a = 40
B= 75
m = 50 kg
kt=0.3
------------
To which mass of m2 will mass ml go down the hill? What will be the
acceleration of m2 (a)?

On which interval of masses m2 will the system rest/not move?

On which mass m2 will the system go backwards (ml up the hill) What
will be the acceleration of ml (a)?

Solve with II. Newton's law.​

Answer:

GPE = 1.47 Joules.

Explanation:

Given the following data;

Mass = 1kg

Height = 0.15m

We know that acceleration due to gravity is equal to 9.8m/s²

To find the gravitational potential energy;

Gravitational potential energy (GPE) is an energy possessed by an object or body due to its position above the earth.

Mathematically, gravitational potential energy is given by the formula;

[tex] G.P.E = mgh[/tex]

Where;

G.P.E represents potential energy measured in Joules.

m represents the mass of an object.

g represents acceleration due to gravity measured in meters per seconds square.

h represents the height measured in meters.

Substituting into the formula, we have;

GPE = 1*9.8*0.15

GPE = 1.47 Joules.

Answer: The first one is A and C

Explanation:

Answer:

2 is A

3 is C

Explanation:

The reason why two is a is think of it like this. atoms have to be combined together to make a molecule. So in other words you need letters to create a word.

3 is c because in a recipe you have to have the right proportions. Just like you have to have the right proportions of atoms to create a molecule.

Answer:

Explanation:

Pooh Shiesty, that's my dawg

But Pooh, you know I'm really shiesty

You told all them O.T. ni  ggas that you really slide

Tell the truth about your gang, they really dyin'

I got my own fire, don't need security in the club

All that woofin' on the net , I thought you was a thug

They ain't got nowhere to go, I sh0t up everywhere they was

Yeah, you know who took that - from you

Come get it back in blood

Come get it back in blood

Answer:

A plane's engines are designed to move it forward at high speed. That makes air flow rapidly over the wings, which throw the air down toward the ground, generating an upward force called lift that overcomes the plane's weight and holds it in the sky. The wings force the air downward and that pushes the plane upward.

Explanation:

planes stay in air because of 2 reasons :

Plane's wings are designed to push the air downwards and letting the plane to lift off and stay in air..

Answer:

a

Explanation:

time=540×60

=32400

f=1÷t

=1÷32400

f=3.09

f=3

The frequency is 3 Hz.

To calculate the frequency of the pendulum, the values given are

t = 540 minute

       The frequency of the simple pendulum can be described through the pendulum moves and come back to its own position for the specific period of the time. Also the pendulum frequency depends upon its length and mass.

Thus, frequency formula can be,

                        ω = √g/l

                       T = 2π / ω

        Frequency, f = 1 / T = ω / 2π

As we have to find the frequency, the time period will be reciprocal.

                        f = 1/ T Hz.

t = 540 per minute

 = 540 × 60 seconds

 = 32400 seconds

f = 1 / 32400

 = 3.08 × 10 ⁻⁶

f = 3 Hz

The frequency thus calculated as 3Hz.

Hence, Option A is the correct answer.

Learn more about the simple pendulum frequency,

https://brainly.com/question/12495919

#SPJ2

Answer:

308,000 or 30.8×10^3

Explanation:

v=f×lamda

v is ?, f is 875Hz, lamda is 352m

v=875×352

v=308,000

v=30.8×10^3 m/s

Answer:

Daniel Bernoulli

Explanation:

Hope this helps! :)

Answer:

Daniel Bernoulli is the person who discovered that fast-moving fluids produce less pressure and slow-moving fluids produce greater pressure.

Answer:

A vector in physics is a quantity that has both magnitude and direction.

Answer:

a line that usually veers and can be the result of force. Examples of Vector in a sentence. Military aviators study the vector between their aircraft and the enemy in order to calculate how to intercept.

Explanation:

Answer:

The deceleration is -7.85x10³ rad/s².

Explanation:

The angular speed (ω) is related to frequency (f) as follows:

[tex] \omega = 2\pi f [/tex]

When the frequency is 30 Hz the angular speed is:

[tex] \omega_{i} = 2\pi f = 2\pi*30 Hz = 188.5 rad/s [/tex]

Now, when the frequency is 20 Hz the angular speed is:

[tex] \omega_{f} = 2\pi*20 Hz = 125.7 rad/s [/tex]

Finally, the angular acceleration (α) can be found using the following equation:

[tex] \omega_{f}^{2} = \omega_{i}^{2} + 2\theta \alpha [/tex]

Where:

θ: is the angular displacement = 72°

[tex] \alpha = \frac{\omega_{f}^{2} - \omega_{i}^{2}}{2\theta} [/tex]

[tex] \alpha = \frac{(125.7 rad/s)^{2} - (188.5 rad/s)^{2}}{2*72*\frac{2\pi rad}{360}} = -7.85 \cdot 10^{3} rad/s^{2} [/tex]        

Therefore, the deceleration is -7.85x10³ rad/s².

I hope it helps you!                  

Answer:

Look below.

Explanation:

All the symptoms provided points to the common problem of dehydration. Especially a physically active person because they are constantly sweating which leads to the loss of bodily fluids and dehydration.

Answer:

Trains stop in their own time.

