IF SOMEONE CAN ANSWER THESE QUESTIONS ILL GIVE BRAINLIEST!!!!! Pls

To find the mass of an object hanging 12.6 m above the surface of the earth is approximately 22.04 kg.

The mass of an object can be determined using the formula for gravitational potential energy (G.P.E). G.P.E. is calculated using the formula G.P.E. = mgh, where m is the mass in kg, g is the acceleration due to gravity which is approximately 10 m/s², and h is the height in meters.

To find the mass, rearrange the formula to: m = G.P.E. / (g * h).

Substituting the given values into the formula, we have m = 2778.3 J / (10 m/s² * 12.6 m). Solving this equation gives us the mass of the object.

Calculating the mass, m

= 2778.3 J / (10 m/s² * 12.6 m)

m ≈ 22.04 kg

To calculate the mass of an object that weighs 1,225 N on Earth, divide the weight by the acceleration due to gravity (9.80 m/s²). The mass is equal to 125 kg.

To calculate the mass of an object that weighs 1,225 N on Earth, we can use the equation w = mg, where w is the weight, m is the mass, and g is the acceleration due to gravity (9.80 m/s² on Earth).

Rearranging the equation, we have m = w/g. Substituting the given values, m = 1,225 N / 9.80 m/s² = 125 kg.

Therefore, the mass of the object is 125 kg.

https://brainly.com/question/28122305

#SPJ12

Reverberation is why your voice sounds different in a gym compared to a living room; hard surfaces in a gym increase reverberation time, creating echoes that can make sound seem mushy, while softer surfaces in a living room shorten it, providing clearer sound quality.

Reverberation explains why your voice sounds different in a gym compared to your living room due to the unique acoustic properties of different environments. In a gymnasium, the hard surfaces result in a longer reverberation time as sound waves bounce off and overlap each other, creating what is known as the comb effect. This often leads to mushy or muddled musical sounds and makes speech more difficult to understand due to the multiple echoes. Conversely, a living room typically has softer surfaces and objects that absorb sound, resulting in shorter reverberation times and a clearer, more intimate sound quality.

Reverberation provides us with clues about the size of a space and its material composition, affecting our perception of sound. For instance, large concert halls are designed with optimal reverberation times to enhance music, while spaces intended for speech, like lecture halls, aim for shorter reverberation to maintain speech clarity. Adjusting the level of reverberation can also add fullness to recorded voices or create the illusion of a different performance space.

Answer: A) reactants

Explanation:

Reactants are the substances that have chemical reactions when they are combined, whereas the product is what comes from the reactants’ chemical reactions.

Answer:

A)reactants

Explanation:

I think the correct answer is reactants because the substances that go into a chemical reaction are called reactants.

Sorry if it's wrong:(

Answer:

C

Explanation:

Answer:

No

Explanation:

The density of the oil is different from the density of the water.

Answer:

B

Explanation:

Gravity is an invisible force, and so is magnetism and electricity. Friction involves the rubbing of things together to create energy.

Answer:

B

Explanation:

Friction is the force that you feel whenever you try to drag an object across a surface. Like a box along the floor, or your hand across a counter-top. It requires two objects to be in direct contact with each other (don't worry about air friction AKA "drag").

Answer:

12.8 Watts

Explanation:

P = VI

P = (2 V) (6.4 A)

P = 12.8 W

The power rating of the bulb will be 12.8 Watts. Power rating is an efficiency perameter.

The maximum power input allowed to pass through a piece of equipment is known as the equipment's power rating.

The given data in the problem is;

V is the voltage supply=  2V s

I is the current = 6.4A.

P is the power rating of the bulb =?

The power rating of the bulb is found as;

[tex]\rm P = VI \\\\ \rm P = 2 \times 6.4 \\\\ \rm P =12.8 \ Watt[/tex]

Hence the power rating of the bulb will be 12.8 Watts.

To learn more about the power rating refer to the link;

https://brainly.com/question/13787703

Answer:

Fossil fuels come from the ground and are millions of years old

Explanation:

Fossil fuels come from the ground. i can infer and tell because most fossils are in the ground and also fossils are millions of years old. Fossil fuels are hydrocarbons, primarily coal, fuel oil or natural gas, and is from the remains of dead plants and animals. In  dialogue, the term fossil fuel also includes hydrocarbon-containing natural resources that are not derived from animal or plant sources.

Answer:

Frequency

Explanation:

Answer:

[tex]3.54* 10^{22}[/tex] N

Explanation:

Using the formula you gave:

[tex]F_g = \frac{6.67*10^{-11}*2.0*10^{30}*5.97^{24} }{(1.5*10^{11})^2 }[/tex]

Answer:

87,500 J

Explanation:

Power = energy / time

3,500.0 W = E / 25.0 s

E = 87,500 J

Answer:

T = 4000 N

Explanation:

We have,

Mass of an elevator, m = 500 kg

It is moving downward with an acceleration of [tex]2\ m/s^2[/tex]. It is required to find the  tension force of the cable on the elevator. We know that when the elevator is moving downward, the net force on it is given by :

[tex]F=m(g-a)[/tex]

g is acceleration due to gravity

[tex]F=500\times (10-2)\\\\F=4000\ N[/tex]

So, the tension force of the cable on the elevator is 4000 N.

Answer:

225

Explanation:

The period of rotation of Venus is 243 Earth days, which is longer than the 225 days it takes the planet to orbit the sun. Moreover, the rotation is in the opposite direction from other planets in the solar system.

