12. 2007: The figure below show two identical trollbys with loads A and B. The
loads are identical in shape and size.
D
Given that the density of A is greater than that of B, explain why the
trolley in figure 3 (in) is more stable

Answers

Answer 1

Answer:

you need to provide a figure that came with the problem.

Related Questions

Kendra wonders how she ended up with brown hair, hazel eyes, and is right handed. Using the terms amino acids, genes, proteins, and traits, explain how she ended up with these features.

Answers

ᥬ᭄

ᥬ᭄ᥬ᭄

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Sodium and ice a physical or chemical reaction

Answers

Answer:

physical change uwu owo hope this helps you uwu silly goose

It’s physical reaction

its un1) It is unofficial, but a strong rumor that the world will end in two years' time due to the arrival of a huge comet and its subsequent impact with Earth. You have two years to live, to get the most out of life. How would you react? What would you do? Discuss.

Answers

Answer:

I'll try my utmost best to get the most out of life...I'd do the things have always wanted to do

Sometimes it might get to me knowing fully well that in two years time the world will end but i will shake it off because the time i spend thinking about it...It will be enough to make some memories.

Hope this help anyways

a 60 kg pupil runs for 600m in 1 minute uniformly calculate kinetic energy

Answers

velocity = traveled distance ÷ time of the traveled distance is seconds

velocity = 600 ÷ 60

velocity = 10 m/s

_________________________________

Kinetic Energy = 1/2 × mass × ( velocity )^2

KE = 1/2 × 60 × ( 10 )^2

KE = 30 × 100

KE = 3000 j

How do you make a mirages?

Answers

Answer: when the ground is very hot and the air is cool. The hot ground warms a layer of air just above the ground. When the light moves through the cold air and into the layer of hot air it is refracted (bent). A layer of very warm air near the ground refracts the light from the sky nearly into a U-shaped bend.

Explanation:

Who is your greatest scientist, and what was his or her achievement? « brainliest assured»

Answers

Answer:

My greatest scientist is David Baltimore.

Explanation:

David Baltimore is an American biologist, university administrator, and 1975 Nobel laureate in Physiology or Medicine. He is currently President Emeritus and Distinguished Professor of Biology at the California Institute of Technology, where he served as president from 1997 to 2006.

Hope I helped! Ask me anything if you have any questions. Brainiest plz!♥ Hope you make a 100%. Have a nice morning! -Amelia♥

Which of the following is NOT a mental process?
Select one:
a. Walking on the beach
b. Solving the math problem
c. Thinking of the correct answer
d. Choosing the right answer

Answers

Answer:

Its A. Walking on the beach

Answer:

walking on a bench is the answer

How many significant figures are in the number 54,100?

Answers

Answer:

Explanation:

The answer must be 3

I get feel rushed a lot of times when I’m not even being rushed and it gives me headaches and I feel like I’m breathing hard. Does this mean I have anxiety?

Answers

That could be a symptom but I recommend going to your doctor just to be on the safe side!

No i think u have asthma not anxiety

1. A ford engine is provided with 80,000 W power by burning its fuel. The engine produces a kinetic energy of 96 kJ for 20 seconds before its cut out.
a. Calculate the output power by the engine in watts.
b. What is the efficiency of the engine?
c. Why is there a considerable difference in the power input and output?

Answers

Answer: a) 4800 W b) 6 % c) most of the energy of fuel is converted to heat in combustion engine

Explanation: a) Power P = W/t = 96 000 J / 20 s = 4800 W

b) efficiency η = P(putput) / P(intake) = 4800 W / 80000 W = 0,06

The Hall effect is to be used to find the sign of charge carriers in a semiconductor sample. The probe is placed between the poles of a magnet so that magnetic field is pointed up. A current is passed through a rectangular sample placed horizontally. As current is passed through the sample in the east direction, the north side of the sample is found to be at a higher potential than the south side. Make a sketch of the situation, then decide if the number density of charge carriers is positively or negatively charged.

Answers

Answer:

the sign of these carriers is POSITIVE

Explanation:

In the effect, he found the charge carriers that were subjected to two forces, one electric and the other magnetic.

F = F_e + F_m = q E + q v x B

bold indicates vectors

The electric field goes to the east, therefore the current also has this direction, the vector product of the velocity of the charge carriers towards the east and the magnetic field upwards, using the right hand rule a magnetic force is created towards the north if the carriers are positive.

In the exercise they indicate that the north side has a higher potential than the south side, therefore there must be an accumulation of carriers on this side that create an electric field (Hall) that is put to the magnetic force until reaching equilibrium when the total force is zero.