Every freight train, every situation, every load is different. The distance it takes to halt a train in an emergency is based on multiple factors: the speed when the brakes are applied, the track's incline, the number of cars hooked behind the locomotives and the loading of those cars, the "brake delay" inherent in the train's hydraulic system, the friction-causing metallurgy of the wheels and tracks, the weather.

Even the engineer behind the controls can't know on any given day how long it would take to stop the train.

"There is no specific rule of thumb on that," said Greg Udolph, general manager of the Texas State Railroad, a freight and tourist line in East Texas running from Palestine to Rusk. "If the track is wet with dew it changes. Everything that can affect it does. A train takes as long to stop as it takes to stop. Sometimes it can be a mile. Sometimes it's less, sometime's it's more."

Explanation:

Hope this helps :)

Answer:

6kgm/s

Explanation:

Let the rate of gravity be the momentum of the body

Momentum = mass * velocity

Given

Mass = 2kg

velocity = 3m/s

Momentum = 2 * 3

Momentum = 6kgm/s

Hence the rate at which the gravity is working is 6kgm/s

Answer:

Answer is efficiency = 50%

Answer:

Force = 150 Newton.

Explanation:

Given the following data;

Mass = 60kg

Acceleration = 2.5m/s²

To find the force;

Force = mass * acceleration

Force = 60 * 2.5

Force = 150 Newton.

Therefore, the force required to accelerate this mass is 150 Newton.

Answer:

frequency is .167/s for this wave

Answer:

wave speed=frequency×wave length

frequency=15/2.5

=6

i hope this helps

Answer:

22.5/s is the frequency of the wave

Given:

We know,

→ [tex]Frequency (f) = \frac{C}{\lambda}[/tex]

By substituting the values,

                         [tex]= \frac{450}{20}[/tex]

                         [tex]= 22.5 \ Hz[/tex]

Thus the approach above is right.

Learn more about frequency here:

https://brainly.com/question/25601011

Answer:

B

Explanation:

Remark

If, when it reaches its maximum height where the PE is the greatest, that the maximum energy is when the ball is first kicked. That would mean its starting energy is 10 Joules.

Formula

KE = 1/2 m v^2

Givens

KE = 10 J

m = 0.2 kg

v = ?

Solution

10 = 1/2 * 0.2 * v^2

10 * 2 = 0.2 * v^2

20 = 0.2 * v^2

20/0.2 = v^2

100 = v^2

v = 10 m/s

Answer:

304 K

Explanation:

Answer:

The stone is accelerating at 9.8 m/s².  If we multiply that by three seconds, we get 29.4 m/s.

Answer:

Refer to the attachment..

The current across the circuit is equal to 0.833A  if a voltage source of 5 V is connected at the input.

Ohm’s law states that the potential difference across a circuit is directly proportional to the current flowing through it. Assuming temperature and all other physical conditions remain constant. Resistance's S.I. unit is rho (Ω), and the current raises the temperature.

The mathematical expression of potential difference provided by Ohm/s law is:

V = IR

Where V is the voltage difference and R is the resistance and I the current flowing.

Given, the resistances in a series circuit, R = 3 + 3 = 6 ohm

The voltage difference across the circuit, V = 5 V

The current flowing through the circuit will be:

V = I × R

I = V/R

I = 5/6

I = 0.833 A

Therefore, the current across the circuit is equal to 0.833 A.

Learn more about Ohm's law, here:

brainly.com/question/14796314

#SPJ5

Answer:

Average acceleration = 0.45 m/s²

Explanation:

Given the following data;

Initial velocity, u = 0m/s

Final velocity, v = 8.6 m/s

Time, t= 19 seconds

To find the average acceleration;

In physics, acceleration can be defined as the rate of change of the velocity of an object with respect to time.

This simply means that, acceleration is given by the subtraction of final speed from the initial speed all over time.

Mathematically, acceleration is given by the formula;

[tex]Acceleration = \frac{initial speed - final speed}{time}[/tex]

Substituting into the formula, we have;

Acceleration = (8.6 - 0)/19

Acceleration = 8.6/19

Average acceleration = 0.45 m/s²

Answer:

the height of the hill is 8.622 m.

Explanation:

Given;

mass of the cart, m = 90 kg

speed of the cart at the base, v = 13 m/s

Let the height of the hill = h

Apply the principle of conservation of energy, to determine the height of the hill.

¹/₂mv² = mgh

¹/₂v² = gh

[tex]h= \frac{1}{2} \times \frac{v^2}{g} \\\\h = \frac{1}{2} \times \frac{13^2}{9.8} \\\\h = 8.622 \ m[/tex]

Therefore, the height of the hill is 8.622 m.

Wave Speed (M/s) = Frequency (Hz) x Wavelength (M)

Wave Speed = 3500Hz x 2.8M = 9800M/s

Answer = Top one

Answer:

A

Explanation:

3500Hz*2.5m=9800m/s

Give Brillienst please!!!!

Answer:

Explanation:

Remark

This is a conservation problem.

The momentum before impact = momentum after impact

momentum before

m = 0.04 kg

v = 300 m/s

momentum after

m = 0.5 kg + 0.04kg    That's the mass of the block and bullet

v = ?

Solution

0.04 * 300 = 0.54 * x

12 kg m/s   = 0.54 kg * x

12 / 0.54 = x

x = 22.22 m/s

Answer:

Higher Amplitude = Higher Energy.

Explanation:

As you could see the higher number the amplitude is the energy also gets higher!