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Tim
Questions and answers by visitors named
Tim
, page 6
Questions (992)
Limit as x approaches 0 of x(1-cosx)/t-sinx.
Confused on how to get this answer.
1 answer
358 views
The following are about an infinite region in the 1st quadrant between y=e^-x and the x-axis.
A) Find the area of the region
4 answers
2,805 views
The following are about an infinite region in the 1st quadrant between y=e^-x and the x-axis.
B)Find the volume of the solid
1 answer
471 views
It took 1800J of work to stretch a spring from its natural length of 2m to a length of 5m. Find the spring's force constant.
2 answers
510 views
A spring has a natural length of 10in. An 800lb force stretches the spring to 14in.
A. Find the force constant B. How much work
1 answer
814 views
It takes a force of 21,714lb to compress a coil spring assembly on a New York City Transit Authority subway car from its height
3 answers
1,890 views
Find the derivative of the function.
y = integral from cosx to sinx (ln(8+3v)) dv lower limit = cosx upper limit = sinx y'(x) =
3 answers
1,459 views
A ball leaves a table with an initial horizontal velocity of 2.4m/s. The height of the table is adjustable. In two runs, the
1 answer
469 views
A little girl is standing on a cliff and throws a ball straight down at a speed of 5m/s towards the ground below. How far has it
2 answers
470 views
A daredevil performs a stunt in which he jumps with his motorcycle from a horizontal cliff 10m high. What must the initial
4 answers
643 views
Suppose a patient is given 140mg of I−131, a beta emitter with a half-life of 8.0 days.
Assuming that none of the I−131 is
1 answer
945 views
Suppose a patient is given 140mg of I−131, a beta emitter with a half-life of 8.0 days.
Assuming that none of the I−131 is
1 answer
487 views
Free-energy change, ΔG∘, is related to cell potential, E∘, by the equation
ΔG∘=−nFE∘ where n is the number of moles
3 answers
1,431 views
there exists a circle with chords. the chords are congruent. their corresponding arc measurements are 80 degrees and 2x+10 solve
2 answers
532 views
A 275-gram ball bounces off a wall. The ball stays in a horizontal plane throughout the motion. The ball strikes the wall with a
2 answers
567 views
Complete and balance the reactions
A) (CH3)2NH(aq)+CH3COOH(aq)→ B) CH3CH2NH2(aq)+HBr(aq)→ C) CH3NH2(aq)+HCOOH(aq)→
3 answers
1,509 views
For each of the following examples, decide whether it would be better to use the
term molecule or formula unit. a. K2SO3 b. H2SO3
3 answers
894 views
A container in the form of a right circular cone (vertex down) has a radius of 4m and height of 16m. If water is poured into the
4 answers
5,306 views
Suppose you own a tour bus and you book groups of 20 to 70 people for a day tour. the cost per person is $30 minus $0.25 for
1 answer
689 views
You want to design an experiment to test if a bacteria affects a transmembrane protein. What types of controls should you use to
1 answer
373 views
Determine the magnitude of the vector sum V=V1+V2 and the angle theta(x) which V makes counterclockwise from the positive
3 answers
3,326 views
Determine the magnitude of the vector sum V=V1+V2 and the angle theta(x) which V makes counterclockwise from the positive
2 answers
700 views
If both the projection Pa and component Fb of the force F are 305 N, determine the magnitude F and the orientation è of the
3 answers
2,034 views
The two forces shown act in the x-y plane of the T-beam cross section. If it is known that the resultant R of the two forces has
6 answers
2,858 views
If both the projection Pa and component Fb of the force F are 305 N, determine the magnitude F and the orientation è of the
2 answers
1,186 views
Can someone please show me how to work this problem below?
Jacob earned $80 babysitting and deposited the money into his savings
7 answers
550 views
On the Acme W&W company production line, parts have to be transported 100 m by conveyor belt to a machine area. The parts move
1 answer
494 views
a) On the Acme W&W company production line, parts have to be transported 100 m by conveyor belt to a machine area. The parts
1 answer
475 views
a) On the Acme W&W company production line, parts have to be transported 100 m by conveyor belt to a machine area. The parts
1 answer
454 views
A high-speed maglev train is traveling with a changing velocity. what can be said about the forces acting on the train?
