how many atoms of 1 element different from atoms of other elements?

The forces exerted by the pillars when a 90.0 kg diver stands at the far end of a 5.00 m long diving board with a mass of 6.6 kg supported by two pillars, one at the left end of the diving board, and the other 1.50 m away are 512 N and 490 N. Here options B and D are correct.

The answer to the first question is B) Counterclockwise. This is because the force applied by the adult is not directly over the pivot point, so it creates a torque that causes the teeter-totter to rotate in the counterclockwise direction.

To answer the second question, we can use the principle of torque equilibrium, which states that the sum of the torques acting on an object must be zero for it to be in rotational equilibrium. In this case, we can consider the diving board and the diver as a system.

When the diver stands at the far end of the board, the board experiences a torque due to the weight of the diver, which is given by:

τ = F × d

where F is the weight of the diver, and d is the distance from the pivot point to the point where the weight acts. Since the weight of the diver is acting downwards, the torque is acting in the clockwise direction.

At the same time, the two pillars are exerting forces on the board to support its weight and the weight of the diver. Let's call the force exerted by the pillar at the left end of the board \(F_1\), and the force exerted by the pillar 1.50 m away \(F_2\). Since the board is in static equilibrium, the sum of the forces acting on it must be zero. This gives us:

\($F_1 + F_2 - F_g = 0$\)

where \(F_g\) is the weight of the board, including the weight of the diver We can solve for \(F_1\) and \(F_2\) by considering the torque equilibrium equation:

\($\tau_1 + \tau_2 - \tau_g = 0$\)

\($\tau_1 = F_1 \times 0 = 0$\)

\($\tau_2 = F_2 \times 1.50 \text{ m}$\)

Substituting these values and the torque due to the weight of the board and the diver into the torque equilibrium equation, we get:

\($F_2 \times 1.50 \text{ m} - (90.0 \text{ kg} + 6.6 \text{ kg}) \times 9.81 \text{ m/s}^2 \times 2.50 \text{ m} = 0$\)

Solving for F2, we get:

\($F_2 = \frac{(90.0 \text{ kg} + 6.6 \text{ kg}) \times 9.81 \text{ m/s}^2 \times 2.50 \text{ m}}{1.50 \text{ m}} = 512 \text{ N}$\)

Substituting this value of \(F_2\) into the equation for the sum of the forces, we get:

\($F_1 + 512 \text{ N} - (90.0 \text{ kg} + 6.6 \text{ kg}) \times 9.81 \text{ m/s}^2 = 0$\)

Solving for \(F_1\), we get:

\($F_1 = (90.0 \text{ kg} + 6.6 \text{ kg}) \times 9.81 \text{ m/s}^2 - 512 \text{ N} = 490 \text{ N}$\)

Therefore, the forces exerted by the pillars are 490 N and 512 N, which is option D) 512 N and 490 N.

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Complete question:

Which direction does a teeter-totter rotate when an adult applies a force of 95 N at a distance of 2m from the pivot?

A) Clockwise

B) Counterclockwise

C) It does not rotate

D) Cannot be determined

What are the forces exerted by the pillars when a 90.0 kg diver stands at the far end of a 5.00 m long diving board with a mass of 6.6 kg supported by two pillars, one at the left end of the diving board, and the other 1.50 m away?

A) 675 N and 327 N

B) 327 N and 675 N

C) 490 N and 512 N

D) 512 N and 490 N

Answer:

556

Explanation:

Answer:

the answer up top is correct

The current in each resistor is 4 A, 2 A, and 4 A, respectively. The voltage drop across each resistor is 12 V.

When three resistors are connected in series with a six resistor and a 12-volt battery, the total resistance of the series circuit is R = R1 + R2 + R3 + ...

The current flowing through the circuit is the same at every point. So, if we want to know the current flowing through each resistor, we need to use Ohm's law, I = V/R, where V is the voltage of the battery and R is the resistance of each resistor.

I1 = V/R1 = 12/3 = 4 AI2 = V/R2 = 12/6 = 2 AI3 = V/R3 = 12/3 = 4 A. The voltage drop across each resistor can be calculated using Ohm's law, V = IR.

V1 = I1R1 = 4 x 3 = 12 VV2 = I2R2 = 2 x 6 = 12 VV3 = I3R3 = 4 x 3 = 12 V.

Therefore, the current in each resistor is 4 A, 2 A, and 4 A, respectively. The voltage drop across each resistor is 12 V.

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Answer:

Ohayo, Haruki-kun here!

