how far from a converging lens with a focal length of 35 cm should an object be placed to produce a real image which is the same size as the object?

Answer:

B not enough info

Explanation:

Not enough information because you need the weight to find the gpe!

The upward force exerted by the hand of each person to support the metal plate is 150.54  N.

The upward force exerted by the hands of the three people provides support on the metal plate.

The volume of air displaced by the metal isosceles plate is calculated as follows;

\(V = A \times d\\\\V = \frac{1}{2} ba \times d\\\\V = \frac{1}{2} \times 0.7 \times 1.35 \times 0.015\\\\V = 0.00709 \ m^3\)

The mass of the metal plate is calculated as follows;

\(m = \rho V\\\\m = 6,500 \ kg/m^3 \ \times 0.00709 \ m^3\\\\m = 46.085 \ kg\)

The upward force that must be provided by the 3 people to support the metal plate is calculated as follows;

\(F_n = mg\\\\F_n = 46.085 \times 9.8\\\\F_n = 451.633 \ N\)

The upward force exerted by the hand of each person to support the metal plate is calculated as follows;

\(F_1 = F_2 = F_3 = \frac{F_n}{3} = \frac{451.633}{3} = 150.54 \ N\).

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Answer:

2 m/s

Explanation:

Conservation of momentum:

momentum after catch = momentum of system before catch

before catch . momentum = 10 kg * 15 m/s = 150  kg-m/s

after catch   m = 65 + 10 = 75 kg

  75 kg * v = 150 kg-m/s

          v = 2 m/s

A table, horizontally, and motion. If an air table is placed horizontally and a spring is attached to the puck instead of the string, and the puck is pulled horizontally and released, the motion of the puck would be oscillatory or harmonic motion. The motion of the puck in this scenario is oscillatory or harmonic motion, as it moves back and forth horizontally around the equilibrium position due to the spring's restoring force.

Here's a step-by-step explanation:
1. The air table is placed horizontally, ensuring minimal friction between the puck and the table.
2. A spring is attached to the puck, providing a force that varies with displacement.
3. The puck is pulled horizontally, stretching the spring.
4. When the puck is released, the spring's restoring force pulls it back towards its equilibrium position.
5. As the puck reaches the equilibrium position, it has gained kinetic energy, causing it to overshoot the equilibrium point.
6. The spring then compresses, applying an opposite force that slows down the puck and reverses its direction.
7. This back-and-forth motion repeats, causing the puck to oscillate horizontally on the table.
So, The motion of the puck in this scenario is oscillatory or harmonic motion, as it moves back and forth horizontally around the equilibrium position due to the spring's restoring force.

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The tadpole swims across the pond at a velocity of 4.50 cm/s, and the tail exerts a force of 28.0 mN to overcome drag forces.

Velocity of the tadpole, v = 4.50 cm/s

Force exerted by the tail, F = 28.0 mN

To understand the relationship between force, velocity, and drag, we can consider the following equation:

F = k * v

Where:

F is the force exerted by the tail

k is a constant factor

v is the velocity of the tadpole

In this scenario, the force exerted by the tail is given as 28.0 mN, and the velocity is 4.50 cm/s. We can rearrange the equation to solve for the constant factor:

k = F / v

Substituting the given values:

k = (28.0 mN) / (4.50 cm/s)

Now, let's convert the units to a consistent form. Converting 28.0 mN to N:

\(k = (28.0 × 10^(-3) N) / (4.50 × 10^(-2) m/s)\)

Simplifying, we get:

k = 6.22 Ns/m

Therefore, the constant factor k is equal to 6.22 Ns/m.

This constant factor represents the drag coefficient, which describes the resistance of the water to the motion of the tadpole. It quantifies the relationship between the force exerted by the tail and the velocity of the tadpole. The larger the drag coefficient, the more resistance the tadpole experiences while swimming.

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Answer:

The light from a light bulb

Explanation:

The energy in a ball as it is falling is the right example of mechanical energy. Mechanical energy is the sum of kinetic and potential energy.

Mechanical energy is the energy obtained by the things in which work is performed. Mechanical energy is the energy that an item possesses as a result of its motion or location.

The light from a light bulb. and the light from the sun is a  form of light energy, the heat from a fire is an example of the thermal energy,

The energy in a ball as it is falling is the right example of mechanical energy. Because it includes the potential energy which is the virtue of the position and the kinetic energy due to the motion.

Hence option A is correct

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Answer:

Actually, the sun goes a bit down, like it's not all the way up as to summer. How I know is that you actually can go online maybe search for some videos and see proof, I don't really know how to explain it.

