Which one do I press guys?

Answer:

Since the two forces are represented by Fap and For, we can assume that Fap refers to the force applied by your hand on the dog while petting it, and For refers to the equal and opposite force applied by the dog's body on your hand.

The diagram showing your hand petting a dog would look something like this:

```

____

/ \

/ \

/ D \

/ \

/____________\

H

```

In this diagram, the force Fap is represented by an arrow pointing from your hand towards the dog's body, and the force For is represented by an arrow pointing in the opposite direction, from the dog's body towards your hand.

We can describe the two forces as follows:

- Fap: The force applied by your hand on the dog's body while petting it.

- For: The equal and opposite force applied by the dog's body on your hand, according to Newton's third law of motion.

The incident power of the solar radiation is 1,185.6 W.

The thermal energy gained by the water is calculated as follows;

Q = mcΔθ

Q = 0.019 x 4200 x (72 - 20)

Q = 4,149.6 J

The incident power of the solar radiation is calculated as follows;

\(0.7\times P = \frac{Q}{t} \\\\P = \frac{Q}{0.7t} \\\\P = \frac{4149.6}{0.7 \times 5} \\\\P = 1,185.6 \ W\)

Thus, the incident power of the solar radiation is 1,185.6 W.

The complete question is below

In 5.0 s, 0.019 kg of water flows through the tubes of a solar heater. The temperature of the water increases from 20 °C to 72 °C. The specific heat capacity of water is 4200 J / (kg °C). Calculate the thermal energy gained by the water in 5.0 s.

The efficiency of the solar panel is 70%. Calculate the power of the solar radiation incident on the panel.

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Power outlet in the house is the source which provides alternating current. Thus, the correct option is B.

Alternating Current (AC) is a type of electrical current, in which the direction of the flow of electrons in the circuit switches back and forth at the regular intervals or cycles. Current flowing in the power lines and the current in normal household electricity comes from a wall outlet are the alternating current type.

Alternating current voltage is capable of converting voltage levels with help of just a transformer, making it far easier to transport across great distance than direct current, whose conversion requires more complex electronic circuitry in comparison to alternating current.

Therefore, the correct option is B.

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A source is unreliable when the author was incentivized to write the article that may not depict the truth in totality or may skew the truth entirely. For example, sources like Fox News or CNN tv are skewed information that may make the author lean one way or another politically. These sources don't give the information flatly and rather have an opinion before the facts are fully presented.

Answer:

option A

Explanation:

hope this helps :)

Answer:

Explanation:

The electron with a smaller mass will accelerate faster than the proton as the force is the same.

Charge on electron = Charge on proton = 1.6*10^-19C

Distance between the two electrons = 1.5*10^-10m

The Electric force between two electrons is given by :

k*Q1*Q2/d^2, where k is the Coulombic constant = 9*10^9

= (9*10^9)*1.6*10^-19*1.6*10^-19/(1.5*10^-10)^2

= 1.024*10^-8N

Electron acceleration = Force/mass

= 1.024*10^-8/9.1x10^-31

= 1.125*10^22 m/s^2

Answer:

Explanation:

electron will accelerate faster cuz' its lighter

charge on electron n proton = 1.6*10^-19C

coulombic force bet electron n proton

= k*q^2/d^2 where k is the Coulombic constant = 9*10^9

= (9*10^9)*(1.6*10^-19)^2/(1.5*10^-10)^2

= 1.02*10^(-8)N

force = mass*acceleration

e- mass: 9.1*10^(-31)

acceleration = 1.02*10^(-8)/(9.1*10^(-31))

= 1.12*10^(22) m/s^2

Answer:

Explanation:

A) The output force required to lift a 15 kg object would be equal to the weight of the object, which is given by:

Output force = Weight of object = m * g

where m is the mass of the object and g is the acceleration due to gravity. Assuming that g is equal to 9.81 m/s^2, we have:

Output force = 15 kg * 9.81 m/s^2 = 147.15 N

Therefore, the output force required to lift a 15 kg object would be 147.15 N.

B) In this case, the input force is the force that you are pushing down with the lever, which is given as 20 N.

C) The mechanical advantage of the ramp is given by the ratio of the output force to the input force. In this case, the output force is the weight of the object (40 N) and the input force is the force that you are pushing with (10 N). Therefore, the mechanical advantage of the ramp would be:

Mechanical advantage = Output force / Input force = 40 N / 10 N = 4

So, the ramp multiplies your force by a factor of 4.

