Physics College

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

Answers

Answer 1

Answer:

hello me

Explanation:

help me thisanswer

Related Questions

help PLEASEEEEEEEEEEE

Answers

The answer is a

Explanation : a

the answer for this one is A

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

what is a transformer

Answers

A person who has transformed into something or an object.

Answer:

An electrical box that regulates all the electricity for an area.

if a car travels 125 miles in 2.5 hours, what was the cars average speed over the 2.5 hours?

Answers

Answer:

50 miles per hour

Explanation:

125/2.5 which equals to 50

Answer:

50 miles per hour

Explanation:

125 divided by 2.5 = 50

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

ᥬ᭄

Photons with the highest frequency have the lowest _____.
A. wavelength
B. speed
C. color
D. energy

Answers

Answer:

a wavelength

Explanation:

Two-fifths of a number is 23.2, find
the number.
A. 116.0
B. 58.0
C. 46.4
D. 29.0
E. 14.5
11

Answers

Considering the definition of an equation and the way to solve it, the correct answer is option B.: the number is 58.

Definition of equation

An equation is an algebraic equality in which letters (unknowns) appear with unknown value in addition to certain known data.

An equation has:

The members, which are each of the expressions that appear on both sides of the equal sign.The terms, which are the addends that form the members of an equation.

The solution of an equation is to find the value of the unknown or unknowns that verify the equality. To solve an equation, keep in mind:

When a value that is adding, when passing to the other member of the equation, it will subtract.If a value you are subtracting goes to the other side of the equation by adding.When a value you are dividing goes to another side of the equation, it will multiply whatever is on the other side.If a value is multiplying it passes to the other side of the equation, it will pass by dividing everything on the other side.

This case

Being "x" the number you want to find and knowing that two-fifths of a number is 23.2, the equation in this case is:

2/5x= 23.2

Solving:

x= 23.2 ÷ 2/5

x= 58

Finally, the number is 58.

Learn more about equations:

brainly.com/question/20796784

brainly.com/question/565552

brainly.com/question/4983716

#SPJ1

In A. C. motor capacitor is used
p.Can dicouly [BPKIHS 2000
to reduce ripples b. to decrease A. C.
c. to increase A. C. d. to decrease D. C.
a.
34

Answers

Answer:

d. to decrease D. C.

Explanation:

d. to decrease D. C.

A car comes to a stop six seconds after the driver applies the brakes. While the brakes are on, the following velocities are recorded:
Time since brakes applied (sec) 0 2 4 6
Velocity (ft/s) 87 44 16 0
Give lower and upper estimates (using all of the available data) for the distance the car traveled after the brakes were applied.

Answers

Answer:

Explanation:

deceleration during first 2 s = (87 - 44) / 2 =21.5 m /s²

deceleration during next 2 s = (44 - 16) / 2 =14 m /s²

deceleration during last 2 s = (16 - 0) / 2 = 8 m /s²

If we assume the acceleration to be uniform during 3 readings

distance travelled during first 2 s

v² - u² = 2 a s

87² - 44² = 2 x 21.5 x s

s = 7569 - 1936 / 43

= 176 m

distance travelled during next 2 s

44² - 16² = 2 x 14 x s

s = 1936 - 256 / 28

= 60 m

distance travelled during last 2 s

16² - 0² = 2 x 8 x s

s = 256 / 16

= 16 m

Total distance travelled = 176 + 60 + 16 = 252 m

If we assume the acceleration as non- uniform , we first calculate average acceleration as follows .

average acceleration = (87 - 0)/ 6 = 14.5 m /s²

v² - u² = 2 a s

87² - 0² = 2 x 14.5 x s

s = 7569 / 29

= 261 m

Hence lower estimate of distance travelled = 252 m ; upper estimate of distance travelled = 261 m .

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

Learn more:

brainly.com/question/14197404

When oxygen in water interacts with iron it results in O A rust forming O B) a chemical change C) oxidation O D) all of the above

Answers

correct answer is D, all of the above. Rust forming is a chemical change which is classified as oxidation

1-Autotrophic plants are also called
2-The ____ guards the opening and closing of stomata
3-_______ is an example of a nitrogen fixing bacterium
4______ plants has the biggest and the heaviest flower
5-a tissue called _____bcarries water and minerals from the root to the root to the leaves of plants

Answers

Answer:

1. Producers

2. cell (guards)

3. Rhizobium

4. Rafflesia Arnoldii

5. Xylem

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

Answers

Radiation or Conduction?