Therefore the sign of these carriers is POSITIVE

Assume that the roller coaster track has no friction, which means there's no heat transfer from
the track to the surroundings. How does lack of friction affect the energy of the roller coaster
System?

Answers

Answer:

No energy leaves the system if there’s no friction between the cars and the tracks.

Explanation:

The lack of friction affects the energy of the roller coaster system. Because no energy leaves the system if there is no friction between the cars and the rails.

What is the friction force?

It is a type of opposition force acting on the surface of the body that tries to oppose the motion of the body. its unit is Newton (N).

Gravitational potential and kinetic energy, which are the roller coaster's usable energies, are converted to heat energy by friction.

A roller coaster is affected by air friction and resistance since it is in the air, and this creates a force that opposes the movement of the cart.

A portion of the energy is lost as a result of friction caused by the brakes, wind drag on the train, and friction between the wheels and the rails.

Since there is no friction on the roller coaster track, there is no heat transmission from the track to the environment.

The roller coaster system's energy is impacted by the absence of friction. Because if there is no friction between the automobiles and the rails, no energy exits the system.

Hence, lack of friction affects the energy of the roller coaster system.

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what makes molecules move. A. covection. B. Radiation. C. Thermal or heat. D. conduction.

Answers

Radiation or Conduction?

Answer:

the answer is C

Explanation:

8 A car accelerates at a rate of 10m/s
for a time of 4s and it reaches a speed of 52m/s . calculate the initial value

Answers

Answer:

From the First Law of Motion

Vf = Vi + at

"It reaches a speed of 52m/s" meaning the Final speed Vf=52

a(acceleration)=10m/s²

t=4s

Applying the formula

52=Vi + 10(4)

Vi = 52-40

Vi = 12m/s

When we experience positive "g forces", it is as if we have become...

Answers

Answer:

heavier

Explanation:

PLEASE HELP I need help bad
66. Which of the following results of correlational
studies implies that environment contributes to
the determination of IQ?
(A) Correlations are higher for identical twins
than for fraternal twins.
(B) Correlations are higher for children and their
biological parents than for children and their
adoptive parents.
(C) Correlations are higher for parents and their
children than for husbands and wives.
(D) Correlations for two children in the same
family are lower when one of the children is
adopted than when both are the biological
offspring of the parents.
(E) Correlations for children and their adoptive
parents are statistically significant and
positive.

Answers

i think the answer is B.

i believe this because the child’s brain development is proven to have changed based off separation from their biological parents, presenting a change in their environment

i hope this helps ! ♡

Correlational study involves a non-experimental study of the relationship between two variables using statistical study in the evaluation of our result.

The association between environment and IQ in the options given is best identified by the statistical significance shown in the association between children and their adoptive parent.

Correlational study involves the establishment of statistical pattern or trend using methods such as Analysis of variance. Statistical evaluation is key in establishing the outcome of a correlational study or evaluation. Since the method by which the correlation between the variables in the other options aren't stated, the best option is E.

Therefore, correlation between adoptive parent and children showing positive statistical significance implies a correlational study.

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A truck contains both hydraulic brakes (reliability 0.96) and mechanical brakes (reliability 0.99). What is the probability of stopping the truck (i) while moving at a high speed, assuming both systems must work to avoid hitting a vehicle stalled in the roadway, and (ii) while moving at a low speed, assuming either system will stop the truck in time if they function properly

Answers

Answer:

i) 0.9504

ii) 0.0452

Explanation:

Given data: reliability of hydraulic brakes= 0.96

reliability of mechanical brakes = 0.99

So the probability of stopping the truck = 0.96×0.99= 0.9504

At low speed

case: A works and B does not

= 0.96×(1-0.99) = 0.0096

case2 : B works and A does not

= 0.99×(1-0.96) = 0.0396

Therefore, probality of stopping = 0.0096+0.0396 = 0.0492

help PLEASEEEEEEEEEEE

Answers

The answer is a

Explanation : a

the answer for this one is A

This same experiment is performed on the international space station. What is the primary issue with performing this experiment in the absence of gravity

Answers

Answer:

Difference in experimental data.

Explanation:

There is difference of experimental value between the experiment that is performed on the earth and on the international space station because presence of gravity. The result of the experiment on the earth is different due to the presence of gravity that contributes in the result of the experiment as compared to international space station where no gravity is present so there is high difference of the numerical value of the result of both experiments of earth and international space station.

