although the pivot exerts a force on the ruler it does not exert a torque with respect to the pivot point. why not? although the pivot exerts a force on the ruler it does not exert a torque with respect to the pivot point. why not? because the exerted force is vertical. because the distance from the exerted force to the pivot is zero. because the exerted force is along the ruler.

Answer:

yes

Explanation:

masses attract each other

with a teeny-tiny force

Answer:

Michael

Explanation:

A tennis player hits a 56.0 g ball vertically with her racket to warm up for a match.

In this scenario, the tennis player is using the vertical hitting of the ball as a warm-up exercise before the match.

This helps to increase blood flow to the muscles, improve coordination, and prepare the body for the more intense activity of a tennis match.

The mass of the ball, 56.0 g, is given as part of the problem, but there is no information provided about the force or velocity of the hit.

Summary: A tennis player warms up by hitting a 56.0 g ball vertically with her racket, which aids in preparing her body for the match. However, information regarding the force or velocity of the hit is not provided.

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The wavelength of violet light is approximately half that of wavelength of red light.

Light energy is a form of kinetic energy that has the ability to make some kind of light visible to the human eye. Light is defined as a form of electromagnetic radiation emitted by hot objects such as lasers, incandescent bulbs, and the sun.

Light contains photons, which are tiny packets of energy. When the atoms of an object heat up, they produce photons.

Mathemaically, E = hv

where, E ----> energy of a light wave .

h ---> Planck's constant.

v---> frequency.

we have provided that, energy of violet light is twice of energy of red light.

E₁ = 2E₂ where, E₁----> energy of violet light

E₂----> energy of red light

from above formula, hν₁= 2 hν₂=> ν₁= 2ν₂

Using the relation, v = c/λ

for violet light ,ν₁ = c/λ₁ and ν₂= c/λ₂

λ₁ --> wavalenght of violet light

λ₂--> wavelength of red light

c/λ₁= 2 c/λ₂

=> λ₁= 1/2 λ₂

Hence, wavelength of violet light is half of wavelength of red light.

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The required total momentum of the system at this instant is calculated to be 9.16 kg m/s.

Given that,

Mass of the first cart, m₁ = 2.5 kg

Mass of the second cart, m₂ = 1.3 kg

Velocity of the first cart before collision, u₁ = 4.6 m/s

Velocity of the second cart before collision, u₂ = -1.8 m/s

The total momentum of the system before collision is calculated as follows,

P t = P₁ + P₂

P t = m₁ u₁ + m₂ u₂ = 2.5 × 4.6 + (1.3 × -1.8) = 11.5 - 2.34 = 9.16 kg m/s

Thus, total momentum of the system of the two carts at this instant is 9.16 kg m/s.

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Answer:

Negatively charged, to positively charged parts

Explanation:

Electrons are negative, negative is attracted to positive.

The Question does not contain any option, the question is incomplete.

I think the Question may be :

Television is an integral part of our daily entertainment. for which of these processes has the television not used any form of energy?

A. manufacturing

B. packaging

C. storage

D.none of the above


The operation of televisions requires the use of energy throughout its entire lifecycle, from the manufacturing process, packaging, storage, transportation, and its use by consumers. The correct option is D.

During the manufacturing process, the television components need to be assembled and tested, which requires the use of energy to power the machinery and tools used in the process.

Packaging and storage also require energy to produce and maintain suitable conditions for the television until it is sold to consumers.

Transportation of televisions from the manufacturing facility to retailers or directly to consumers requires the use of energy for shipping and logistics. Finally, the use of televisions by consumers requires energy to power the device and produce the images and sounds on the screen.

Therefore, The correct answer is D i.e none of the above

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The magnitude of the force applying on the charge is 5 N and the direction of the force will be the same as the electric field.

It is an area in space around a charged particle where other charged particles experience a force either attractive or repulsive.

\(F = qE\)

Where,

\(q\) - Charge = 0. 05 C

\(E\) - electric field  = 100 N/C

Put the values in the formula,

\(F = 0.05 \times 100\\\\F = 5 \rm \ N\)

Therefore, the magnitude of the force applying on the charge is 5 N and the direction of the force will be the same as the electric field.

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Answer:

5 N Downward

Explanation:

Just did on edge

Answer:

put a magnet on a conductive surface

Answer:

D

Explanation: Given that a student leaves their history classroom and walks 20 meters north to a drinking fountain. Then the student turns and walks 50 meters south to their art classroom.

The distance is a scalar quantity.

The distance = 50 + 20

distance = 70 metres

Therefore, the magnitude of the total distance traveled by the student is 70 metres. Which is option D

Answer:

Mark me as brainliest as i need it ..

I will answer your questions

Ten devices that use batteries are: smartphones, laptops, flashlights, digital cameras, portable speakers, electric toothbrushes , remote controls, electric shavers, handheld game consoles, and electronic toys

What are the batteries?

Here are ten devices that use cells or batteries:

Whether or not the cells or batteries used in these devices are the best choice depends on various factors such as the device's power requirements, energy efficiency, cost, and environmental impact.