Note that in all of these calculations, we have assumed that the system is ideal and that there are no losses due to friction or other factors. In practice, these losses will reduce the mechanical advantage of the system and make it more difficult to lift or move objects.

The correct answer is Option B. The statement "they have the same A-number but different Z-number" is true .

Atoms of the same element only differ because one of the atoms has more electrons, making it an ion.

This difference does not affect the mass of the atom, which is determined by the sum of its protons and neutrons, represented by the atomic mass or A-number.

The number of protons in an atom is called the atomic number or Z-number.

The Z-number of an element is unique to it. All the atoms of a given element have the same number of protons.

Thus, for example, all carbon atoms have six protons, making the Z-number of carbon 6.

However, different isotopes of an element can have different numbers of neutrons.

This means that they have a different atomic mass or A-number.

Therefore, they have the same A-number but different Z-number.

Therefore the correct Option is B.

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The statement states that the force between both the bodies at a distance of 7.5 km equals F = 32 N.

This force that earth applies to a body is referred to as gravitational force. Its down motion of water in the river, the downwards motion if water in a stream, or an upwards motion of a ball being thrown are examples of motion brought on by gravitational influence.

F = k/d²  where k is the inverse variation's constant.

18 N = k / (10 km)²

18 N = k / 100 km²

k = (18 N) (100 km²)

k = 1800 (N)(km²)

F = ?

d = 7.5 km

k = 1800 (N) (km²)

F = 1800 (N)(km²) / (7.5 km)²

F = 1800 (N) (km²) / (55.25 km²)

F = 32 N

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Answer:

Explanation:

Distributive property:

A(B+C)=AB+AC

(4x-2)2

Switch sides.

→ 2(4x-2)

Multiply.

⇒ 2*4x=8x

⇒ 2*2=4

Rewrite the problem down.

⇒ = 8x-4

\(\Longrightarrow: \boxed{\sf{8x-4}}\)

I hope this helps you! Let me know if my answer is wrong or not.

Answer: 8x - 4

Explanation:

(4x -2)*2

apply distributive property

2* 4x - 2 * 2

Multiply the monomials = 8x

2*4x - 2*= 8x-2*2

calculate =

8x-4

Answer: 8x - 4

Answer:

MASS is measured in KILOGRAMS

Weight is measured in NEWTONS

Explanation:

Answer:

Mass is measured in kilograms(kg), and weight is measured in newtons(N).

Explanation:

165,000 meters to cm is 16,500,000 cm

Distance is the measured length between two point. It is measured in meters

Distance can also be measured in

Conversion of meter to centimeter can be done by multiplying the value by 100

What is 165,000 meters to cm ?

165,000 meters × 100 = 16,500,000 cm

Therefore, 165,000 meters to cm is 16,500,000 cm

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Answer:

V₁ = 48 m/s

Explanation:

Using the Conservative Law of Momentum:

∑Qₓ = 0

Q₁ + Q₂ = 0

Q₁ = Q₂  (In absolute values)

Where:

Q₁: right before the impact

Q₂: right after the impact

So:

Q₁ = Q₂

m₁*V₁ + m₂*V₂ = m₁*V + m₂*V  (Because both ball and man moves together)

5 * V₁ + 75 * 0 = (5 + 75)*3

5V₁ = 80 * 3

V₁ = 240/5

V₁ = 48 m/s

Answer:

“Insanity is relative. It depends on who has who locked in what cage.” R.D. Laing: “Insanity – a perfectly rational adjustment to an insane world.” Nora Ephron: “Insane people are always sure that they are fine. It is only the sane people who are willing to admit that they are crazy.”Sep 20, 2012

Explanation:

The buoyant effect on a thing is proportional to the mass of the fluid it is displacing, according to Archimedes' principle.

The balance of a body drifting in still water depends on Archimede's Principle, which asserts that a body submerged in a liquid suffers an upthrust proportional to the weight of a fluid expelled .In calm water, a body that really is free-floating experiences the downward force of gravity.

It is applied to ship and submarine design. It is employed in lactometers to assess the milk's purity. It's utilized in hydrometers to calculate fluid densities. In hydraulic lifts, it is utilised.

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Answer:

The right solution is "\(4.5\times 10^{-10} \ Cm\)".

Explanation:

Given that,

q = 0.50 nC

d = 900 mm

As we know,

⇒ \(P=qd\)

By putting the values, we get

⇒     \(=0.50\times 900\)

⇒     \(=(0.50\times 10^{-9})\times 0.9\)

⇒     \(=4.5\times 10^{-10} \ Cm\)  

Answer:

The dipole moment is 4.5 x 10^-10 Cm.

