What acceleration will you give to a 24.5 kg
box if you push it with a force of 78.3 N?
Answer in units of m/s2.

Answer:

Explanation:

The potential energy of a body can be found by using the formula

PE = mgh

where

m is the mass

h is the height

g is the acceleration due to gravity which is 10 m/s²

From the question we have

PE = 150 × 10 × 10

We have the final answer as

Hope this helps you

Answer:

14,700

Explanation:

Answer:

I think the answer is tempurature

Explanation:

Answer:

I think it's current.

It cannot be Temperament because temp's S.I unit is Kelvins

The convection occurs in the troposphere because warm air rises and cool air sinks.

The continuous movement of the liquid from bottom to the top and from the top back to the bottom is known as convection current.

Convection happens because warm air is less dense than the cold air around it, so it is lighter and rises or goes up in the atmosphere while the cold air sinks.

Thus, the convection occurs in the troposphere because warm air rises and cool air sinks.

Learn more about convection current here: https://brainly.com/question/20295382

B. Warm air rises and cool air sinks.

Answer:

true

Explanation:

When shooting a free throw you can only receive 1 point for the team

Explanation:

R = V/I

Since this is an I/V graph, the greater the slope of the line the lower the R value.

Hence we find the line with the smallest slope, which is conductor M.

Answer:

  μk ≈ 0.414

Explanation:

The normal force at the box/floor interface is the sum of the weight and the vertical component of the applied force:

  normal force = 215 N + (135 N)sin(30°) = 282.5 N

The tangential force is the horizontal component of the applied force:

  tangential force = (135 N)cos(30°) ≈ 116.91 N

Then the coefficient of friction is ...

  μk = (tangential force)/(normal force) = (116.91 N)/(282.5 N)

  μk ≈ 0.414

Answer:

The final velocity of her partner is approximately -1.04 m/s or 1.04 m/s in the opposite direction to her direction of motion

Explanation:

The given parameters are;

The mass of the man, m₁ = 65 kg

The mass of the woman, m₂ = 45 kg

Taking the relative initial velocity of the man and the woman as 0 m/s, we have;

The initial velocity of the man, v₁₁ = 0 m/s

The initial velocity of the man, v₁₂ = 0 m/s

The final velocity of the woman, v₂₂ = 1.5 m/s

The final velocity of the man = v₂₁

Therefore, we have, by the conservation of momentum principle;

The total initial momentum = The total final momentum

Which gives;

m₁ × v₁₁ + m₂ × v₁₂ = m₁ × v₂₁ + m₂ × v₂₂

Substituting the known values;

65 × 0 + 45 × 0 = 65 × v₂₁ + 45 × 1.5

∴ 65 × v₂₁ + 45 × 1.5 = 0

45 × 1.5 = - 65 × v₂₁

v₂₁ = 45 × 1.5/(-65) ≈ -1.04 m/s

The final velocity of the man, her partner = v₂₁ ≈ -1.04 m/s.

Answer:

Density can be decreased by increasing the volume and keeping the mass same .

Answer:  12 Hertz

==========================================

Work Shown:

Frequency = (velocity)/(wave length)

Frequency = (600 m/s)/(50 m)

Frequency = (600/50) s^(-1)

Frequency = 12 Hertz

Note: 1 Hertz (abbreviated Hz) is one cycle per second. One way we can define what the cycle is, is to measure from one peak of the wave to the next neighboring peak. This is what the wavelength is. So saying "12 Hz" is basically saying "12 wavelengths per second".

Answer:

  table and graph are attached

Explanation:

a) The velocity of the ball will be ...

  v(t) = v0 -at

  v(t) = 19.6 -9.8t

The position of the ball will be the integral of this:

  h(t) = ∫v(t)·dt = 19.6t -(1/2)(9.8t^2)

The attached table calculates the vertical position in meters for the required times.

__

b) Graphs of displacement (h(t)) and velocity (h'(t)) are shown in the attachment.

Answer:

An open umbrella would not hit the ground before the closed one.   Explanation: The closed umbrella would hit first because it doesn't have as much air pressure hitting it. The open one has air pushing against it making it to where the open umbrella floats but falls slowly.    

An open umbrella will hit the ground after a closed umbrella because it has

a larger surface area and more air pressure and resistance.

An open umbrella has more surface araea which means more air particles

interacting with it. This slows it down and is the reason it hits the ground

after the closed umbrella.

