Physics Middle School

What must be the initial velocity of a rocket that accelerates for 10.2 seconds at 5.31 m/s2 and covers 3912 m?

A. 276 m
B. 356 m/s
C. 107 m/s
D. 384 m/s

Answers

Answer 1

Answer: B

Explanation: 3912=10.2v +1/2(5.31)(10.2)^2 -> v≈ 356.45 (B)

Related Questions

A chemical __ _ is a written method of representing the

changes that occur in a chemical reaction.

Answers

Answer:

chemical equation

Explanation:

The general form of a chemical equation is: Reactants → Products. The reactants in a chemical equation are the substances that begin the reaction, and the products are the substances that are produced in the reaction

Psychological researchers study genetics in order to better understand the
that contributes to certain behaviors.
D
biology
neurology
O psychology
physiology

Answers

Answer: A

Biology

Explanation:

Psychological researchers study genetics in order to better understand the biological factors that contribute to certain human behaviour.

Because bodies with a particular genetic code are related in some certain behavioral forms and actions such as thought, feelings, attitude e.t.c

How have scientists played an important role in history?
A. Scientists control most governments in the world.
B. Scientific discoveries have changed the world.
C. Most political decisions are made by scientists.
D. Historians are mostly scientists.

Answers

Answer:

B

Explanation:

B makes the most sense in my opinion. because different discoveries have influenced many factors of the world

Answer: B.

Explanation:

A scientific discovery that has changed the world is Edward Jenner’s vaccine against the smallpox. His vaccine has been further modified to combat other diseases.

pls hit the thx button and mark me brainliest if this helped :)

what is the frequency of a ocean wave that is traveling at a speed of 45 m/s if it has a wavelength of 3 meters? please show work

Answers

Answer:

15 miles per hour

Explanation:

45/3=15

Answer:

15 Hz or Hertz

Explanation:

To find the frequency of a wave, divide the velocity by the wavelength.

f=velocity/wavelength

We know the ocean wave is traveling at 45 meters per second, and it has a wavelength of 3 meters. Therefore, the velocity is 45 m/s and the wavelength is 3 m.

velocity=45

wavelength=3

Substitute these values into the formula.

f=45/3

Divide 45 by 3

f=15

Add appropriate units. Frequency uses Hertz or Hz.

f=15 Hertz

The frequency of the ocean wave is 15 Hertz.

NEED HELP ASAP!!!!!!!!!!!!!!!!1
Tricep extensions work which of the following muscles:
Biceps
Soleus
Triceps
all of the above

Answers

Answer: Its biceps

Explanation: the extension of the triceps are the biceps.

What two charges could increase electrical force between objects

Answers

Answer:

From Coulomb’s Law of electrostatics the force of attraction or repulsion between two charged bodies is inversely proportional to the square of the distance between their two centers.

If the distance between them is doubled then the force is one-fourth of the original force.

If the distance between them is halved then the force is four times than the original force.

Explanation:

What is the actual depth of rainfall shown in this rain gauge?
A.20 cm

B.30 cm

C.1 cm

D.10 cm

Answers

Answer:

The answer is D.

Explanation:

As shown in the picture, the measuring tube is collecting 10 cm of rain.

Answer:

D. 10cm

Explanation:

If you look closely, you can see the water is at the 10cm mark.

WILL GIVE BRAINIEST AWARD TO CORRECT
Explain why gamma rays are the most dangerous of all electromagnetic waves.

Answers

Answer:

The extremely high energy of gamma rays allows them to penetrate just about anything. They can even pass through bones and teeth. This makes gamma rays very dangerous. They can destroy living cells, produce gene mutations, and cause cancer

The extremely high energy of gamma rays allows them to penetrate just about anything. They can even pass through bones and teeth. This makes gamma rays very dangerous. They can destroy living cells, produce gene mutations, and cause cancer.

Order the steps to describe how information is sent. A signal is produced. A signal is seen, heard, or used. Radio waves are modulated and amplified. Radio waves are amplified and demodulated.

Answers

Answer:

A signal is produced.

Radio waves are modulated and amplified.

Radio waves are amplified and demodulated.

A signal is seen, heard, or used.

