oscillations of a wave that occur in one second, measured in Hertz (Hz). It is a fundamental property of waves and is directly related to the energy and wavelength of the wave. The higher the frequency of a wave, the more energy it carries and the shorter its wavelength.

The formula for frequency (f) is:

f = 1 / T

where f is the frequency in Hertz (Hz) and T is the period of the wave in seconds (s). The period is the time it takes for one complete cycle or oscillation of the wave to occur.

Here in the Question,

The frequency of the waves can be calculated using the formula:

frequency = number of waves/time

In this case, the number of waves is 12 and the time is 4 seconds. Substituting these values into the formula, we get:

frequency = 12 waves / 4 seconds = 3 Hz

Therefore, the frequency of these waves is 3 Hz.

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Answer:

C 70 Joules because all of the energy of converted to potential energy.

Explanation:

the second diagram depicts the phenomenon which is refraction and this stems from light moving from a medium to another......and in this case light moves from a less dense medium to a denser medium hence is refracted away from the normal(the straight line between the medium of air and glass)

PLS GIVE BRAINLY

Diagram B shows the refraction event and this is from light to medium, in this case, the light travels from a slightly narrower area to a compact area and is, therefore, further away from the normal (vertical line between the air and glass).

When a ray of light travels from a dense area to a rare place, it bends away from normal.

Refractive index is also equal to the velocity of light c of a given wavelength in empty space divided by its velocity v in a substance, or n = c/v.

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Mass of cyclist = 100 kg

Mass of gorilla = 50 kg

Initial speed = 4.5 m/s

Let Final speed = s

100 x 4.5 = (100 + 50) x s

450 = 150s

S = 450/150

S = 3

The new speed is 3m/s

Answer:

the direction of the velocity is downward and the acceleration decreases throughout the motion

Explanation:

since the gradient is negative it is decelerating

Answer:

First answer.

Explanation:

There may be a 5N force, but if the frictional force also equals 5N, than they cancel eachother out, resulting in the brick still staying still, as it is resting on a (perfectly) level surface, but any amount of force would make the brick move.

Answer:

The Object Is Not Accelerating.

Explanation: Just Got It Correct