A 3.00 kg crate is pulled along a frictionless surface with a force of 55.0 N at 25.00 to the
horizontal so that it accelerates directly to the right. What is the crate's acceleration?

Explanation:

Here is the answer,

Lets be BF

The density of solid is 3.842 g/cm³.

Density is the measurement of how tightly a material is packed together. It is defined as the mass per unit volume.

Density Symbol: D or ρ Density Formula: ρ = m/V, where ρ is the density, m is the mass of the object and V is the volume of the object.

Displaced Weight = 277.5 - 212.5

                              = 65 gm

Density = 0.9 g/cm³

Mass = 65 gm

Volume = Mass / Density

             = 65 / 0.9

             = 72.22 cm³

Now,

Density of Solid = 277.5 / 72.22

                          = 3.842 g/cm³.

Hence , The density of solid is 3.842 g/cm³.

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Answer:

Workdone = 1250Nm

Explanation:

Given the following data;

Force, F = 500N

Distance, d = 2.5m

Workdone is given by the formula;

[tex] Workdone = force * distance[/tex]

Substituting into the equation, we have

[tex] Workdone = 500 * 2.5 [/tex]  

Workdone = 1250Nm

Therefore, the actual work done by the worker is 1250 Newton-meter.

The actual work done by the worker is 1250 J.

Work can be defined as the product of force and distance. The s.i unit of work is Joules

The formula of work is

W = Fd....................... Equation 1

Where W = work done by the worker, F = Force, d = distance.

From the question,

Given: F = 500 N, d =  2.5 m

Substitute these values into equation 1

W = 500×2.5

W = 1250 J

Hence, the actual work done by the worker is 1250 J

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Answer:

E to F

Explanation:

The velocity decreases during segment E to F since the slope of the curve decreases with time.

We have 5 segments in the given graph between position and time. Analyzing each segment we can conclude the following:

Segment A to B: the position remains constant as time increases, this means that the velocity is zero.

Segment B to C: the rate of increase in the position slowly becomes greater as time passes, which means velocity is increasing and the object is accelerating

Segment C to D: The rate of increase in the position is constant with respect to the rate of increase in time, the slope of the curve is constant, which means that the velocity is constant.

Segment D to E: same as the segment A to B, the velocity is zero.

Segment E to F: The rate of increase in the position slowly decreases with time, and the slope of the curve decreases with time, which means the velocity is decreasing.

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Answer:

the magnet is not moving relative to the wire so B

Explanation:

The magnet is not moving relative to the wire if, A permanent magnet is placed in a coil of wire, If there is no electric current in the wire so, option B is correct.

Electric current is a term used to describe how much electricity flows across a circuit and how it flows in an electronic circuit. Amperes are used to measure it (A). The more electricity flowing across the circuit, the higher the ampere value.

When current flows through a coil of wire, it transforms into an electromagnet. The coil spins as a result of the electromagnet's interaction with a permanent magnet.

An electromagnet is created when current passes through a coil of wire. Because of the electromagnet's interaction with a permanent magnet, the coil spins.

Thus, The magnet is not moving relative to the wire.

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Answer:

C is the correct answer

Answer:

solar eclipse

Explanation:

because at that time, the moon completely covers the path and casts its shadow on earth because it is present between sun and earth's path. so, solar eclipse occurs.

hope it helps :)

Answer:solar eclipse

Explanation:

Top one is right <3

Explanation:

hope this will help u

Answer:

I'll take this one also

Answer:

As the temperature increases, the volume of the material also increases. This is known as thermal expansion. It can also be explained as the fractional change in the length or volume per unit change in the temperature.

The relation between alpha, beta, and gamma is given in the form of a ratio and the ratio is 1:2:3 and can be expressed as:

alpha=fracbeta2=fracgamma3

Following is the relation between the three:

L = L (1 + α.ΔT)

Where, α is the coefficient of linear expansion  

A = A (1 + β.ΔT)

Where, β is the coefficient of aerial expansion

V = V (1 + γ.ΔT)

Where, γ is the coefficient of cubical expansion  

V = V + γV.ΔT

V = V (1 + γ.ΔT)  

L3 = L3 (1 + α.ΔT)3

L3 = L3 (1 + 3α.ΔT + 3α2.ΔT2 + α3.ΔT3)

L3 = L3 (1 + 3α.ΔT)

Alpha, beta, and gamma are related to one another in the form of a ratio, and that ratio is 1:2:3, and yes they are universal constants.