Explanation:

Communication is the method of transmitting information between two or more participants. A radio communication network is a set of static and wireless radio equipment developed to facilitate an entity by enabling particular modes of communication such as one-to-many and one-to-one communication. Radio waves are being used to transmit information spatially from the sender to receiver, by modulating the radio signal in the transmitter. The above steps explains the loop of the radio communication system.

Answer:

A signal is produced- 1

A signal is seen, heard, or used- 4

Radio waves are modulated and amplified- 2

Radio waves are amplified and demodulated- 3

Explanation:

got is correct on edge 2020

Other Questions
9 m11 m6 m4 mFind the area of this figure. PLEASE HELP WILL GIVE BRAINLIEST Tell the slope and y-intercept of the graph of this linear equation -3x + 2y = 8(the slope is a fraction) nQuestion 41 ptsCholesterol is made by the liver. It is a precursor to sex hormones and vitaminD. It is also a part of our cell membranes. Cholesterol isnot an essential nutrientan essential nutrientO it depends on your medical conditionsO is essential to only vegansNext >< Previous pls help me for brainliest The temperature of the air in a valley begins to increase after the sun comes up and heats the valley floor. What willhappen to the velocity of sound in this valley?-The velocity will increase-The veocity will decrease-The velocity will not change-The velocity will drop to zero. Please answer this correctly what is the slant height for given pyramid to the nearest to the whole unit?A 7 cmB 5 cmC 9 cmD 8 cm Find the area of the shape shown below.242N.2units Select all that apply.SELECT ALL THAT APPLY. Which of the following took steps to control the power of corporations?the governmentlabor unionsPresident Rooseveltmonopolies What is the solution set of the equation 3x^2 =48 What is f(5)-8-118 What were the "gripping beasts?"a. what the Vikings were called, because they were warriorsb. the intertwined animals carved on the bow and stern of viking boatsC.the Viking weaponsd. none of the abovePlease select the best answer from the choices provided When a 1.0 M KCl solution is electrolyzed using silver electrodes, a precipitate forms at the anode. Explain this result please. You accept a job as an environmental engineer that pays a salary of $45,000 in the first year. After the first year, your salary increases by 3.5% per year.Write a rule giving your salary for your nth year of employment.a ( n ) = ______ Three different companies each purchased trucks on January 1, 2018, for $62,000. Each truck was expected to last four years or 250,000 miles. Salvage value was estimated to be $2,000. All three trucks were driven 80,000 miles in 2018, 55,000 miles in 2019, 51,000 miles in 2020, and 70,000 miles in 2021. Each of the three companies earned $53,000 of cash revenue during each of the four years. Company A uses straight-line depreciation, company B uses double-declining-balance depreciation, and company C uses units-of-production depreciation. Answer each of the following questions. Ignore the effects of income taxes.Calculate the net income for 2021? (Round "Per Unit Cost" to 3 decimal places.) How is the circulation of a fetus different from the circulation of a baby?A. The fetus has blood with no oxygen in it.B. The fetus does not pump blood throughout its body.C. The fetus does not use its lungs to bring oxygen to the blood.ENESTEOD. The fetus breathes carbon dioxide instead of oxygen. A city government would like to reduce injuries in the community. Which steps can be taken? Check all that apply.increase the number of employees who repair roads and sidewalksinstall pedestrian bridges over roadwaysdecrease lighting along walking trailsbuild more protected bike lanes and chirping crosswalk signalsextend the hours that public pools are open during the summerintroDonePro AGDELL Are these any instance when you misbehaved online?How do you think should you behave now that you have learned netiquette and proper behaviour on the world wide web? What is the factorization of the trinomial below?x^3- 12x^2 + 35x WILL VOTE MOST BRAINLIEST Which of the following explains why the inner planets are different than the outer planets?A) Due to the greater inertia of the dust particles, the dust remained close to the sun to form the inner planets leaving gases to form the outer planets.B) The lighter gases boiled off of the protoplanets closest to the sun, leaving dust and metals behind to form the inner planets.C) Due to the greater momentum of the gas particles, the gas particles flew farther away from the sun than dust and metals to form the outer planets, leaving dust and metals to form the inner planets.