Answer:

the answer is C

Explanation:

A 200kg car is driving at 20m/s down the road when he sees a red light. He slows to a stop.

The car's initial momentum is ___kg m/s

The car's final momentum is ___kg m/s

The car's impulse is
___kg m/s

Answers

Answer:

Initial Momentum - 4000 kg*m/s

Final Momentum - 0 kg*m/s

Impulse: -4000 kg*m/s

Explanation:

The equation for momentum is P = mv

Initial Momentum

200kg * 20m/s = 4000 kg*m/s

Final Momentum

200kg * 0m/s = 0kg*m/s

Impulse = ΔP

Pfinal - Pintial = Impulse

0-4000 = -4000 kg*m/s

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

Do all the cells look the same in a filament? If there is a difference, describe
how they are different.

Answers

Answer:

All cells in filamentous algae look the same except for the spores. Explanation:

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

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

A house is advertised as having 1460 square feet under roof. What is the area of this house in square meters?

Answers

Answer: 131.92 m

Explanation: The problem give above is a conversion problem. To convert any measurement from one unit to another, we need a relation for the original units to that of the desired unit. This relation is called the conversion factor. It is used by multiplying or dividing the factor depending on what is the unit of the original measurement. For this case, we need to convert from ft^2 to m^2. The conversion factor would be 1 foot is equal to 0.3048 m. So, we would be getting the square of the factor and then multiply to the original value.

1420 ft^2 ( 0.3048 m / 1 ft)^2 = 131.92 m

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.

Learn more : https://brainly.com/question/17561092?referrer=searchResults

Who serves as the presiding officer of the Senate?

Answers

Who serves as the presiding officer of the Senate?

[tex]{ \bf{ \underbrace{Answer :}}}[/tex]

The [tex]\sf\purple{Vice\:President}[/tex] of the United States serves as the presiding officer of the Senate.

At present, [tex]\sf\red{Kamala\:Harris}[/tex] is the president of the Senate.

[tex]\bold{ \green{ \star{ \orange{Hope\:it\:helps.}}}}⋆[/tex]

Two identical thermally insulated spherical tanks, A and B, are connected by a valve. Initially tank A contains 20mol of an ideal diatomic gas, tank B is evacuated, and the valve is closed.
If the valve is opened and the gas expands isothermally fromA to B, what is the change in the entropy of the gas?

Answers

Answer:

Explanation:

Volume of gas is doubled isothermally . Let the temperature of the gas be T .Work done by the gas

W = 2.303 nRT log 2 V / V

Since expansion is isothermal , Δ E = 0

Q = ΔE + W

Q = W

Q = 2.303 nRT log 2 V / V

Q / T = 2.303 n R log 2

Change in entropy = ΔS = Q / T = 2.303 n R log 2

= 2.303 x 20 x 8.3 x .3010 J T⁻¹.

= 115 J T⁻¹.

The required change in the entropy of the gas is 115 J/K.

Given data:

The number of moles of diatomic gas in tank A is, n = 20 mol.

The expansion takes place isothermally, which means the volume is doubled at the constant temperature. Therefore, work done during the isothermal expansion is,

W = 2.303 nRT log 2 V / V

Since expansion is isothermal , Δ E = 0. Then by using the first law of thermodynamics as,

Q = ΔE + W

Q = W

Q = 2.303 nRT log 2 V / V

Q / T = 2.303 n R log 2

Also, we that the expression for the change in Entropy is,

ΔS = Q / T = 2.303 n R log 2

Solving as,

ΔS = 2.303 x 20 x 8.3 x .3010

ΔS = 115 J/K

Thus, we can conclude that the required change in the entropy of the gas is 115 J/K.

Learn more about the entropy change here:

https://brainly.com/question/1301642

When a species has no members left that are alive

Answers

Answer:

it means that species is extinct.

Explanation:

have a good day :)

I think the answer is extinct, since there are no member left that are alive of that kind of species.

The maximum allowable resistance for an underwater cable is one hundredth of an ohm per
meter and the resistivity of copper is 1.54 x 10-80m.
a) Calculate the smallest cross sectional area of copper cable that could be used.

Answers

Answer:

A = 1.54 x 10⁻⁵ m² = 15.4 mm²

Explanation:

The resistance of a wire can be given by the following formula:

[tex]R = \frac{\rho L}{A}\\\\A = \frac{\rho L}{R} = \frac{\rho}{\frac{R}{L} }[/tex]

where,

A = smallest cross-sectional area = ?