Closed umbrella on the other hand have a smaller surface area and less air

resistance which is why it hits the ground faster.

Read more on https://brainly.com/question/24882838

Answer: thermal energy

Explanation:

Answer:

I think it's letter b.

correct me if my answer is wrong.

Initial velocity = [tex]V_0 = 50\frac{m}{s}[/tex]

Height = H = 100 m

Acceleration due to gravity = g = 10 m/s^2

Time of flight = ?

Angle of projection= θ(theta) = ?

Range attained = ?

A) The Relation between Height and Total time of flight is given by,

                                              [tex]T = 2(\sqrt\frac{2H}{g})\\\\T = 2( \sqrt\frac{2x100}{10})\\\\T = 2(\sqrt\frac{200}{10})\\\\T = 2(4.47)\\\\T = 8.94 seconds[/tex]

B) Total time of flight is given by,

                                             [tex]H = \frac{V_0^2Sin^2(theta)}{2g}\\\\100 x2x10 = 50^2Sin^2(theta)\\\\2000 = 2500Sin^2(theta)\\\\\frac{2000}{2500} = Sin^2(theta)\\\\Sin^2(theta)= \frac{4}{5}\\\\[/tex]

Square root on both sides,

                                            [tex]Sin(theta) = \frac{2}{\sqrt{5}}\\\\theta = Sin^{-1}(\frac{2}{\sqrt{5} })\\\\theta = 63.4 degrees[/tex]  

C) The range attained is given by,

                                           [tex]R = \frac{V_0^2}{g} xSin2(theta)\\\\R = \frac{50^2}{10} x Sin(2x63.4)\\\\R = 250 x 0.8\\\\R = 200meters[/tex]          

Answer:

Amplitude = 5 cm

Wavelength = 30 m

Explanation:

Amplitude is the maximum displacement. According to the graph, the maximum height is the maximum displacement which is equal to 5cm.

Wavelength is the same distance between two successive Crest or trough.

From the graph the wavelength is 30 metres.

That is,

Amplitude = 5 cm

Wavelength = 30 m

Answer:

Angle of refraction is 23° .

Explanation:

[tex] \frac{ \sin(0w) }{ \sin(0a) } = \frac{n \: a}{n \: w} [/tex]

[tex] \frac{ \sin(30) }{ \sin \: 0a } = \frac{1.3}{1.0} [/tex]

[tex] \sin \: 0w \: = \: \frac{ \sin(30) }{1.3} [/tex]

[tex] = 0.3846153846[/tex]

[tex] \sin^{ - 1} (0.3846153846[/tex]

[tex]0w \: = \: 23 ^{o} [/tex]

Answer:

the fundamental resonant frequency is 95.76 Hz

Explanation:

The computation of the fundamental resonant frequency be is given below:

= 1.34 m - 0.442 m

= 0.898 m

Now

[tex]L = \frac{\lambda}{4} \\\\\lambda = 4L[/tex]

Now the fundamental resonant frequency is

[tex]f = \frac{V}{\lambda} \\\\= \frac{V}{4L}\\\\= \frac{344}{4\times 0.898}[/tex]

= 95.76 Hz

hence, the fundamental resonant frequency is 95.76 Hz

Answer:

3 i)  The minimum frequency of sound which is heard by the human ear is 20 Hz

The maximum frequency of sound which is heard by the human ear is 20 kHz

ii) The wavelength, λ, of the shortest wave audible to human hear is 16.6 mm

The wavelength, λ, of the longest wave audible to human hear is 16.6 m

Explanation:

The given parameters are;

The velocity of sound, v = 332 m/s

The frequency, f, of sound is given by the following formula;

v = f × λ

Where;

λ = The wavelength of sound

i)  The frequency of sound audible to human hearing are from 20 Hz to 20 kHz, therefore;

The minimum frequency of sound which is heard by the human ear = 20 Hz

The maximum frequency of sound which is heard by the human ear = 20 kHz

ii) The wavelength, λ, of the shortest wave audible to human hear = The wavelength of the highest frequency audible to human hear = v/f = (332 m/s)/(20,000 Hz) = 0.0166 m = 16.6 mm

The wavelength, λ, of the longest wave audible to human hear = The wavelength of the shortest frequency audible to human hear = v/f = (332 m/s)/(20 Hz) = 0.0166 m = 16.6 m.