A substance's volume expands while its mass stays constant. Heating is typically the cause of expansion. When a substance is heated, the molecular bonds separating its particles weaken, the particles move more quickly, and the substance expands as a result.

Determine the relation as shown below,

L = L (1 + α × Δ T)

here, α is the coefficient of linear expansion  

A = A (1 + β × Δ T)

here, β is the coefficient of aerial expansion

V = V (1 + γ × Δ T)

here, γ is the coefficient of cubical expansion  

V = V + γ × V × Δ T

V = V (1 + γ × ΔT)  

L3 = L3 (1 + α × Δ T)3

L3 = L3 (1 + 3α × ΔT + 3α2 × ΔT2 + α3 × ΔT3)

L3 = L3 (1 + 3α × Δ T)

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Bernoulli's Principle states that as the speed of a moving fluid increases, the pressure within the fluid decreases. The Bernoulli's Principle explains the behavior of an ideal fluid passing through a pipe or enclosed passageway such a pump.

The particles in the gas are farther apart from each other, therefore illustration (C) represents the arrangement of particles in a gas.

Matter exists in different forms in nature in which three common states are solid, liquid, and gaseous. Some substances have a definite shape and some can flow, and take the shape of their container like water, some forms of matter do not have certain shapes or sizes.

The particles in solids are highly closely packed so illustration (D) represents the particles in a solid state. The compact packing of solids means that the particles are very close to each other and do not show movement.

In liquids, the particles are some distance away from each other and they show some movements. The particles in a liquid have some kinetic energy.

In gases, the particles are farther from each other and thus their particles show large movement. The kinetic energy of particles in gases is the greatest in comparison to that of solids and liquids.

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Answer:

a large matters of body with no shape is mass

Răspuns:

1000 kg

Explicaţie:

Date date

t1 = 10 ° C

t2 = 293,15K = până la grad = 293,15-273 = 20,15 ° C

= 20 ° C    aproximativ

Q = 418kJ = 418000J

c = 4180J / kg ° C

m =? Kg

Necesar:

Masa m în kg

Pasul doi:

Formulă:

Q = c * m * Δt

Q = c * m * (t2 -t1)

m = Q / c * (t2-t1)

Calculati:

m = 418000/4180 * (20-10)

m = 100 * 10 kg

m = 1000 kg

Answer:

Average current produced by the repeated transfer of charge is 5.6 × 10⁻⁷ ampere

Explanation:

The formula to be used here is

Q = It

where Q is the quantity of electricity and it is measured coulombs (C); 2.8 × 10⁻⁸ C or 0.000000028 C

I is current and it is measured in ampere (amps or A); unknown

t is time and it is measured in seconds (s); 0.05 s

Since, average current is what is unknown

I =Q/t

I = 0.000000028/0.05

I = 5.6 × 10⁻⁷ A

Average current produced by the repeated transfer of charge is 5.6 × 10⁻⁷ ampere

Answer:

0.1m

Explanation:

Given parameters:

Frequency  = 12hz

Speed  = 1.2m/s

Unknown:

Wavelength of the wave  = ?

Solution:

The wavelength of the wave can be derived using the expression below;

      V  = f∧

V is the speed of the wave

f is the frequency of the wave

∧ is the wavelength

 So;

         ∧  = [tex]\frac{Velocity}{frequency}[/tex]

Now, insert the parameters and solve;

       ∧   = [tex]\frac{1.2}{12}[/tex]   = 0.1m

Answer:

b. a chair on a floor

Explanation:

All of the other objects are in motion, the jet is flying so it is not at rest, the rabbit is also moving, and a ball hit by a bat is also in motion

Answer:

C. Potential energy is related to an object's position, and kinetic

Explanation:

The energy contained in the small motions of the object's molecules can be broken up into a combination of microscopic kinetic energy and potential energy.

Answer:

c. potential energy is related to an object's position, and kinetic energy is related to its motion

Explanation:

Answer:

If im right the answer should be D

Heya!!

