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Katy

Questions (265)

Which sector of the economy includes factory workers who manufacture automobiles
1. 1 answer
2. 147 views
find the limit using l'hospital's rulelim x-->negative infinity (x ln(1-1/x)
1. 1 answer
2. 842 views
find the slope of the tangent line to the parabola y=x^2+3x at the point (-1, -2)using lim x-->a (f(x)-f(a))/x-a
1. 1 answer
2. 558 views
What happens when production is inside the production possibilities curve?The production has been made more efficient, and
1. 2 answers
2. 980 views
Which of the following experiments confirms that light behaves in a wave like manner?When light has it's frequency adjusted, the
1. 1 answer
2. 803 views
A tuning fork is used to tune a piano key. The tuning fork has a set frequency of 455 Hz. The beat frequency is measured at 21
1. 1 answer
2. 692 views
On a summer day, you feel the warmth of electromagnetic radiation from the sun. Which statement explains the type of model that
1. 1 answer
2. 1,020 views
Which of the following are common forms of energy released by electrons dropping from heightened energy levels?Light, Heat
1. 3 answers
2. 541 views
When scientists make models of dynamic physical events, they will normally choose to have values that may change as time
1. 0 answers
2. 498 views
A physicist is creating a computational model of a falling person before and after opening a parachute. What boundary conditions
1. 1 answer
2. 670 views
When scientists make models of dynamic physical events, they will normally choose to have values that may change as time
1. 13 answers
2. 1,404 views
A 10-volt battery is connected to a circuit with two resistors, R1 and R2, in parallel. If R1 is greater than R2, what does
1. 1 answer
2. 1,572 views
Three resistors are placed in series. They have the following resistances: R1 = 20 ohms, R2 = 20 ohms, R3 = 10 ohms. What
1. 0 answers
2. 683 views
Which material provides resistance to the flow of electrons?salt crystals saltwater silver copper***
1. 1 answer
2. 636 views
What is the value and the direction of an electric field at a distance of 2.5 m from a +1 nC charge?approximately 145 V/m
1. 4 answers
2. 2,418 views
How would the electrostatic force change if Coulomb's law included a negative sign?It would depend on the magnitude of the
1. 1 answer
2. 1,531 views
One particle has a negative charge, while another particle is neutral. Which statement describes the electrostatic force between
1. 1 answer
2. 1,000 views
How is the attractive electrostatic force between a proton and an electron indicated in Coulomb's law?the sum of the charges
1. 4 answers
2. 1,670 views
What is the mass of m2 when m1=860 kg, the centers of the masses are 2.4 meters apart, and the magnitude of the gravitational
1. 1 answer
2. 1,168 views
The mass of an electron is 9.109×10−31 kg, and the magnitude of the charge of an electron is 1.602×10−19 C. What is the
1. 2 answers
2. 1,407 views
Two charges q1 and q2exert a 90 N electrostatic force onto each other when they are 1 m apart. They are moved further away to a
1. 1 answer
2. 729 views
Two masses m1 and m2 exert a gravitational force of 12 N onto each other when they are 6 m apart.What will the gravitational
1. 5 answers
2. 1,071 views
The electrostatic force between two charges is originally F. Which expression represents the new electrostatic force between the
1. 1 answer
2. 1,389 views
A drone car with a mass of 1000 kg is travelling down the road with a speed of 12 m/s. It collides with another drone car half
1. 1 answer
2. 428 views
What happens to the gravitation force between two objects that are 15 m apart, when one of them moves 3 m closer?It decreases by
1. 1 answer
2. 1,993 views
By what factor does the gravitational force between two objects increase if one object doubles in mass and the distance between
1. 4 answers
2. 2,995 views
In which case would there be an electrostatic force between two objects?two positively charged objects**** two neutral objects a
1. 2 answers
2. 988 views
Which law gives the force between two objects that is related to their mass and distance?Kepler's law Coulomb's law Newton's
1. 4 answers
2. 1,949 views
Some students conduct an experiment to prove conservation of momentum. They use two objects that collide. Measurements are taken
1. 1 answer
2. 1,285 views
Which is an example of an object with a momentum of zero?an empty canoe sitting on the bank of a river**** a car rolling down a
1. 3 answers
2. 1,049 views
Which is always true in a closed system?Mass is not conserved. Momentum is conserved.*** Velocity is constant. Acceleration is
1. 3 answers
2. 4,523 views
Whenever you push an object across a frictional surface, it starts out taking a lot of force to push to get the object moving.