In a chemical reaction, substances react in a specific ratio. Chemical reactions are used to make many products, including food. For a company that carries out a chemical reaction to make a product, why would it be important to know the ratio of substances?

Answers

Answer: “Chemical equations need to be balanced in order to satisfy the law of conservation of matter, which states that in a closed system matter is neither created nor destroyed. There are some things called mole ratios, which are important because mole ratios allow you change moles of a substance to moles of another substance. The mole ratio is the magic that changes from A to B. The mole ratios come from the chemical formula or equation.”

You need to make sure you have an equal balance so that you don’t make a mistake and mess up the reaction. If anything goes minutely wrong, it may alter the substance. Knowing the ratios of substances can help to make the product as expected.

It is important to know the ratio of substances because:

Mole ratios are important because mole ratios allow you change moles of a substance to moles of another substance. The mole ratio is the magic that changes from A to B. The mole ratios come from the chemical formula or equation.The mole ratios are determined using the coefficients of the substances in the balanced chemical equation. Mole ratios are used as a means of comparison of substances in a balanced chemical equation in order to determine amounts.

Example: 2H₂ + O₂ → 2 H₂O

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after a spring is compressed 0.2 meters from its uncompressed length it exerts a 20 newton force on a 0.4 kg block resting on a horizontal frictionless surface. after it is released the block will reach a maximum velocity of
a. 2.1 m/s
b. 3.2 m/s
c. 6.3 m/s
d. 10.0 m/s
e. 100 m/s
show your work.

Answers

Answer:

Explanation:

just add

After a spring is compressed 0.2 meters from its uncompressed length, it exerts a 20 newton force on a 0.4 kg block resting on a horizontal frictionless surface. after it is released, the block will reach a maximum velocity of 3.2 m/s.

What is velocity ?

The directional speed of an item in motion, as measured by a specific unit of time and viewed from a certain point of reference, is what is referred to as velocity.

Velocity is the pace and direction of an item's movement, whereas speed is the time rate at which an object is travelling along a route. In other words, velocity is a vector, whereas speed is a scalar number.

Velocity is a unit of measurement for motion that begins in one location and moves to another. There are several practical uses for velocity, but one of the more frequent ones is figuring out how quickly you or anything in motion will go from one place to another.

Thus, option B is correct.

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“Is it true or wrong to say that an automobile at rest can be accelerating very fast? Either yes or no explain it with mathematical background

Answers

Answer:

Yes.

a = dv/dt

but v might be zero in an instant.

Take the example of a pendulum.

Acceleration is defined as the rate of change of the velocity of the body. Yes, an automobile at rest can accelerate very fast.

What is acceleration?

Acceleration is defined as the rate of change of the velocity of the body. Its unit is m/sec².It is a vector quantity. It requires both magnitudes as well as direction to define.

[tex]\rm a=\frac{dv}{dt}[/tex]

a is the acceleration of the body

dv is the change of velocity of the body

dt is the change in the time interval

The acceleration is defined as the change in velocity, and the slope of velocity is found as acceleration. It can be said that the body is at rest its velocity is zero.

The acceleration of the body can be increased when the body changes its direction. So the moment at which the body changes the direction the body is at rest after that the body can accelerate.

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Draw Aufbua diagram of sodium ion

Answers

Answer:

Aufbau diagram of sodium ion:

2s²,2p⁶,3s¹

You throw a tennis ball straight up. Air resistance can be neglected.
(a) The maximum height above your hand that the ball reaches is H. At what speed does the ball leave your hand?
(b) What is the speed of the ball when it is a height H/2 above your hand? Express your answer as a fraction of the speed at which it left your hand.
(c) At what height above your hand is the speed of the ball half as great as when it left your hand? Express your answer in terms of H.

Answers

Answer:

(a) [tex]\sqrt{2gH}[/tex]

(b) [tex]\sqrt{gH}[/tex]

Explanation:

The maximum height = H

(a) Let the speed of the ball as it leaves the hand is u.

Use third equation of motion

[tex]v^{2}=u^{2}+2as\\0 = u^{2}- 2 gH\\u=\sqrt{2 gH}[/tex]

(b) Let the speed of the ball at H/2 is v.