Explanation:

Reason #1: If you check, go out for 12 hours and see, I think the sun is a little down.

Reason #2:

The earth’s axis is tilted.

From a Brainly user of this question for more info:

The Earth is NOT farther away from the sun in USA Winter, and NOT closer to the sun in USA Summer. In 2021, we will be NEAREST to the sun on January 2, and FARTHEST from the sun on July 5 !

NEAREST to the sun next Saturday.

FARTHEST from the sun next July 5.

Answer:

Speed 5 m/s , velocity 0 m/s

Explanation:

s= d/t = 25/5 = 5 m/s

υ= Δx/Δt = 0/5 = 0 m/s

Answer: I believe the frequency of a wave is 66.6667 Hz :)

Explanation:

Answer:

True

Explanation:

It is true that. A technician can be electrocuted when working on HEVs or EVs, therefore the correct answer is option A

An EV stands for an electric vehicle. Electric vehicles (EVs) are autos that are powered totally or partially by electricity. Electric cars are extremely cost-effective to run because they have fewer moving parts to maintain and use little to no fossil fuels (petrol or diesel).

When evaluating its environmental impact, every factor must be taken into consideration. Considering that EVs have a minimal overall environmental impact, this suggests that the severity of these production emissions decreases.

Recycling is one strategy for lowering the lifespan emissions of electric vehicles. Again, incorrect assumptions can be refuted by facts.

Thus, That is accurate. The correct response is option A because a technician could electrocute themselves while working on HEVs or EVs.

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Answer:

mercury

Explanation:

The planet with the smallest mass must have the smallest gravitational pull - which is mercury, with a pull of approx. 0.38 times the Earth's gravitational pull.

moon closest to sun: Total solar
moon farthest from sun: Total lunar
moon next to farthest: partial eclipse
Last moon: Penumbral

Explanation:

Hope this helps

Answer:

a) zero.

Explanation:

If the charge of an atom is neutral, then that means it has neither a negative charge nor a positive charge. So, it would have a charge of 0.

Hope this helps!

Wiggins explains the fact of the lack of racialized explanations of athletic performance in the early 20th century, with respect to the dominant ideologies at the time.

During this time, segregation and discrimination were justified in many parts of society since it was widely believed that people of different races had inherent and unchangeable distinctions in their physical and mental skills. Sports, on the other hand, placed more emphasis on individual effort and training than on innate physical or mental qualities, hence there was less emphasis on race-based explanations of achievement. In other words, in the early 20th century, sports were seen as a meritocracy, where success was based on one's individual abilities and hard work, rather than one's race.

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Answer:

1270 J

Explanation:

Recall that the mechanical energy of a system is the addition of the Potential energy and the Kinetic energy at any given time.

As the skier descends, potential energy is converted into kinetic energy, but the total mechanical energy should remain the same.

We see that it is not the case, so that difference is what has gone into thermal energy;  19500 J - 18230 J = 1270 J

Answer:

I don't know why you are asking me?

Answer:

The answer is B.

Explanation:

They are in control of the experiment, they can change it the variables to better help the experiment.

Answer:

b

Explanation: its b

the answer is water vapor (vaporization is the process)

Answer:

Steam (or water vapor)

Explanation:

this is only worth 5 points not ten- uh anyways hope this helped?

The initial momentum of the ball is 15 Kgms-1.

In Physics, the term momentum is the product of mass and velocity. Momentum is a vector quantity. This implies that momentum possess both magnitude and direction.

Hence, we often write; p = mv

Where:

p = momentum

m = mass

v = velocity

The initial momentum therefore is;

p = 1.25 kg × 12 m/s = 15 Kgms-1

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Answer:

B, A, E, D, C

Explanation:

If the arrow points to the right, then the force is positive.

If the arrow points to the left, then the force is negative.

Also, remember that the force does not relate (necessarily) to the mass, so the different blocks having different masses is not an important factor in this problem.

Let's find the force in each block.

A)

Here we have a positive force of 3N and a negative force of 1N

Then the net force (the sum of all the forces) is:

F = 3N  - 1N = 2N

B)

Here we have two positive forces, one of 1N and other that I cant see, I guess that it is 3N

Then the net force is:

F = 1N + 3N = 4N

C)

Here we have two negative forces of 2N

Then the net force is:

F = - 2N + ( - 2N) = -4N

D)

Here we have a single force of 2N that is negative, then the net force is:

F = -2N

E)

Here we have a negative force of 3N and a positive force of 2N

then the net force is:

F = -3N + 2N = -1N

Then, the order of greatest to least (from positive to negative) is:

B, A, E, D, C

Answer:

A=4

B=3

c=2

D=1

Explanation:

since the person moving in opposite direction so displacement =distance in east/west - distance in west/east

Answer: goin at a constant rate

Explanation: goes through 0,0

The final velocities of both blocks are 0.95 m/s and 0.31 m/s respectively.