By the Newtons Second Law:

F = ma

F = (47 kg)(15 m/s²)

Answer:

If two magnetic south poles or two magnetic north poles are brought near each other, the magnetic force is repulsive and the magnets will push against each other in opposite directions. If opposite poles are brought near, it is attractive. But the fundamental origin of the magnetic field is moving charge.

Answer:

The various kinds of forces that exist in the items below are:

Spring = Spring Force

Magnet = Magnetic Force

Electric Scale = Electric Force

Newton Metre = Spring Force

Explanation:

Spring Force:

When you fix an object unto or upon a spring, the resulting compression or stretching exerted by that object on the spring is called the Spring Force. Conversely, the object is acted upon by the force that brings back the object to its state of equilibrium of rest.

Magnetic Force:

The motion between electrically charged particles always results in magnetic force. This is the primary force that is active in electric motors and normal magnets.

Electric Force

In order to create an electric force, you'd need to charge two particles and bring them in proximity to one another. Usually, they'll either repel or attract one another. This attraction or repulsion is known as an electric force.

Cheers

Answer:

This is due to the stronger bond that forms between carbon and oxygen, which is greater than the bond between hydrogen and oxygen.

Explanation:

Answer:

hope it helps and brainliest if helped........

To play tug of war, we need much force to pull the rope and to make the opposite team run to your side. The dog might applied more force to get the rop and he fell down in his direction where the man will pulled down to the opposite direction.

Force is an external agent acting on a body to change it from the state of motion or rest. In physics force is the product of mass and acceleration. Thus force exerted by a body depends on is mass.

There are various kinds of forces such as gravitational force, frictional force, magnetic force etc. The magnitude of net force acting on a body depends on all the forces;s magnitude and direction.

To win tug of war game, force must be greater in our direction. When two opposing forces are equal in magnitudes, there will be no displacement for the rope or neither group wins.

Thus when the force from the direction of dog dominates in magnitude it will win and we will be pulled into its direction.

To find more on force, refer here:

https://brainly.com/question/13191643

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Answer:

Green light is not absorbed but reflected, making the plant appear green. Chlorophyll is found in the chloroplasts of plants. There are various types of chlorophyll structures, but plants contain chlorophyll a and b. These two types of chlorophyll differ only slightly, in the composition of a single side chain.

Explanation:

Hope that helps.

Answer:

a = 2 m/s2

Explanation:

DATA

GIVEN:

m = 50 kg

f = 100 N

REQUIRED:

a = ?

FORMULA:

newtons second law states

F = ma

a = f/ m

SOLUTION:

a = 100 / 50

a =  2 m/s2

ANSWER:

a = 2 m/s 2

Answer:

2 m/[tex]s^{2}[/tex]

Explanation:

You can get the acceleration of an object if you know the formula for "Force."

The formula for Force is:

F = Force

m = mass

a = acceleration

Now that you know the formula for force, you can get the formula for acceleration.

1 N = 1 kg.m/[tex]s^{2}[/tex]

Therefore, the acceleration produced is 2 m/[tex]s^{2}[/tex].

Explanation:

The car still retains its mass because the matter is still there. The particles that make up the car are still present. The car also has inertia since inertia is effectively a measure of mass. We can rule out choices A and B because of these reasons.

The car wouldn't have weight in space because the pull of gravity isn't as strong. The pull of gravity is still there, but it's much more miniscule which produces the weightlessness of the object. Recall that the force of gravity reduces as the distance between the objects increases.

Hello!!

For this, use the formula:

[tex]\boxed{I=V/R}[/tex]

[tex]\textbf{Being:}[/tex]

[tex]\sqrt{}[/tex] [tex]I = Current = ?[/tex]

[tex]\sqrt{}[/tex] [tex]V = Voltage = 160 \ V[/tex]

[tex]\sqrt{}[/tex] [tex]R = Resistance = 10\ \varOmega[/tex]

[tex]\textbf{If we replace and resolve it}[/tex]

[tex]I = 160\ V / 10\ \varOmega[/tex]

[tex]I = 16\ A[/tex]

[tex]\text{The current of that circuit is \textbf{16 Amperes}}[/tex]

Answer:

To know the time ,length area

Answer:

newton's inertia law

something goes one way while the other goes the opposite direction.