The answer is,  alcohol thermometer uses alcohol as the liquid to measure the temperature variations. Alcohol expands when it absorbs temperature and contract in colder temperatures. Most commonly used alcohol in these is ethanol, but different types of alcohols can be used depending on the measured temperature and environment in which the measurements are taken.

Explanation:

the momentum = m * v

m : mass

v : velocity

momentum = 1 * 50 = 50 kg.m/s

Newton's law of universal Gravity:

F = G * (M1 * M2)/ r^2

Where:

G = gravitational constant = 6.674 x10^-11 Nm^2kg^2

M1 = mass 1 = 45.9 kg

M2 = mass 2 = 5.98 x 10 ^24 kg

r = Distance between the 2 objects = 6.38 x 10 ^6 m

Replacing;

F = 450.048 N

Answer:

https://earthobservatory.nasa.gov/features/EnergyBalance#:~:text=The%20atmosphere%20absorbs%2023%20percent,surface%20radiates%20only%2012%20percent.

Explanation:

Answer:

The statements are not given, so I will answer in a general way.

We know that when one object is moving with a velocity V, and it wants to come to stop, it needs to accelerate in the opposite direction to the initial velocity (Or decelerate).

As larger this acceleration is, the faster the object will come to a full stop.

Now we have a car (with a mass m) and a truck (with a mass M) are moving with a velocity V.

We can assume that the mass of the truck is larger than the mass of the car, then:

M > m.

Now also remember Newton's second law:

F = m*a

Force equals mass times acceleration.

And we know that both vehicles stop with the same stopping force.

Then the acceleration (deceleration actually) that experiences the car is:

a = F/m

While the acceleration that experiences the truck is:

a' = F/M

Because M is larger than m, we will have:

a' < a

Then the deceleration of the truck is smaller than the one of the car, which means that the car will come to a full stop faster than the truck (or the truck needs more time to stop)

Answer:

C

Explanation:

Answer:

(C). c

Explanation:

The circuit has a constant gain of 1 for high frequencies, implying that it acts as a low-pass filter. To find the frequency response function H(w) for the given circuit, we need to determine the transfer function H(w) = V0(w) / Vi(w), where V0(w) is the output voltage and Vi(w) is the input voltage in the frequency domain.

L = 1 H (inductance)

R = 3.9 KΩ (resistance)

The circuit can be represented by the following equation:

H(w) = (jwL + R) / (jwL + R + 1)

To sketch the magnitude of the frequency response function H(w), we need to plot the magnitude |H(w)| as a function of frequency w.

Taking the magnitude of the transfer function, we have:

|H(w)| = |(jwL + R) / (jwL + R + 1)|

Next, let's analyze the type of ideal filter approximated by this circuit. We can examine the transfer function to determine the filter characteristics.

From the transfer function:

H(w) = (jwL + R) / (jwL + R + 1)

As w approaches infinity, the jwL term dominates the transfer function, and the transfer function becomes:

H(w) ≈ jwL / jwL = 1

This indicates that the circuit has a constant gain of 1 for high frequencies, implying that it acts as a low-pass filter. It allows low-frequency signals to pass through relatively unattenuated while attenuating high-frequency signals.

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The radius of the orbit of a geosynchronous satellite is R = 1.932 x 10⁸ m

This question involves the concepts of the time period, orbital radius, and gravitational constant.

given, G = 6.671011 N.m2/kg2 (gravitational constant)

Earth's mass = 5.98 x 1024 Kg

Earth's radius is 6.38 x 106 m.

equating the satellite's gravitational force with the centripetal force acting on it

where R = v and T = 84600 sec

so, R = 1.932 x 10⁸ m

A geosynchronous satellite is one that has an orbital period equal to that of the Earth's rotation and is in a geosynchronous orbit. After each sidereal day, a satellite of this type returns to the same location in the sky and, over the course of a day, carves out a route in the sky that is often some kind of analemma. The geostationary satellite, which has a geostationary orbit, a circular geosynchronous orbit straight over the Earth's equator, is a specific case of a geosynchronous satellite. The Tundra elliptical orbit is another type of geosynchronous orbit utilized by satellites.

All objects with mass attract each other with a force known as gravitational attraction. It is especially noticeable in massive astronomical objects like the Sun, Earth, and Moon. The reason for this is that the force is proportional to the product of the masses of the objects. Gravitational force is what propels the planets around the Sun and the Moon around the Earth. Humans exert force on each other, but it is insignificant due to their small masses.

Because there is no contact between the objects, gravitational force is non-contact. It is centripetal because it is aimed at the center of the orbit in which the object moves. It is in charge of keeping the body in orbit.