For calculate wavelength, lets applicate formula:

                                                      [tex]\boxed{\lambda = V/f}[/tex]

                                                   Δ   Being   Δ

                                             f = Frequency = 5 Hz

                                            v = Velocity = 25 m/s

                                             [tex]\lambda[/tex] = Wavelenght = ?

⇒ Let's replace according the formula:

[tex]\boxed{\lambda = 25\ m/s / 5\ Hz }[/tex]

⇒ Resolving

[tex]\boxed{\lambda = 5\ m}[/tex]

Result:

The wavelength is 5 meters.

Good Luck!!

The wavelength of the wave is 5 meters.

Given the following data:

To find the wavelength of the wave:

Mathematically, the wavelength of a waveform is calculated by using the formula;

[tex]Wavelength = \frac{Speed}{Frequency}[/tex]

Substituting the given parameters into the formula, we have;

[tex]Wavelength = \frac{25}{5}[/tex]

Wavelength = 5 meters.

Therefore, the wavelength of the wave is 5 meters.

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Answer:

A) refused to vote and left the convention.

Explanation:

At the first Democratic Party convention of 1860, fifty Southern delegates refused to vote and left the convention

Answer:

The answer is A

Explanation:

got it right edge 2021

Answer:

m = FpCos0 / a

Explanation:

it just is

A box of mass m is pulled at an angle θ by a force Fp along a frictionless surface. The box travels to the right with acceleration a

What is the mass m of the box?

Answer: m = FpCos0/a

Answer:

195 is it current pls tell

Answer:

A. Rock cycle

Explanation:

Because it really is the change of a rock from another, like ingenuous, sedimentary rock..

Given :

Reem took a wire of length 10 cm. Her friend Nain took a wire of 5 cm of the same material and thickness both of them connected with wires as shown in the circuit given in figure. The current flowing in both the circuits is the same.

To Find :

Will the heat produced in both the cases be equal.

Solution :

Heat released is given by :

H = i²Rt

Here, R is resistance and is given by :

[tex]R = \dfrac{\rho L}{A}[/tex]

So,

[tex]H = i^2\times \dfrac{\rho L}{A} t\\\\H = \dfrac{i^2\rho Lt}{A}[/tex]

Now, in the question every thing is constant except for the length of the wire and from above equation heat is directly proportional to the length of the wire.

So, heat produced by Reem's wire is more than Nain one.

Hence, this is the required solution.

Answer:

98N

Explanation:

Given parameters:

Mass of the bowling ball  = 10kg

Mass of the softball  = 1kg

Unknown:

Force of gravity on the bowling ball  = ?

Solution:

The force of gravity on an object is the same as the weight of the body;

 Weight  = m x g

m is the mass

g is the acceleration due to gravity  = 9.8m/s²

 Weight of bowling ball  = 10kg x 9.8m/s²  = 98N

Answer:

Explanation:

The acceleration of an object given it's mass and the force acting on it can be found by using the formula

[tex]a = \frac{f}{m} \\ [/tex]

f is the force

m is the mass

From the question we have

[tex]a = \frac{10}{5} \\ [/tex]

We have the final answer as

Hope this helps you

hope it helps!

Answer:

La aceleración del automovil antes de deternerse es -5.5 m/s².

Explanation:

Podemos encontar la aceleración del auto usando la siguiente ecuación:

[tex] v_{f} = v_{0} + at [/tex]

En donde:

[tex]v_{f}[/tex]: es la velocidad final = 0 (se detiene)

[tex]v_{f}[/tex]: es la velocidad inicial

a: es la aceleración=?

t: es el tiempo = 4.0 s

Primero debemos encontrar la velocidad inicial, para ellos usaremos la siguiente ecuación de moviemiento rectilíneo uniforme:

[tex] v_{0} = \frac{x}{t} = \frac{110 m}{5.0 s} = 22 m/s [/tex]

Ahora, la aceleración es:

[tex] a = \frac{v_{f} - v_{0}}{t} = \frac{0 - 22 m/s}{4.0 s} = -5.5 m/s^{2} [/tex]

El signo negativo se debe a que el auto está desacelerando.

Entonces, la aceleración del automovil antes de deternerse es -5.5 m/s².

Espero que te sea de utilidad!