Mass of Block 1, m1 = 1.00 kg

Initial velocity of block 1, u1 = 2.50 m/s

Mass of Block 2, m2 = 5.00 kg

Initial velocity of block 2, u2 = 0.75 m/s

Both blocks move in the same direction and collide elastically. Final velocities of both blocks to be determined.

Using conservation of momentum:

Initial momentum = Final momentum

m1u1 + m2u2 = m1v1 + m2v2

m1u1 + m2u2 = (m1 + m2) V....(1)

Using conservation of energy, for an elastic collision:

Total kinetic energy before collision = Total kinetic energy after collision

1/2 m1 u1² + 1/2 m2 u2² = 1/2 m1 v1² + 1/2 m2 v2²....(2)

Solving equations (1) and (2) to obtain the final velocities:

v1 = (m1 u1 + m2 u2) / (m1 + m2)v2 = (2 m1 u1 + (m2 - m1) u2) / (m1 + m2)

Substituting the given values,

m1 = 1.00 kg,

u1 = 2.50 m/s,

m2 = 5.00 kg,

u2 = 0.75 m/s

Final velocity of Block 1,

v1= (1.00 kg x 2.50 m/s + 5.00 kg x 0.75 m/s) / (1.00 kg + 5.00 kg)= 0.95 m/s (East)

Final velocity of Block 2,

v2 = (2 x 1.00 kg x 2.50 m/s + (5.00 kg - 1.00 kg) x 0.75 m/s) / (1.00 kg + 5.00 kg)= 0.31 m/s (East)

Thus, the final velocity of block 1 is 0.95 m/s (East) and the final velocity of block 2 is 0.31 m/s (East).

Hence, the final velocities of both blocks are 0.95 m/s and 0.31 m/s respectively.

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"The term used for the distance between corresponding points of adjacent waves is wavelength."

The peak of the wave is the location where displacement is at its greatest in a wave motion, while the trough of the wave is the location where displacement is at its lowest.

The wavelength of a wave is the distance between its two consecutive crests and troughs.

The relationship between a wave's frequency and velocity can be used to describe wavelength.

We can quantify certain aspects of any wave called wave properties. Amplitude, wavelength, frequency, time, and velocity are some of these characteristics. It is the distance, typically measured in metres, between two equivalent points on adjacent waves. The distance between two consecutive crests can be used to calculate a transverse wave's wavelength.

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Answer:

A. Cochlear region

Explanation:

The cochlea is a hollow, spiral-shaped bone found in the inner ear that plays a key role in the sense of hearing and participates in the process of auditory transduction. Sound waves are transduced into electrical impulses that the brain can interpret as individual frequencies of sound.

Cone of confusion refers to the region of positions in space where all the sounds produce the same time and level (intensity) differences. The correct answer is C. Cone of confusion.

The cone of confusion is a region in space where all the sounds produce the same time and level (intensity) differences.

When flying over a navigational beacon (like a VOR), there is a zone of indeterminism where the receiver's capacity to determine direction outputs a random direction because there is no direction to the beacon, resulting in a spinning direction indicator display. also describes flying over a magnetic pole and how that affects a magnetic compass.

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Batteries often convert chemical energy directly to electrical energy.

From the experiment, the constructed conclusion was that;

When energy from a battery is added to water, two streams of gas bubbles is said to be  produced. Then a lit match is put into  trapped gas from these two sources, one pops and the other glows brighter.

The study was to test the  flammability of gases produced by providing energy to water with electricity.

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Answer: Yes it is true according o newton third law of motion

What is Newton Third Law of motion ?

--According to Newton's third law of motion, every action has an equal and opposite reaction.

--These two forces act on two different bodies.

-- Example,

1-  while swimming, you push the water backward. The water, in turn, pushes you forward.

--Similarly, while walking, you push the ground backward.

-- The ground then exerts a reaction force on you in the forward direction.

What is Newton Second Law of motion ?

--Newton's second law of motion states that “Force is equal to the rate of change of momentum.

--For a constant mass, force equals mass times acceleration.

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