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Answer: velocity

Explanation: Acceleration = change in velocity / time interval

5m/s to 25 m/s, in 2 seconds. So 25m/s - 5 m/s, then divide by time =

10m/s squared

The question does not have enough information to find out the power gain.

The value of the power gain in dB for the circuit can be found using the formula:

Power Gain (dB) = 10 log (Output Power/Input Power)

Here, the output power is given as 20 W and the input voltage is given as 2 V. Since power is directly proportional to the square of the voltage, we can calculate the input power using the formula:

Input Power = (Input Voltage)^2/R, where R is the input resistance of the amplifier.

Without information about the input resistance, we cannot calculate the exact value of the power gain in dB. Therefore, the answer is "not enough information given".

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Answer:

Explained below

Explanation:

To explain this, let's consider a tennis ball being launched from the top of a very high building.

Now, if the tennis ball is launched horizontally without any upward angle but with an initial velocity of 10 m/s. In this motion, If there is no gravity, the tennis ball would continue in motion at that same speed of 10 m/s in the horizontal direction. However, in reality, gravity causes the tennis ball to accelerate downwards at a rate of 9.8 m/s for every second. This implies that the vertical velocity component is changing at the rate of 9.8 m/s every second.

Thus, after 1 second, horizontal velocity component will remain 10 m/s and vertical component will be 9.8 m/s × 1 = 9.8 m/s downwards.

Also, after 2 seconds, the vertical velocity component will remain 10 m/s, however the vertical component will now be 9.8 × 2 = 19.6 m/s downwards.

Same procedure is repeated as t increases by 1 second.

the answer to this problem is 15

Answer:itts 20 15 is incorrect ill show u proof

Explanation:

Answer:

G M m / R^2      attraction of Jupiter to sun where m is mass of Jupiter

m V^2 / R      centripetal force acting on Jupiter

R = G M / V^2

The radius would be unchanged, and its orbit would be unchanged

It will need a force acceleration

Answer:

Explanation:

The resultant would be a combination of the two forces. We need to add them together since they are exerting a force in the same direction.

10+30= 40 N of force

In physics :

Sound is a vibration that propagates as an acoustic wave, through a transmission medium such as a gas, liquid or solid.

In human physiology and psychology ;

Sound is the reception of such waves and their perception by the brain. .

nd is the reception of such waves and their perception by the brain. .

In simple words ;

Sound is the vibration that travels through the air or another medium as an audible mechanical wave( It is produced from a vibrating body. The vibrating body causes the medium (water, air, etc.) around it to vibrate thus producing sound. An

Answer:

It [the diamond] would act like a prism, and make a rainbow, or, the light would break up and disappear

Explanation:

that's what I would think at least

Answer:

a cat could eat it

Explanation:

Fluffy ate my diamond

From the calculation, the speed of sound at 10 K is 63.5 m/s.

We know that the speed of sound is directly proportional to the temperature of the body thus we can write;

V1/V2 = √T1/T2

Then;

T1 = 0 degrees or 273 K

T2 = 10 K

V1 = 330 m/s

V2 = ?

330/T2 = √273/10

330/T2 = 5.2

330 = 5.2T2

V2 = 330/5.2

V2 = 63.5 m/s

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Answer:

Gas has the fastest moving particles. Liquid has the second fastest. Solid's particles cannot move.

Explanation:

Gas's molecules are spread apart and have space to move. Liquids have loosely held molecules. Solid's molecules don't move because they are tighly packed.

The potential difference is needed to give a helium nucleus (q=2e) 50.0 keV of kinetic energy is approximately 4.0 * 10^-18 J/e.

To calculate the potential difference required to give a helium nucleus 50.0 keV of kinetic energy, we can use the equation relating energy and potential difference, the equation is: qV = E
Where q is the charge of the particle, V is the potential difference, and E is the energy. In this case, the charge of a helium nucleus is 2e and the energy is 50.0 keV.
Converting the energy to joules, we have: E = 50.0 keV = 50.0 * 1.6 * 10^-19 J = 8.0 * 10^-18 J

Plugging the values into the equation, we have: (2e)V = 8.0 * 10^-18 J
Simplifying, we find:

V = (8.0 * 10^-18 J) / (2e)
V = 4.0 * 10^-18 J/e
Therefore, the potential difference needed to give a helium nucleus 50.0 keV of kinetic energy is approximately 4.0 * 10^-18 J/e.

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Answer: He was labeled as one of Africa's cruelest dictators because during his eight year reign many civilians were massacred. He drove out Uganda's Indian and Pakistani citizens and spent large amount of money on the military which led to the economic decline of the country.

Explanation:

The volume of one rubber ball and the cost of producing one ball and the profit will it make on each ball will be 20.58 cm³, $0.09261, and $0.40739 respectively.

It is concerned with the geometry, region, and density of various 2D and 3D shapes.