Answer:

225

Explanation:

Answer:

7.5 m/s

Explanation:

The center of the string is a single point following projectile motion. At the top of its trajectory, the vertical component of the velocity is 0 m/s.  In the horizontal direction, assuming negligible air resistance, the acceleration is 0 m/s², so the horizontal velocity is the same as the x component of the initial velocity.  Therefore, the net speed of the center of the string is equal to the initial horizontal component of the velocity.

v = vₓ = 15 m/s cos 60° = 7.5 m/s

At the top of the trajectory, the speed of the center of the string is the same as the initial horizontal velocity, which is 7.5 m/s. This is because the vertical component of the velocity becomes zero while the horizontal component remains unchanged. Thus, the speed of the center of the string is 7.5 m/s.

To determine the speed of the center of the string at the top of its trajectory, we need to consider the initial conditions and the influence of gravity on the projectile motion.

The toy is thrown with an initial speed of 15 m/s at an angle of 60 degrees above the horizontal. We can break this down into horizontal and vertical components:

At the top of the trajectory, the vertical component of the velocity becomes zero since the toy momentarily stops moving upwards and is about to start descending. The horizontal component, however, remains unchanged as there is no horizontal acceleration acting on it (ignoring air resistance).

Therefore, at the top of the trajectory, the speed of the center of the string is the horizontal component of the initial velocity: 7.5 m/s.

Answer:

https://brainly.com/question/10256321

Answer:

the armature and commutator  

Explanation:

Answer:

The correct answer is the third

Force equals mass times acceleration

Explanation:

Newton's second law says that force equals mass times the acceleration of the body

            F = m a

This is the most used way to solve problems

The correct answer is the third

Newton's third law states that forces always work in pairs, by action and reaction

Newton's first law states that an object per macerate with constant speed unless some force modifies this state.

4.5 Joules. I think it'd be 4.41, but when you round it, it's 4.5.

Final answer:

The work done by gravity on a 50g pine cone falling from a 9 m high tree is 4.41 Joules, as calculated using the gravitational potential energy formula.

Explanation:

The amount of work done by gravity on a falling object is equal to the change in the object's gravitational potential energy (GPE). The GPE formula is GPE = mgh, where m is the mass in kilograms, g is the acceleration due to gravity (9.8 m/s² on Earth), and h is the height in meters. For a pine cone with a mass of 50g (which is 0.05 kg) falling from a height of 9 m, the work done by gravity is:

GPE = mgh = (0.05 kg) x (9.8 m/s²) x (9 m) = 4.41 Joules

Thus, 4.41 Joules of work is done by gravity when the pine cone falls from the top of a 9 m high tree.

Answer:

foam but thats what i heard from other people

Explanation:

Answer:

If you want to make your insulation even more effective at blocking and absorbing noise that passes through walls or ceilings, you can add a few finishing touches before replacing the drywall. As I’ve explained in my article on the best wall soundproofing, you can add a layer of MLV over the insulation .

Explanation:

Answer:

Explanation:

the bit the most kinetic energy is where it is going down

the bit with the most potential is the curb

The places with the most potential are the places at the highest points of the track (i.e., right behind where the coaster is situated, and towards the end of the loop). These places have the highest stored energy, that can be used.

The places with the most kinetic is where the low points of the track is at. In this case, it will be where the coaster is situated, and the latter half of the loop.

Answer:

A. 1.4 * 10^(12) N/C

Explanation:

Parameters given:

Distance of charge from electric field, r = 0.0050 m

Charge, q = 0.0040 C

The electric field at a point, r, away from a charge, q, is given as:

E = (k * q) / r²

Where k = Coulomb's constant

E = (9 * 10^9 * 0.004) / (0.005²)

E = 1440 * 10^9 = 1.4 * 10^(12) N/C

The magnitude of the electric field at a point 0.005 m from the charge is 1.4 * 10^(12) N/C.

Answer:

Explanation:

Given that,

A charge Q = 0.004 C

We want to find the electric field at distance r = 0.005m

K = 9 × 10^9 Nm²/C²

Electric field at a point is given as

E = kQ / r²

E = 9 × 10^9 × 0.004 / 0.005²

E = 1.44 × 10¹² N/C

So, the magnitude of the electric field at 0.005m is 1.44 × 10¹² N/C.

Answer:

most amplitude and compression .

Explanation:

D.

A current can be produced in a coil of wire as a magnet is being thrust though the  coil.

Brainliest, please?

Answer:

The general theory of relativity (or general relativity for short) is a major building block of modern physics. It explains gravity based on the way space can 'curve', or, to put it more accurately, it associates the force of gravity with the changing geometry of space-time.

Answer:

no

In particle physics, a magnetic monopole is a hypothetical elementary particle that is an isolated magnet with only one magnetic pole (a north pole without a south pole or vice versa). A magnetic monopole would have a net "magnetic charge".

Answer:

B

Explanation:

Electromagnetic spectrum includes visible light which we see all the time reflecting off objects to give them colours, mechanical waves like sound require something to move in, its the reason why people say you can't scream in space because space is a giant vacuum. No not the kind you use to clean up the mess you made from breakfast. The kind that has no air. So sound can be heard on earth as it is not a vacuum, air moves freely and transfers sounds vibrations all around you to be absorbed by walls and other stuff in comes in contact with.

Extra information:

Sound travels further in water because the molecules are closer together meaning that transferring the energy is easier. This is how Blue wales can communicate from hundreds of miles away.

Answer:

when electrons move around they create heat. the freer the molecules the more hear they can produce