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Answer:

5824 yards^2

Explanation:

area = length x width

area = 112 x 52

area = 5824

Answer:

5824 squared yards

Explanation:

Answer:

Alternating

Explanation:

Edge 2020

The voltage drop along the length of the metal bar, when it carries a 4000 A current, is 0.134 V.

The voltage drop (ΔV) along a conductor can be calculated using Ohm's law, which states that the voltage drop is equal to the product of the current (I) and the resistance (R):

ΔV = I * R

In this case, the current (I) is 4000 A. To calculate the resistance (R), we need to use the formula:

R = (ρ * L) / A

where ρ is the resistivity of the metal, L is the length of the bar, and A is the cross-sectional area of the bar.

Given that the resistivity (ρ) is 1.68 × 10⁻⁸ Ω ∙ m, the length (L) of the bar is 20 cm or 0.2 m, and the cross-sectional area (A) is (1.0 cm) * (2.0 cm) = 2.0 cm² or 2.0 × 10⁻⁴ m².

Substituting the values into the resistance formula, we have:

R = (1.68 × 10⁻⁸ Ω ∙ m * 0.2 m) / (2.0 × 10⁻⁴ m²)

R = 1.68 × 10⁻⁴ Ω

Now, we can calculate the voltage drop

ΔV = (4000 A) * (1.68 × 10⁻⁴ Ω)

ΔV = 0.134 V.

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The resulting energies are given by: E_n = (n + 1/2)ħω

(a) To determine the first-order change in the energy level, we consider the perturbation Hamiltonian: H' = -qex
The first-order correction to the energy level is given by:
ΔE^(1) = ⟨n|H'|n⟩
However, in this case, the perturbation does not depend on the quantum number n, so the first-order correction is zero:
ΔE^(1) = 0
To calculate the second-order correction, we use the formula:
ΔE^(2) = ∑_(m≠n) (|⟨m|H'|n⟩|^2) / (E_n - E_m)
Substituting H' and evaluating the matrix elements, we obtain:
ΔE^(2) = (∑_(m≠n) |⟨m|-qex|n⟩|^2) / (E_n - E_m)
This expression requires knowledge of the specific wavefunctions for the harmonic oscillator potential and solving the Schrödinger equation to determine the energies and eigenstates.
(b) By making the change of variable x' = -x, we can rewrite the Schrödinger equation for the harmonic oscillator potential as:
(-ħ^2 / (2m)) d^2ψ/dx'^2 + (1/2)mω^2x'^2ψ = Eψ
This equation can be solved analytically, and the resulting energies are given by:
E_n = (n + 1/2)ħω
where n is the quantum number representing the energy level.
Comparing these exact energy values with the perturbation theory approximation, we can verify their consistency.

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Answer:

3.33 A

Explanation:

Equalent Resistance=30 ohms

I = V / R

I = 100 / 30

I = 3.33 A

Answer:

Roundworms:

The size of roundworms ranges from microscopic to as long as a meter long. Most roundworms have a hard, sharp lance on their head, and some have bristles on the head. Most of the roundworms are protected by an adaptable yet solid, furrowed body covering.  

Roundworms are very primitive living beings, having no respiratory or circulatory system of a host. They have an empty body with two openings at the closures. Be that as it may, the head isn't particular or recognizable to the unaided eye.  

Roundworms reproduce sexually and can finish their life cycle in immature puppies, however as the little pupps immunity system develops (for the most part by a half-year-old enough), the larval phases of the roundworm will become captured and will encyst (become encased in a sore) in the puppy's muscles. They can stay encysted in the pooch's tissues for a considerable length of time or years.

Answer:

Explanation:

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

force = mass × acceleration

From the question we have

force = 4.6 × 9.2

We have the final answer as

Hope this helps you

During a new moon, the moon is located between the sun and the Earth. The illuminated side of the moon is facing away from the Earth and towards the sun, so it is not visible from the Earth.

The side of the moon facing the Earth is in shadow, which is why a new moon is not visible in the night sky. The alignment of the sun, Earth, and moon during a new moon is also what causes a solar eclipse, when the moon passes directly in front of the sun, blocking its light from reaching the Earth.

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Answer:

well i may be wrong but i geussed letter B

Answer:

letter B

Explanation:

20m/s2squared

An engine moves a boat through the water at a constant speed of 15 m/s. The engine must exert a force of 6.0 kN to balance the force that the water exerts against the hull. Power is the measure of how fast work can be done. The unit of power is watts (W), which can be defined as the amount of work done in one second.

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Answer: The balloons repel each other but attract the rabbit fur.

Brainliest pwease if I could do you any help!