Explanation:

Charge on each ball, q = 0.5 nC

Length, L = 900 mm = 0.9 m

The dipole moment is defined as the product of either charge and the distance between them.

It is a vector quantity and the direction is from negative charge to the positive charge.

The dipole moment is

\(p = q L\\\\p = 0.5 \times 10^{-9}\times 0.9\\\\p = 4.5\times 10^{-10} Cm\)

Answer:

Volume measures liquid

Explanation:

Volume can be measured in meters and centimeters

Answer:

920000

Explanation:

Each kg contains 1,000 grams

Answer:

The value of m = 3.735 and the value of n = 7.

Explanation:

The equation for the momentum of the train is,

                                          P = mv  

Here, m is the mass of the train and v is the speed of the train.

Substitute \(4.5 \times {10^5}{\rm{ kg}} , 8.3 \times {10^1}{\rm{ m/s}}\) for m and v respectively in above equation.

\(\begin{array}{c}\\P = \left( {4.5 \times {{10}^5}{\rm{ kg}}} \right)\left( {8.3 \times {{10}^1}{\rm{ m/s}}} \right)\\\\ = 37.35 \times {10^6}{\rm{ kg}} \cdot {\rm{m/s}}\left( {\frac{{{{10}^1}{\rm{kg}} \cdot {\rm{m/s}}}}{{10\,{\rm{kg}} \cdot {\rm{m/s}}}}} \right)\\\\ = 3.735 \times {10^7}{\rm{ kg}} \cdot {\rm{m/s}}\\\end{array}\)  

According to the scientific notation, here the value of m is 3.735 and the value of n is 7 in the final answer of the momentum.

                        The value of m = 3.735 and the value of n = 7.

It is possible to study the connection between motivation, rewards, and production from a variety of angles, including those of economics, psychology, and physics.

Because producers are motivated to satisfy consumer demand, free markets offer a larger variety of commodities than any other system. What is created is under the control of the consumer.

In theory, free markets work best because supply and demand are efficiently distributed by an invisible hand. Yet, in practise, open markets are prone to manipulation, false information, and imbalances of power and knowledge, which also contribute to wealth disparity.

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In general, option c - warming it up on the stove - is often an effective method to increase the reaction rate.

Increasing the temperature of a reaction generally leads to faster reaction rates. This is because higher temperatures provide more thermal energy to the reactant particles, causing them to move faster and collide more frequently. The increased collision frequency and energy lead to more successful collisions and a higher likelihood of effective molecular interactions, which speeds up the reaction. On the other hand, options a and b - putting it in the fridge where it is cold or covering it with a blanket to make it dark - are unlikely to have a significant effect on the reaction rate. While temperature can influence reaction rates, cooling the reaction or making it dark typically reduces the kinetic energy of the particles, resulting in slower reaction rates. Option d - there is nothing you can do to change the speed of the reaction - is not accurate. The reaction rate can be influenced by various factors such as temperature, concentration, catalysts, and surface area, among others. By manipulating these factors, it is often possible to control and change the speed of a reaction. Hence option c, is correct

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The intensity of the force F is calculated to be approximately 2.83 N.

Coefficient of sliding friction is a value that measures force of sliding friction for particular surface type.

Weight = mg = 1 kg x 10 m/s² = 10 N (acting downwards)

F_vertical - Weight = 0

F_vertical = 10 N

As Frictional force = coefficient of friction x normal force

Frictional force = 0.2 x 10 N = 2 N (acting to the left)

F_horizontal = F x cos(45) = F / √2

F_horizontal - frictional force = 0

F_horizontal = frictional force = 2 N

F / √2 = 2 N

F = 2 N x √2

F ≈ 2.83 N

Therefore, the intensity of the force F is approximately 2.83 N.

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Hi there!

We can use the following kinematic equation:
\(v_f^2 = v_i^2 + 2ad\)

vf = final velocity (0 m/s at the top of the trajectory)
vi = initial velocity (at which it was thrown, ? m/s)

a = acceleration (due to gravity, 9.8 m/s²)

d = displacement of the javelin (100 m)

We can plug in the givens:
\(0 = v_i^2 + 2(-9.8)(100)\\\\2(9.8)(100) = v_i^2\)

Take the square root to solve:
\(v_i = \sqrt{2(9.8)(100)} = \boxed{44.27 \frac{m}{s}}\)

Answer:

Explanation:

Please post if there is a graph showing the data.