ρ = resistivity of copper = 1.54 x 10⁻⁸ Ωm

[tex]\frac{R}{L}[/tex] = resistance per unit length of wire = 0.001 Ω/m

Therefore,

[tex]A = \frac{1.54\ x\ 10^{-8}\ \Omega m}{0.001\ \Omega/m}[/tex]

A = 1.54 x 10⁻⁵ m² = 15.4 mm²

what must happen for a electromagnet to have a magnetic field

Answers

By simply wrapping wire that has an electrical current running through it around a nail, you can make an electromagnet. When the electric current moves through a wire, it makes a magnetic field. If you coil the wire around and around, it will make the magnetic force stronger, but it will still be pretty weak.

Two band members are marching toward each other beginning from opposite end zone goal lines (100 yards apart). One band member is playing a picolo and marching at 5 ft/s and the other is playing a sousaphone and marching at 1 ft/s. At what yard line do they meet?

Answers

Answer:

Explanation:

answer is 16.6666 which is equal to 17

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

Answers

Answer:

Explanation:

The answer must be 3

Draw Aufbua diagram of sodium ion

Answers

Answer:

Aufbau diagram of sodium ion:

2s²,2p⁶,3s¹

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

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

Other Questions

How are trade-offs and opportunitycosts related? a stack of 20 identical boxes is 140cm tall Stefan takes 3 boxes of the top how tall Is the stack now Please help me!I will give brainly The length of rectangle PQRS is expressed as 2x+7. The width of rectangle PQRS is expressed as 3x4. Which expression describes the area of rectangle PQRS?A.6x^2B.6x^2-29x-28C.6x^2-15D.6x^2+13x-28 HELP PLSSS NOWW!!!!!!! how much corn syrup should be added to water to make 200 mL of a 10% by volume solution Express 80 as the product of its prime factors.Write the prime factors in ascending order. A researcher is crossing two organisms that are heterozygous for three Mendelian, unlinked traits (XxYyZz). What is the fraction of offspring that are predicted to have the genotype xxyyzz? Xavier needs to bike a minimum of 80 miles this week for his training. If he has already biked 14 miles this week, then how many miles should he bike on each of the 6 remaining days this week? A. x 12B. x 11C. x 10D. x 10 The sportswear department had net sales of $550,000 last year, with markdowns of $33,000. This year plan sales are$575,000. If the buyer is planning the same percent of markdowns this year as last year, what is the plan markdown dollarsfor this year? 1. The prism below measures 6 inches x 3 inches x 10 inches. A diagonalline, d, is drawn inside the prism. Find the length of the diagonal, d. *HELP!!!! HELP ME PLEASEEEEEEEEEE In 1860 the economy of _ was deeply dependent on Cotton.NorthSouth Boenisch Corporation produces and sells a single product with the following characteristics: The company is currently selling 8,000 units per month. Fixed expenses are $406,000 per month. Management is considering using a new component that would increase the unit variable cost by $3. Since the new component would increase the features of the company's product, the marketing manager predicts that monthly sales would increase by 400 units. What should be the overall effect on the company's monthly net operating income of this change Which of the following is a true biconditional statement?OA. I walk one mile to the store if and only if the store is 5280 feetaway.B. A person practices yoga if and only the person is relaxed.c. I wear my raincoat if and only if it is raining.D. An athlete wears a hat if and only if the athlete is on a baseballteam. The titration of HCl with NaOH is an example of:A. a weak acid-weak base titration,B. a weak acid-strong base titration.c. a strong acid-strong base titration.D. a strong acid-weak base titration. 5. What best describes the way the author ends the essay?A. by threatening the editorB. with a call to actionC. by telling a short storyD. with a personal attack Let's say your name is Gilligan, you've survived a shipwreck and you're stranded on a desert island. You happen to have been stranded with a medical doctor that has a limited stock of medical supplies. One of your shipmates is in desperate need of a blood transfusion but doesn't know his blood type. You do know your blood type. How could you type his blood with your knowledge and limited medical supplies? HELP ME PLEASE I NEED HELP Identify at least three rivers and their location in Asia.

please help meeeee :((((((((((​

Answers

Related Questions

Answers

Answers

Answers

Answers

Answers

Answers

Answers

Answers

Answers

Answers

Answers

Answers

Answers

Answers

Answers

Answers

Answers

Answers

Answers

Answers

Answers

Answers

Answers

Answers

Answers

Answers

Answers

Answers

Answers

Answers

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