The given data in the problem is;

r is the Rubber balls = 1.7 cm

V is the volume

C is the cost of production

P is the profit

The volume of the rubber ball is  found as;

\(\rm v= \frac{4}{3} \pi r^3 \\\\ \rm v= \frac{4}{3} \times 3.14 (4.913)^3 \\\\ \rm v= 20.58 cm^3\)

If the price of the rubber required to make a ball is $0.0045/cm3, the ball's production cost will be $0.0045/cm3.

The cost of a ball is the multiplication of the cost of one ball and the selling price of the ball;

C = 0.0045 x 20.58

C = $0.09261

P is the profit gained and profit is the subtraction of the selling price and cost price.

P = S.P.-C.P.

P=0.5 - 0.09261

P = $0.40739

Hence the volume of one rubber ball and the cost of producing one ball and the profit will it make on each ball will be 20.58 cm³, $0.09261, and $0.40739 respectively.

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Answer:  

1: C

2: C

3: A

Explanation: just did it

In 1903, Henri Becquerel, Pierre Curie, and Marie Curie were awarded the Nobel Prize in Physics for their groundbreaking work in radioactivity discovery. Their collaboration revolutionized physics and science.

In 1903, the Nobel Prize in Physics was awarded jointly to Henri Becquerel, Pierre Curie, and Marie Curie for their pioneering work in the discovery of radioactivity.

Henri Becquerel, a French physicist, discovered radioactivity by chance while studying the phenomenon of fluorescence. He found that certain substances emit radiation spontaneously, even in the absence of an external energy source.

Pierre Curie, a French physicist, and his wife Marie Curie, a Polish-born physicist, further investigated radioactivity. They discovered new radioactive elements, such as polonium and radium, and conducted extensive research on their properties.

Their collaborative efforts paved the way for our understanding of the fundamental nature of atomic structure and radioactivity. Through their discoveries, they revolutionized the field of physics and made significant contributions to the advancement of science.

Overall, Henri Becquerel, Pierre Curie, and Marie Curie were awarded the Nobel Prize in Physics in 1903 for their remarkable discoveries and contributions to the understanding of radioactivity.

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In an experiment using this circuit, an ammeter reading was 0.75 resistance 16 0. So the voltmeter reading is 12V.

To solve this we know V = IR

So V = current passes from ammeter × R( resistor)

V = 0.75 × 16 = 12V

V=IR, right here V is the capability difference throughout a resistance R via which a modern-day I is flowing. The ammeter is attached in series with the circuit. So its reading will display the fee of the contemporary flowing in the circuit. therefore, the reading of the ammeter is equal to 1A.

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a) Tina drives approximately 69.93 meters before passing David.

b) Her speed as she passes him is approximately 34.77 m/s.

To find the distance Tina drives before passing David, we can use the equation:

\(\[d = ut + \frac{1}{2}at^2\]\)

where:

d is the distance traveled,

u is the initial velocity (0 m/s for Tina),

a is the acceleration (2.90 m/s² for Tina), and

t is the time.

First, we need to determine the time it takes for Tina to catch up with David. Since David is driving at a constant speed of 31.0 m/s, the time Tina needs to catch up can be found using the equation:

\(\[t = \frac{d}{v}\]\)

where:

\(\(t\)\)  is the time,

\(\(d\) \\\) is the initial distance between Tina and David (0 m), and

v  is the relative velocity of Tina with respect to David (31.0 m/s).

Substituting the values, we find:

\(\[t = \frac{0\,m}{31.0\,m/s} = 0\,s\]\)

Since Tina begins to accelerate at the instant when David passes, she starts from rest and requires no time to catch up.

a) Using the equation for distance, we find:

\(\[d = ut + \frac{1}{2}at^2 = 0 + \frac{1}{2}(2.90\,m/s²)(0\,s)^2 = 0\,m\]\)

Therefore, Tina does not drive any distance before passing David.

b) Since Tina catches up with David at the same instant he passes, her speed is equal to his speed. Thus, her speed as she passes him is approximately 31.0 m/s.

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Tina drives approximately 158.2 meters before passing David. Tina's speed as she passes David is 31.0 m/s.

To find the distance Tina drives before passing David, we need to determine the time it takes for Tina to catch up with David first. We can use the equation:

d = v0t + 0.5at2

Where d is the distance, v0 is the initial velocity, a is the acceleration, and t is the time. Rearranging the equation to solve for t:

t = (v - v0) / a

Substituting the given values:

t = (0 - 31.0 m/s) / (-2.90 m/s²)

t ≈ 10.69 seconds

To find the distance:

d = v0t + 0.5at2

d = 0 + 0.5(-2.90 m/s²)(10.69 s)2

d ≈ 158.2 meters

Therefore, Tina drives approximately 158.2 meters before passing David.

To find Tina's speed as she passes David, we can use the equation:

v = v0 + at

Substituting the given values:

v = 0 m/s + (2.90 m/s²)(10.69 s)

v ≈ 31.0 m/s

Therefore, Tina's speed as she passes David is 31.0 m/s.

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Answer:

THY ANSWER IS G..

Can you please give me brainliest??

Explanation: