kj

This page lists questions and answers that were posted by visitors named kj.

Questions

The following questions were asked by visitors named kj.

The diameters of Earth and the Sun are approximately 1.3 107 m and 1.4 109 m respectively, and the average Sun-Earth distance is 1.5 1011 m. Consider a scale model of the solar system, where Earth is represented by a peppercorn 2.3 mm in diameter. Calcula...

A vector has components Ax = 44 m and Ay = 30 m. Find the length of the vector vector A and the angle it makes with the x axis. in meters and in degrees

In SI units, acceleration is measured in units of meters per second squared (m/s2). Which of the following combinations of units can also be used to measure acceleration? km/s2 cm/s miles per hour m3/(mm2 · s2) cm/s2 miles/(minutes)2

A jogger maintains a speed of 2.5 m/s for 188 m until he encounters a stoplight, and he abruptly stops and waits 27 s for the light to change. He then resumes his exercise and maintains a speed of 3.6 m/s for the remaining 51 m to his home. (a) What was h...

The figure below shows the acceleration as a function of time for an object. (a) If the object starts from rest at t = 0, what is the velocity of the object as a function of time? for 0s < t < 10s v(t) = m/s for 10s < t < 26s v(t) = m/s (b) If the object...

In SI units, force is measured in newtons, with 1 N = 1 kg · m/s2. Which of the following combinations of units can also be used to measure force? 1 kg · m4/(s2 · cm3) g · cm2/s kg · miles/(minutes)2 g · cm/s2 g · m/s

A rock is dropped from a very tall tower. If it takes 4.1 s for the rock to reach the ground, what is the height of the tower?

You are a secret agent and find that you have been pushed out of an airplane without a parachute. Fortunately, you are wearing a large overcoat (as secret agents often do). Thinking quickly, you are able to spread out and hold the overcoat so that you inc...

A cable attached to a block of mass 11 kg pulls the block along a horizontal floor at a constant velocity. If the tension in the cable is 5.3 N, what is the coefficient of kinetic friction between the block and the floor?

Calculate the terminal velocity for a baseball. A baseball's diameter is approximately d = 0.073 m, and its mass is m = 0.146 kg. Express your answer in meters per second and miles per hour. (Assume a drag coefficient of 1 and air density of 1.3 kg/m3.) _...

Two ropes are attached to a skater as sketched in the figure below and exert forces on her as shown. Find the magnitude and direction of the total force exerted by the ropes on the skater if θ1 = 32.0° and θ2 = 53.0°. what is the magnitude and direction (...

The three forces shown in the figure below act on a particle (with F1 = 48.0 N, F2 = 58.0 N, θ1 = 63.0°, and θ2 = 27.0°). If the particle is in translational equilibrium, find F3, the magnitude of force 3 and the angle θ3. F3 = 1 N θ3 = 2° (counterclockwi...

A flag of mass 2.2 kg is supported by a single rope as shown in the figure below. A strong horizontal wind exerts a force of 10 N on the flag. Find the tension in the rope and the angle θ the rope makes with the horizontal. Tension = N θ = °

Two crates are connected by a massless rope that passes over a pulley as shown in the figure below. If the crates have mass 32 kg and 80 kg, find their acceleration. If the system begins at rest, with the more massive crate a distance 11 m above the floor...

can someone show me how step by step to convert this problem 45 mi/h=ft/s using dimensional analysis?Thanks.kj

Victoria you helped me with the last problem can you help me again with this one please? 26cm/s=m/min. Convert this using the dimensional analysis.Thank-you.kj

Can anyone show me step by step how to solve this problem? 26cm/s = m/min convert this problem using dimensional analysis.kj

Can someone show me how to solve this problem step by step?Here is the problem, 26cm/s= m/min,how to solve it by convert rate suing dimensional analysis.

Can anyone show me step by step how to solve this problem? 26cm/s = m/min convert this problem using dimensional analysis.What is the answer and how did you get it?Thanks,kj

One afternoon, a couple walks five-eighths of the way around a circular lake, the radius of which is 1.45 km. They start at the west side of the lake and head due south to begin with. (a) What is the distance they travel?

Most proteins (do or don't) pass through the plasma membrane? Explain? Substances that dissolve in (lipids or water) can more readily pass across the plasma membrane. Explain Ions can cross the plasma membrane more easily if they have the (same or opposit...

Peter is playing a game where a ten-sided die is rolled. Four sides of the die have the number 10, three sides of the die have the number 5, two sides of the die have the number 25, and one side of the die has the number 27. What is the expected value of...