Without a graph, in general the trend can be described as:

"positive" when the dependent variable increases with an increase in independent variable

"negative" when the dependent variable decreases with an increase in independent variable

"neutral" when the dependent variable remains the same with an increase or decrease in independent variable

if an atom has an equal number of protons and electrons, its net charge is 0. If it gains an extra electron, it becomes negatively charged and is known as an anion. If it loses an electron, it becomes positively charged and is known as a cation.

hope this helps

Question should be corrected

Answer:-

See

If both are equal then

Here the given's question answer must be electron or its wrong

It would take approximately 546 days for the decay rate of the sample of this radioactive isotope to fall to 0.58 of its initial rate.

1. The decay rate of a radioactive isotope is proportional to the number of radioactive atoms present in the sample at any given time.

2. The decay rate can be expressed as a function of time using the formula: R(t) = R₀ * \(e^{(-\lambda t\)), where R(t) is the decay rate at time t, R₀ is the initial decay rate, λ is the decay constant, and e is the base of the natural logarithm.

3. The half-life of a radioactive isotope is the time it takes for half of the radioactive atoms in a sample to decay. In this case, the half-life is given as 210 days.

4. Using the half-life, we can find the decay constant (λ) using the formula: λ = ln(2) / T₁/₂, where ln(2) is the natural logarithm of 2 and T₁/₂ is the half-life.

5. Substituting the given half-life into the formula, we have: λ = ln(2) / 210.

6. Now, we need to find the time it takes for the decay rate to fall to 0.58 of its initial rate. Let's call this time "t".

7. Using the formula for the decay rate, we can write: 0.58 * R₀ = R₀ * e^(-λt).

8. Simplifying the equation, we get: 0.58 = \(e^{(-\lambda t\)).

9. Taking the natural logarithm of both sides, we have: ln(0.58) = -λt.

10. Substituting the value of λ from step 5, we get: ln(0.58) = -(ln(2) / 210) * t.

11. Solving for t, we have: t = (ln(0.58) * 210) / ln(2).

12. Evaluating the expression, we find: t ≈ 546.

13. Therefore, it would take approximately 546 days for the decay rate of the sample of this radioactive isotope to fall to 0.58 of its initial rate.

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Answer:

  a = (v₃₂ - v₂₁) / (t₃₂ -t₂₁)

Explanation:

This is an exercise of average speed, which is defined with the variation of the distance in the unit of time

         v = (y₃ - y₂) / (t₃-t₂)

the midpoint of a magnitude is the sum of the magnitude between 2

         t_mid = (t₂ + t₃) / 2

the same reasoning is used for the mean acceleration

         a = (v_f - v₀) / (t_f - t₀)

in our case

        a = (v₃₂ - v₂₁) / (t₃₂ -t₂₁)

part a.  the wavelength of this wave  is 26 cm

part b. The amplitude (A) of a wave is 9 cm

The wavelength (λ) of a wave is described as the distance between two consecutive points on the wave that are in phase.

In this scenario, the distance between two corresponding points on the wave will be equal to the horizontal distance from crest to trough, which is 26 cm.

Hence, the wavelength of the wave is: λ = 26 cm

The amplitude (A) of a wave is described as the maximum displacement of a particle from its rest position as the wave passes through it.

In this scenario, the vertical distance from crest to trough is 18 cm, which is equal to twice the amplitude.

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The mass of the Earth written in scientific notation is 5.97 × 10²⁴ kg and \(m, n\) = \(5.97, 24\).

Scientific notation is a way of expressing very small or very large numbers in a simpler form.

In scientific notation, the number is written as

c

Where

Write this large number in scientific notation!

Mass of the Earth = 5,970,000,000,000,000,000,000,000 kg

Determine the \(m\) and \(n\), separated by commas!

We count the number of 0 in the value above. It is 22.

In scientific notation, the mass of the Earth is

= 5,970,000,000,000,000,000,000,000 kg

= 597 × 10²² kg

= 5.97 × 10²⁴ kg

m × 10ⁿ = 5.97 × 10²⁴ kg

The value of

\(m, n\) = \(5.97, 24\)

Hence, the scientific notation of the mass of the Earth is 5.97 × 10²⁴ kg with \(m, n\) = \(5.97, 24\).

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Answer:

13/23 ydfffgggggggffttf