1. 1 answer
2. 466 views
If an object is placed under a force of 20 N, it accelerates at a rate of 5 m/s^2. If the force is increased to 55N, what is the
1. 5 answers
2. 677 views
If an object is placed under a force of 20 N, it accelerates at a rate of 5 m/s^2. If the force is increased to 55 N, what is
1. 0 answers
2. 216 views
A group of students conducted several trials of an experiment to study Newton’s second law of motion. They concluded that
1. 1 answer
2. 1,456 views
A net force of 0.7 N is applied on a body. What happens to the acceleration of the body in a second trial if half of the net
1. 3 answers
2. 813 views
Two balls are released from the same height on the moon. They both reach the ground at the same time. Which statement is correct
1. 1 answer
2. 737 views
The same motor is used in rockets with different masses. The rockets have different accelerations. According to Newton’s
1. 14 answers
2. 6,565 views
Several motorboats with the same mass are used in an experiment. The forces of the different motors versus their accelerations
1. 2 answers
2. 1,089 views
Different amounts of force are applied to the same boat over several trials, and the acceleration is measured. In a graph of
1. 1 answer
2. 1,267 views
Please check my answers, and i'm unsure of the third problem so if you can please explain.Which statement about friction is
1. 1 answer
2. 919 views
Please check my answersA hammer is used to hit a nail into a board. Which statement is correct about the forces at play between
1. 6 answers
2. 3,598 views
A smartphone company receives shipments of smartphones from three factories, labelled, 1, 2 and 3. Twenty-five percent of
1. 0 answers
2. 1,205 views
Christion and Jessica want to build a pool in their backyard. However they also have dogs so they do not want the pool to take
1. 1 answer
2. 455 views
The table defines a quadratic functionWhat is the average rate of change between x=-1 and x=1 x|y -1|5 0|1 1|-1 3|1 Please
1. 3 answers
2. 1,662 views
Please check my answers !Which effect of temperature rise causes a feedback resulting in a rise in global temperatures? more
1. 1 answer
2. 1,982 views
I'm unsure of what a ℉ 31/45 is of a Temperature Range. I'm not sure whether it means hot or cold. But i think it means cold.
1. 1 answer
2. 379 views
Amazon charges a flat rate of $129 (yearly) for Amazon Prime and $7.99 for each HD movie rental. Youtube Red charges a flat rate
1. 1 answer
2. 549 views
1. Identify the graph(s) whose line may have the given slope.Then, describe your strategy for matching the graphs to the given
1. 2 answers
2. 450 views
Simplify:(3cd^4)(-2c^2)(5cd^3) A: 6c^4d^7 B: -30c^4d^7 C: 6c^2d^7 D: -30c^2d^7 I am completely clueless on what the answer would
1. 3 answers
2. 526 views
In which type of symbiotic relationship is one organism helped while another organism is neither benefitted nor harmed?A:
1. 47 answers
2. 12,390 views
-2x+5(x+3)=-9Can someone help me solve this step by step?
1. 1 answer
2. 356 views
Simplify the expression (n^4)^8A. n^(48) B. n^(32) C. n^(12) D. n^4
1. 30 answers
2. 12,903 views
6n-4+5n=73This is my last one thank u. :)
1. 1 answer
2. 353 views
7+8x=-33How can I solve this? with steps please.
1. 1 answer
2. 624 views
1.)which of the following is an irrational number?6.444..... 21/square root(16) 5π/π **** btw these are pi signs π <---
1. 2 answers
2. 874 views
1.)Which of the following statements is true?Positive numbers are always rational numbers. Negative numbers are always
1. 2 answers
2. 1,616 views
Which operation should be performed first in the expression?5+7÷7x4-17 Addition Subtraction Multiplication Division***** **Is
1. 5 answers
2. 4,135 views
Write and solve an equation that represents the following situation35 people paid a total of 245 for admission to a local soccer
1. 2 answers
2. 733 views
When Jonell checked the temperature in the morning, he saw that it was -4F. Late that afternoon, the temperature was 15F. Select
1. 1 answer
2. 1,404 views
Question 2w=10, what is the answer to w+(w-12÷2^2•3)•7 73 66 23 17* Question 3 14-3•4÷6 14 12* 6 3 Question 4---which
1. 5 answers
2. 937 views
Evaluate 5(14-2^3)+8÷226* 34 44 56
1. 3 answers
2. 1,070 views
In the state of Campana, during the Fall season, it rains 75% of the time and it is sunny 25% of the time (these figures are
1. 0 answers
2. 538 views
A rain gutter is made from sheets of aluminum that are 11 inches wide. As shown in the figure the edges are turned up to form
1. 1 answer
2. 1,855 views
Please help , I only need the second part of the questionBetty picks 4 random marbles from a bag containing 3 white , 4 yellow
1. 1 answer
2. 6,216 views
Calculate the solubility of ZnCO3 in a buffer solution with a pH of 9.83 and Ksp of 1.2x10^-10
1. 1 answer
2. 1,501 views
Calculate the ZnCO3 in a buffer solution with a pH of 9.83
1. 1 answer
2. 527 views
Show that if f(x) is continuous and u(x) and v(x) are differentiable functions, then:d/dx ∫_v(x)^u(x)
1. 1 answer
2. 444 views
How do I figure out the upper and lower bounds for a riemann sum?This question I'm working on tells me to assume: Δx=2π/n and
1. 1 answer
2. 465 views
Let f(x)= -3x+4 and g(x)= -x^2 +4x+1. Find and simplifyf(-3)
1. 1 answer
2. 452 views
A department store is offering a coupon for 26% off for any purchases over $100.How much would you spend for a $100 purchase?