Suppose you earned $50,000 last year, and inflation is at 5%. You receive a salary increase of $2,000. Explain your increase salary in nominal and real terms. Did you receive an increase?

(w+9)^3+56=0 write were w i a real number write answer in simplified radical form write b^2/3 as a radical expression

predict the product of the following: a.) Ca + H + OH => b.) Pb(NO3)2 + Cu =>

how long will it take to make $9944. dollars at 1.25 interest when i already have $7500. I have to make line graph of each year.

A brass ball weighs 270gram in air and when it was immersed in water,it displaced 30 ml of water .how much will the ball weigh in water?

The scale for a map says that 1 cm is equal to 25 miles. Jennifer measures the distance between two cities as 4.5 cm. How far apart are the cities?

A display case of toy rings are marked 5 for $1. If Zach wants to buy 50 toy rings, how much will Zach spend (not including tax)?

I really don't understand please help with answers and explanations. Follow the instructions for the following inequalities. 1. 4<7 Multiply both sides by 7 , then by 6, then by 3, then by 10 2. 11>-2 Add 5 to both sides, then add 3, then add (-4) 3. -4<-...

a student answered 86 problems on a test correctly and recieved a grade 98%.How many problems were on the test, if all the problems were worth the same number of points? (Round to the Nearest whole number.)

if a sweater is 34.15 and the markdown on the sweater is 45 percent what was the original cost of the sweater

23. You use a line of best fit for a set of data to make a prediction about an unknown value. The correlation coefficient for your data set is -0.833. Can you be confident that your predicted value will be reasonably close to the actual value? why or why...

Sammy uses 6.3 pints of white paint and blue paint to paint her bedroom walls. 3 5 of this amount is white paint, and the rest is blue paint. How many pints of blue paint did she use to paint her bedroom walls?

A tag on a pair of pants in a local store says "30% off the Original Price." Which number could be multiplied by the original price to find the final cost of the pants?

its the first time ive ever made a poem and i dont know anything about making a poem so if anybody could help i'd appreciate it, this is what ive got so far My mar lunar, losing my ambitions She’s dry, so alone My only sacrifice being of tears My mar luna...

use the the excerpt from butterflies are dissepawring in ohio heres what that means for insects everywhere to answer the question why does the author talk

What is a hypothesis? A. a statement that summarizes the results of an experiment B. a question that cannot be scientifically tested C. a statement that can be tested through a scientific investigation D. a description of the steps involved in an experime...

Since the beginning of time, some people have believed that the Earth is flat. Beginning around 300 B.C., however, some began to wonder if the Earth is actually spherical in shape. Those that favored the flat Earth theory made the following observations:...

Which of the following methods could be used in a scientific investigation? collecting relevant evidence or data using logic and reason when making explanations and conclusions using imagination when creating hypotheses and designing experiments building...

Greg wants to build a tree house. He wants the house to last for a long time and to not be broken down by rain, snow, and wind. Which of the following would help Greg to choose a durable building material? A. Build one model of his tree house out of one t...

When developing a question for a scientific inquiry, the question will ideally A. identify variables. B. be measurable. C. not just simply ask why. D. all of these

Which of the following statements is true regarding scientific hypotheses? A. A testable hypothesis is valuable, even if evidence shows that it is false. B. Every hypothesis is valuable, whether or not it is testable. C. There are no valuable hypotheses....

Evaluate (34)−2⋅(45)−2. 9

Select all of the irrational numbers. 8–√ π 4–√ −38 5–√ 7.805

What is the sum? (7.25 × 105) + (5.2 × 103) 7.198 × 105 7.302 × 105 1.245 × 103 3.77 × 103

Plot 18−−√ and 4.856 on the number line. A number line with 4.856 plotted between four and 4.5, and the square root of 18 plotted between 4.5 and five. A number line with the square root of 18 plotted between four and 4.5, and 4.856 plotted between 4.5 an...

Select all of the solutions to the equation x2 = 64. −32 −8 −4 4 8 32

The diameter of the moon is 3,474,000 meters. Which is the best estimate of the diameter of the moon? 3 × 105 3 × 106 4 × 107 4 × 108

Apply the Law of Exponents to write an equivalent expression of −4x3y2 ⋅ 3x5y6. x y8

Which number is an irrational number? 49−−√ −24√ π 0.78¯¯¯¯

Select all of the expressions equivalent to (m + m)(−4.2m). 2m(−4.2m) −4.2m3 −2.2m2 4.2m2 + 4.2m2 −4.2m2 + (−4.2m2) −8.4m2

Dejah is comparing two numbers shown in scientific notation on her calculator. The first number was displayed as 7.156E25 and the second number was displayed as 3.498E–10. How can Dejah compare the two numbers?