Here, both the balloons gains a negative charge through rubbing and they attracts to the neutral rabbit fur. But the balloons themselves repel each other. Hence, option B is correct.

When a  material rub on a surface its electrons gets aligned and acquire a negative charge. This negative charge when comes in contact with a neutral material, the second one get partially polarized and gets attracted to the negative charge.

This flow of electrons through induced polarization is called static electricity. When the balloon are rubbed with the neutral rabbit fur and gets negatively charged by friction.

This negatively charged balloons repel each other but they induce a polarity to the neutral rabbit fur and its positive charges gets aligned with the negative charges results in electrostatic attraction.

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they have oscillating electric and magnetic fields

Answer:

-2.25

Explanation:

v=u+at

0=9+a(4)

9+4a=0

4a=-9

a= -2.25

the rate of acceleration of the car coming to a stop is 2.25 m/s².

speed is described as. the pace at which an object's location changes in any direction. Speed is defined as the distance traveled divided by the travel time. Speed is a scalar quantity because it just has a direction and no magnitude.

given, A person driving in a neighborhood traveling 9 m/s slows to a stop (0 m/s) over 4 seconds as they approach a stop sign.

The acceleration of the car can be calculated using the formula:

acceleration = (final velocity - initial velocity) / time

Here, the initial velocity is 9 m/s (the speed at which the car was traveling before braking),

the final velocity is 0 m/s (the speed at which the car comes to a stop), and the time taken to stop is 4 seconds. Substituting these values into the formula,

we get:

acceleration = (0 m/s - 9 m/s) / 4 s

acceleration = -9 m/s / 4 s

acceleration = -2.25 m/s²

The negative sign indicates that the car is decelerating, or slowing down.

Therefore, the rate of acceleration of the car coming to a stop is 2.25 m/s².

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Volume of the balloon occupy in the instant before it bursts is 7.39 litres and can be find out by boyle's law.

Boyle’s law:

This law gives the relationship between initial and final pressure and volumes for an ideal gas.

Initial condition

Let the volume of the balloon is V1=2.00 L

And, the initial pressure is P1=1.75 atm

Final condition

Let the volume of balloon before it bursts is V2

final pressure is P2=360 mmHg

                                =360/760 atm

                                =0.7368 atm
                           (1atm=760mmHg)

Now, according to boyle’s law

P1V1=P2V2

V2=P1V1/P2

V2=1.75*2.00/0.47368 L

V2=1.39L

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To calculate the amount of fuel needed, we can use the concept of conservation of momentum. The change in velocity can be achieved by expelling mass at a specific exhaust velocity.

First, let's calculate the initial momentum of the spaceship:

Initial momentum = mass * velocity

Initial momentum = 6000 kg * 500 m/s

Initial momentum = 3,000,000 kg·m/s

To achieve a final velocity of 600 m/s, the spaceship needs to increase its momentum by:

Change in momentum = mass * change in velocity

Substituting the given values:

Change in momentum = mass * (final velocity - initial velocity)

Change in momentum = 6000 kg * (600 m/s - 500 m/s)

Change in momentum = 6000 kg * 100 m/s

Change in momentum = 600,000 kg·m/s

Now, let's determine the amount of fuel needed by considering the exhaust velocity. The change in momentum is equal to the momentum gained by the expelled fuel:

Change in momentum = expelled mass * exhaust velocity

Substituting the given values:

600,000 kg·m/s = expelled mass * 1.5 km/s

To convert the exhaust velocity to m/s:

1.5 km/s = 1500 m/s

Now we can solve for the expelled mass:

expelled mass = change in momentum / exhaust velocity

expelled mass = 600,000 kg·m/s / 1500 m/s

expelled mass = 400 kg

Therefore, the spaceship would need 400 kg of fuel to increase its velocity from 500 m/s to 600 m/s with an exhaust velocity of 1.5 km/s.

The value of resistor R that gives the circuit in the figure a time constant of 22 μs is 220 Ω.

The circuit that is in the figure is shown below:Given that time constant (RC) = 22 μs. To find the value of resistor R, we need to use the formula for the time constant:

RC = τ, where R is the resistance and C is the capacitance of the circuit.

Rearranging the above formula, we get:R = τ / C

Where τ is the time constant and C is the capacitance of the circuit.

From the figure, the capacitance is given as 0.1 μF

.Substituting the values of τ and C in the above formula, we get:

R = (22 × 10⁻⁶ s) / (0.1 × 10⁻⁶ F)

R = 220 Ω

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(c) Total internal reflection occurs

when the incident angle is greater than the critical angle.