1. 2 answers
2. 961 views
As you ride a bicycle, the distance between your foot and the pavement varies sinusoidally with the horizontal distance the
1. 1 answer
2. 1,653 views
The temperature T(t) varies sinusoidally on a certain day in December. The minimum temperature is 35 degrees Fahrenheit at
1. 5 answers
2. 2,631 views
mike can drive his car 33 miles with one gallon of gas does he need to drive 15000 miles?
1. 1 answer
2. 526 views
Is this statement true? Give an example to support your answer. "If two numbers are divisible by another number then their
1. 1 answer
2. 633 views
What is likely a major of weakness of empires?They lack recourses. They conduct far-flung trade. They make enemies. This one
1. 3 answers
2. 375 views
How has Aztec culture survived in Mexico?The Mexican military uses Aztec fighting tactics. Mexico still uses the Aztec calendar.
1. 4 answers
2. 1,005 views
Sara and Jenny can both do flips in the air. The ratio of the number of flips Sara can do to the number of flips Jenny can do is
1. 10 answers
2. 3,112 views
Julia spent 1/3 of her money. Then she lost 1/2 of the rest. She now has $10 left. How much did she get for her birthday?
1. 2 answers
2. 629 views
Can someone please help me. I am not sure to work the following matrices.If A^4 = -3 4 -4 5 and A^5= 4 -5 5 -6 What is A? Can
1. 1 answer
2. 358 views
Aggregate demand management policies are designed most directly to?
1. 1 answer
2. 496 views
Can someone help me out with this! Thank you in advance :)Frank’s Fruit Stand sells fresh fruit as well as fruit dipped in
1. 2 answers
2. 604 views
According to double-entry accounting, which of the following is a correct statement regarding transactions?
1. 1 answer
2. 453 views
5mL of a solution A (unknown concentration) was transferred into sic 25mL volumetric flask. The following volumes of a standard
1. 4 answers
2. 738 views
Any help is greatly appreciated5mL of a solution A (unknown concentration) was transferred into sic 25mL volumetric flask. The
1. 6 answers
2. 868 views
Consider a general reaction where a ligand L and a metal ion Mn+ form a complex with m number of ligands (L) coordinated to each
1. 0 answers
2. 675 views
Which of the following statements is true?A. There is more water on Earth now than there was millions of years ago. B. There is
1. 18 answers
2. 3,464 views
A protostar has a high enough___to become a star.A. volume B. mass C. temperature D. brightness Is the answer B? Thanks in
1. 6 answers
2. 832 views
Hi! I need help with this question. Thanks!Directions: To solve these problems, you need to find the inverses of these 2x2
1. 1 answer
2. 438 views
Monica had a saving a account which paid her an interest rate of 4%. After she had this account for 12 years, she had received
1. 22 answers
2. 951 views
How do you know if a word problem question is asking for simple interest or compound interest?P.s. I already know the formula
1. 4 answers
2. 868 views
How would you make 1L of a buffer of pH=11 starting with 15g of base, C5H11N:. At you disposal are 1M HCl and 1M NaOH, pH meter,
1. 1 answer
2. 474 views
How could a poll tax or a literacy test has been used to prevent someone from voting?The Civil war Amendments Before. After
1. 20 answers
2. 1,235 views
1.why were American Indians asked to moved?2. Did the u.s government have the right to ask American Indians to move? 3.what were
1. 11 answers
2. 664 views
A car traveling 85km/h slows down at a constant 0.52m/s2 just by "letting up on the gas." Calculate the distance the car coasts
1. 3 answers
2. 1,423 views
The speed of sound in air at sea level at 32 degrees Fahrenheit is 1088 ft/s. If that represents only 22.04% of the speed of
1. 1 answer
2. 898 views
Estimate 12 1/2% of 57
1. 1 answer
2. 362 views
ARE THE FOLLOWING EQUATIONS INVERSES?y=x^4-7 and y=∜ x+7
1. 0 answers
2. 400 views
The Mongols have a terrible reputation in history as pillagers who destroyed all that met their path. How does this depiction of
1. 1 answer
2. 540 views
Flask A contains 100 milliliters of a solution with a pH of 5. After you add 100 milliliters of a solution from Flask B, the pH
1. 1 answer
2. 2,927 views

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