Which expression is equivalent to the given expression? (−14x)(12x−34) −112x2+34x 18x2−316x 112x2−34x −18x2+316x

Which expression is equivalent to the given expression? (−14x)(12x−34) −112x2+34x 18x2−316x 112x2−34x −18x2+316x

The expression 27 −−−√3⋅27−−√3 gives the area of the base of a cube with a volume of 27 cubic inches. What is the area of the base, in square inches?

What number makes the equation true? (1.7 × 108) × (4 × 10n) = (6.8 × 1014) n = Choose...

Select all of the expressions equivalent to (−12)3+ (24+9)−−−−−−−√. 92 112 −18+25−−√ 18+25−−√ −18+5 18+5

Which list orders the numbers from least to greatest? 19−−√,4.3,3.6¯,13−−√,π π,3.6¯,4.3,13−−√,19−−√ 19−−√,3.6¯,4.3,13−−√,π π,13−−√,3.6¯,4.3,19−−√

The mass of a human cell is 0.000000000001 kilogram. What is the mass of a human cell in scientific notation, in kilograms? × 10

What is the common monomial factor of the expression 16m2n2 − 12mn5? 4m2n 4mn2 8m2n 8mn2

What is the solution to the equation x3 = 125?

Use factoring to write three different equivalent expressions for 12 m Superscript 5 Baseline plus 60 m. Question content area bottom Part 1 Select all that apply. A.12 m left parenthesis m Superscript 4 Baseline plus 5 right parenthesis 12 m left parenth...

wo students factor 8 f Superscript 5 Baseline minus 80 f Superscript 4. Which student is correct? Explain. Student A Student B 8 f Superscript 4 Baseline left parenthesis f minus 10 right parenthesis negative 8 f Superscript 4 Baseline left parenthesis n...

Completely factor the expression negative three fifths xn cubed minus five ninths x Superscript 5 Baseline n Superscript 7 .

How is 8.145 × 109 written in standard form? 81,450 8,145,000 8,145,000,000 8,145,000,000,000

Factor the expression 6a3 − 21a5 completely. 3a (2a − a )

Multiply the expressions. −0.6y(4.5 − 2.8y) = Choose... y2 + Choose... y

Select all of the rational numbers. π 9–√ 12−−√ −23 0.1¯ 0.781

The diameter of the Milky Way is 2 × 1020 meters. The radius of Earth is 6.37 × 106 meters. About how many times as great is the diameter of the Milky Way than the radius of Earth?

Select all of the expressions equivalent to c6d6 . (cd−1)6 c12d18c2d3 c8d3c2d9 c6d−6 c−6d6 (c−1d)−6

The distance from Earth to the sun is about 9.3 × 107 miles. The distance from Jupiter to the sun is about 4.84 × 108 miles. How much closer is the Earth to the sun than Jupiter to the sun? 3.91 × 107 miles 4.46 × 107 miles 3.91 × 108 miles 4.46 × 108 mil...

What is the solution of the equation x2 = 36? x = Choose...

Factor the expression 12x4y3 + 18x3y4 completely.

Completely factor the expression negative one third cg Superscript 6 Baseline minus five eighths c cubed g Superscript 8 . Question content area bottom Part 1 negative one third cg Superscript 6 Baseline minus five eighths c cubed g Superscript 8 equals e...

Completely factor 225 c Superscript 4 Baseline d plus 135 c Superscript 8 Baseline d squared. How can you check your work? Question content area bottom Part 1 225 c Superscript 4 Baseline d plus 135 c Superscript 8 Baseline d squaredequals enter your res...

Completely factor 24 y Superscript 5 Baseline z squared plus 42 y Superscript 4 Baseline z Superscript 4 Baseline minus 12 y Superscript 6 Baseline z. Question content area bottom Part 1 24 y Superscript 5 Baseline z squared plus 42 y Superscript 4 Baseli...

Morgan is conducting an experiment to determine which type of container traps the most heat. Morgan hypothesizes that Aluminum Foil will trap the most heat. Below are some portions of her experiment. Materials 3 shoe boxes Timer Aluminum Foil Plastic Wrap...