Use third equation of motion

[tex]v^{2}=u^{2}+2as\\v^{2} = u^{2}- 2 g\frac{H}{2}\\v^{2}=2 g H - gH = gH\\v =\sqrt{gH}[/tex]

[tex]v^{2}=u^{2}+2as\\\frac{u^{2}}{4} = u^{2}- 2 gh \\\\2 g h = \frac{3u^{2}}{4}\\h =\frac{3u^{2}}{8g}[/tex]

g You shine orange laser light that has a wavelength of 600 nm through a narrow slit. The slit forms a diffraction pattern on a distant screen that has been set up behind the slit. The first dark fringe in the diffraction pattern is 4.0 cm from the center point of the pattern. If you replace the orange laser with an unknown laser and observe that the second dark fringe of the diffraction pattern appear at 4.0 cm from the center point, what is the wavelength of the unknown laser

Answers

Answer:

λ = 3 10⁻⁷ m, UV laser

Explanation:

The diffraction phenomenon is described by the expression

a sin θ = m λ

let's use trigonometry

tan θ = y / L

as in this phenomenon the angles are small

tan θ = [tex]\frac{sin \ \theta}{cos \ \theta}[/tex] = sin θ

sin θ = y / L

we substitute

a y / L = m λ

let's apply this equation to the initial data

a 0.04 / L = 1 600 10⁻⁹

a / L = 1.5 10⁻⁵

now they tell us that we change the laser and we have y = 0.04 m for m = 2

a 0.04 / L = 2 λ

a / L = 50 λ

we solve the two expression is

1.5 10⁻⁵ = 50 λ

λ = 1.5 10⁻⁵ / 50

λ = 3 10⁻⁷ m

UV laser

After landing on an unfamiliar planet, a space explorer constructs a simple pendulum of length 48.0 cm . The explorer finds that the pendulum completes 93.0 full swing cycles in a time of 144 s . Part A What is the magnitude of the gravitational acceleration on this planet

Answers

Answer:

g = 12.22 m/s²

Explanation:

The time period of this pendulum is given as follows:

[tex]T = \frac{time\ taken}{no. of cycles}\\\\T = \frac{144\ s}{93}\\\\T = 1.55\ s[/tex]

but the formula for the time period of a simple pendulum is as follows:

[tex]T=2\pi \sqrt{\frac{l}{g}}\\[/tex]

where,

L = length of pednulum = 48 cm = 0.48 m

g = magnitude of th gravitational acceleration on this planet = ?

Therefore,

[tex]1.55\ s=2\pi \sqrt{\frac{0.48\ m}{g}}\\\\\sqrt{g} = 2\pi \sqrt{\frac{0.48\ m}{1.55\ s}}\\\\g = 3.49^{2}\\[/tex]

g = 12.22 m/s²

If a small appliance is rated at a current of 10 amps and a voltage of 120 volts,
what is the power rating?

Answers

Answer:

P=1200watts

Explanation:

Power=voltage*current

V=120v

I=10A

P=120v*10A

P=1200watts

The correct option about power rating is, “1200 V”.

What is Power?

The quantity of energy moved or transformed per unit of time is known as power, and its unit is "watt".

What are the different formulas for power?Power = Potential Difference × CurrentPower = ( Current )² × ResistancePower = ( Potential Difference )² / Resistance

How to solve this question?

We have given Potential Difference and current

So, we can use the formula which contain Potential Difference and current.

Which is,

Power = Potential Difference × Current

Power = 120 × 10 watts

Power = 1200 watts

Hence the power rating came out to be 1200 watt after solving.

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please help meeeee :((((((((((

Answers

Answer:

hello me

Explanation:

help me thisanswer

A wave that has smaller amplitude than another carries less _______

Answers

Answer:

A wave that has smaller amplitude than another carries less what

Waves that have smaller amplitude have less energy. the particles of the waves. rarefactions are far amplitude waves. Wavelength is the distance from one crest to the next crest or from one trough to the next trough.

Explanation:

Cora’s doctor suspects that she has acid reflux. He prescribes
for her.

Answers

Answer: antacids

Explanation: Excess acid secretion in the stomach often causes nausea, chest pain, and leaves a bitter taste in the mouth. Doctors perscribe antacids to neutralize the acid.

Answer: antacids

Explanation: Excess acid secretion in the stomach often causes nausea, chest pain, and leaves a bitter taste in the mouth. Doctors perscribe antacids to neutralize the acid.

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12. 2007: The figure below show two identical trollbys with loads A and B. Theloads are identical in shape and size.DGiven that the density of A is greater than that of B, explain why thetrolley in figure 3 (in) is more stable​

Answers

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12. 2007: The figure below show two identical trollbys with loads A and B. The
loads are identical in shape and size.
D
Given that the density of A is greater than that of B, explain why the
trolley in figure 3 (in) is more stable