Thanks!
2 answers
562 views
a) In 1897, Madeline Boardman won the long-drive contest during the U.S. Women's Amateur Golf Tournament. Her winning drive was
2 answers
689 views
Which would be grammatically correct:
We both had a goal and objective in mind to get our jobs done. or We both had a goal and
4 answers
443 views
1) A high-speed maglev train is traveling with a changing velocity. what can be said about the forces acting on the train?
2) An
2 answers
598 views
A highway curve with a radius of 750 m is banked properly for a car traveling 100 km/h. If a 1600- kg Porshe 928S rounds the
1 answer
632 views
What is the formula for 2-bromomethylpropane ?
1 answer
345 views
If z^2 = x^2 + y^2 with z>0, dx/dt=3, and dy/dt=6, find dz/dt when x=4 and y=3.
Answer: \displaystyle \frac{dz}{dt} =
2 answers
647 views
5(2x-4)+ 11< 10 -2(6-x)
1 answer
303 views
as you are riding in a 1650-kg car, you approach a hairpin curve in the road whose radius is 50m. the roadbed is banked inward
1 answer
623 views
4. Tonya is 1.3 meters tall. She stands 7 meters in front of a tree and casts a shadow 1.8 meters long. How tall is the tree?
4 answers
2,237 views
What is the kinetic energy in MeV of a π–meson that lives 1.80×10-16 s as measured in the laboratory, and 0.840×10-16 s
1 answer
394 views
1) Determine the amount of heat in kJ given off when 1.26 x 10^4 g of NO2 are produced according to the equation:
2NO (g) + O2
4 answers
2,153 views
1) A 0.1375-g sample of solid magnesium is burned in a constant-volume bomb calorimeter that has a heat capacity of 3024 J/C.
7 answers
5,233 views
Are the teachers here getting paid to help the students?
Is this a paid program?
6 answers
360 views
I need help on a artistic response to the contemporary world im not creative i need help please im thinking to do one on war or
5 answers
415 views
For a science fair competition, a group of High School students built a kicker-machine that can launch a golf ball from the
3 answers
617 views
During a rElay race along a straight ROAD the 1st runner on a three person team runs D1 with a constant velocity v1. The runner
2 answers
1,641 views
a BALL IS THROWN UPWARD WITH AN INITIAL VELOCITY OF 9.8 M/S FROM THE TOP OF A BUILDING.
FILL A TABLE BELOW SHOWING THE BALLS
1 answer
1,072 views
Samantha Roberts has a job as a pharmacist earning $30,000 per year, and she is deciding whether to take another job as the
2 answers
856 views
Samantha Roberts has a job as a pharmacist earning $30,000 per year, and she is deciding whether to take another job as the
1 answer
779 views
if I bought 3 items at 24.95 and 2 items at 45 and they were all 30% off, If I had bought these 5 items without the 30$ off what
1 answer
342 views
Use logarithmic differentiation to find the derivative of y:
y=x^(e^x)
1 answer
417 views
I understand part (I) but We have only briefly gone over the HH equation in class and I understand how to use it to get the pH
2 answers
767 views
When a 100 mM aq solution of sodium acetate was prepared in the lab it had a pH of 8.9.
Calculate the amount of acetic acid (in
4 answers
527 views
What is the maximum mass of S8 that can be produced by combining 85.0 g of each reactant?
8SO2 + 16H2S yields 3S8 +16H2O
3 answers
931 views
What is the maximum mass of H2O that can be produced by combining 71.7 g of each reactant?
4NH3 (g) + 5O2 (g) -----> 4NO (g) +
2 answers
692 views
Did I round to the correct number of Sig figs?
18.0/83 x 100= 22% 15.87/149.87x 100= 11.3%
3 answers
363 views
The lens of a telescope has a diameter of 24 inches. Find the exact area of the lens.