Johannes Kepler improved our understanding of the orbits of the planets around the Sun. He made extensive calculations based on his own and others' observations and concluded that the planets follow an elliptical path around the Sun, rather than a circula...

Paul’s class investigated the effects of friction on the motion of a toy car. Using ramps with different surfaces, students determined the amount of time, in seconds (s), for the toy cars to reach the bottom of each ramp. All variables were controlled exc...

Sir William Bragg, a physicist who used x-rays to examine crystal structures, stated; "The most important thing in science is not so much to obtain new facts as to discover new ways of thinking about them." When analyzing data, a researcher may find that...

A climatologist wants to explain why a particular region experiences more hurricanes than another. She analyzes historical weather data, including temperature, wind patterns, and ocean currents. Which method is the climatologist using to develop a scienti...

A physicist at a research laboratory reports a startling new discovery. However, other scientists are unable to reproduce the results of the experiment. Which statement provides the best explanation for the inaccurate results? The hypothesis needed to be...

Eric is studying the motion of particles in different states of matter. In his report, he will describe particle motion in solids, liquids and gases. Which of the following accurately describes the motion of particles in a solid? The particles are not in...

While watching a video in class, Jennifer observed that astronauts moved large containers around easily on the Moon; however, she remembered that the same containers seemed more difficult to move when they were training on Earth. Which of the following be...

Several groups of students were given a 2 gram (g) cube of iron and a 4 g cube of iron. They examined three physical properties of each cube: density, magnetism, and electrical conductivity. Which of the following best explains the students’ findings? The...

Copper, aluminum, and zinc are three types of metals. Which of the following physical properties do they have in common? conductivity melting point boiling point magnetism

Raphael is conducting an experiment in his science class. He is testing how different brands of glue will affect the viscosity of slime. He uses equal amounts of Loctite, Tombow and Krazy Glue to formulate his slime. He also makes a batch of slime with El...

Emiko is conducting a research project in a laboratory at the university. The laboratory is studying the effect of temperature on the motion of particles. She notices that particle motion and temperature of matter are related. Which of the following descr...

From his observations, Aristotle believed Earth was round and that the planets revolved around it. Approximately 1,500 years later, Nicolaus Copernicus evaluated astronomical data and suggested that Earth revolved around the Sun and that the planets' orbi...

Eric wants to perform an investigation on red blood cells, but before beginning his investigation, he wants to learn more about them. Which of the following is an appropriate reference material that Eric could use to learn more about red blood cells? A. a...

George is interested in spiders. He wants to study why spiders spin webs, so he comes up with the following question: Do spiderwebs help spiders catch prey? George's question is A. not a valid scientific question because it asks about an opinion. B. not a...

Which of the following is true about cannabis?

Which of the following is true about cannabis? 1. all cannabis products make users feel high 2. vaping cannabis is safer than vaping nicotine 3.THC-free cannabis products do not have any cannabinoids 4. cannabis today has more thc than cannabis a few deca...

Which type of reproduction is shown in the diagram? A. fertilization B. mammal reproduction C. asexual reproduction D. sexual reproduction

A chemist adds two substances together in a beaker. When he combines the substances, a solid substance is formed. He filters the solid substance and measures its mass on an electronic balance. When the chemist measures the mass of the substance, he is A....

What are the elements highlighted in green classified as? A. nonmetals B. chemicals C. metalloids D. metals

Answers

The following answers were posted by visitors named kj.

a) d=m/v d= (1.13*10^-3)/1 d= 1.13e-3 g/cm^3

Hello i don't know i was trying to look for that to

unconditioned stimuli is men attracted to women

Select the rebuttal statement that BEST refutes the viewpoint in section one. A) It is necessary to oversee the athletes involved in mixed martial arts. B) It is unnecessary to oversee the athletes involved in mixed martial arts. C) It is necessary for at...

thank you so much

I want to know the answer

You save money in a shoebox under your bed. At first, you had $16.25 in the box. Each week you put your $3 in the shoebox. You spend $4.25 on ice cream each week. In how many weeks will your money run out?

What about 2 and 3 how will I go about answering those?

17 20 what did yall put

thank you so much i have a test coming up and im trying to make a study gide

mrs sue the best

PsyDAG is you cant answer the question then dont say anything at all!

Thanks none ya they were right

The answer is d

For people who are trying to get away with castle learning, the answer is increasing. F*T/m = change in momentum < denominator increases, lesser value as a result.