1 answer
353 views
Find the volume of a regular square pyramid that is 8 m high and has the length of the side of the base as 9 m
2 answers
579 views
Find the level of elevation of the sun when a 842 foot building casts a shadow72.6 feet long
1 answer
336 views
Can you show steps on deriving the identity from the sum and difference formulas for cosine:
sin a sin b = (1 / 2)[cos(a – b)
2 answers
528 views
Use the trigonometric subtraction formula for sine to verify this identity:
sin((π / 2) – x) = cos x
4 answers
1,449 views
Whitney invested $25,000, part at 19% and part at 6%. If the total interest at the end of the year is $3,320, how much did she
1 answer
395 views
One half the members of the junior high math team are ninth graders. One fourth of the remaining members are eighth graders. One
2 answers
657 views
1. In geometry, the symbol used to identify an object often looks like the meaning, or picture, of itself. Which of the symbols
2 answers
547 views
1. Nicole plans to apply 2 coats of varnish to a square floor measuring 12 feet on each side. if 1 quart of varnish covers 150
7 answers
550 views
1. a triangle has vertices at (0,0), (2,1),(1,3). About which line could the triangle be resolved, in order to form one cone?
A)
5 answers
659 views
1)How did the shift to farming impact native american cultures?
A) Farming impact native cultures to build more permanent
6 answers
1,427 views
1)How did the people of the inca empire adapt to their surrounding physical environment
A) By building longhouses and canoes out
2 answers
1,209 views
An ideal gas starts in state A at temperature T. The gas expands to new volume V by an adiabatic process and its final
2 answers
527 views
The total of dharma's, Eugene, and Ferns final exam score is 272 Dharma score is added to Eugene score the sum is 28 points less
2 answers
585 views
1. Plane hkp and plane rkp are two distinct planes. name the intersection of the plane hkp and plane rkp.
A) Ray KP B) Ray HK C)
7 answers
8,089 views
1. What is the name of the ray that is opposite of ray BA?
Description of the ray. It's a straight line with the points A B C D
4 answers
9,475 views
A scientist studying the effects of gamma rays on marigolds gathered the data shown below.
Hypothesis: Marigolds exposed to
4 answers
1,311 views
1. What is the difference between a scientific theory and a scientific law?
A) A scientific theory describes a pattern of
22 answers
10,798 views
1.MO bisects LMN, m LMN=6x-28, m LMO=x+34. Find m NMO.
A) 46.4 B) 92.8 C) 63 D) 58 Is the answer A?
7 answers
5,373 views
The quality control manager at a light bulb factory needs to estimate the mean life of a large shipment of light bulbs. The
2 answers
917 views
1. When constructing a congruent line segment to cd , the ray needed for the construction must be shorter than CD.
A) True B)
2 answers
1,346 views
1.Which of the following is true about the bisectors of a segment in a plane?
A) Every segment has exactly one bisector. B) Every
4 answers
1,919 views
1. To construct a copy of an angle ABC, the material that is Not necessary is
A.) Protractor B.) Compass C.) Ruler or
4 answers
1,341 views
1. Jenny is building a rectangular garden around a tree in her yard. The southwest corner of the garden will be 2 feet south and
5 answers
4,594 views
In evolutionary terms, RNA is thought to have preceded proteins and DNA. Which of the following provides the most convincing
3 answers
779 views
In evolutionary terms, RNA is thought to have preceded proteins and DNA. Which of the following provides the most convincing
1 answer
465 views
The Parasol Insurance Group sells a variety of insurance policy types. Design a flowchart for a program that accepts a
1 answer
451 views
write in standard form a+bi: (2+3i)^3
1 answer
305 views
Consider two circles. A smaller one and a larger one. If the larger one has a radius that is 8 ft longer than the smaller one,
2 answers
481 views
Use quadratic formula to solve:
5x^2-10x+6=0
4 answers
504 views
1 - 1 = 1
______________________________________ 4x-12 2x-6 x^2-3x Solve the equation (its subtracting the first two fractions
1 answer
324 views
factor completely: 16x^2 + 16x-21
I got not factorable...
2 answers
502 views
simplify expression (no negative exponents)
-2^-3(xy^3)^-2/x^-1y^-3 I got 1/-8x^2y^2
1 answer
377 views
Alexander purchased a computer on sale. The original price was $1200. The sale price was 5/6 of the original price. How much did
4 answers
1,266 views
A deep-sea diver descended from a rock that is 45 feet below sea level to a coral reef that is 88 feet below sea level. How far
3 answers
1,237 views
1.How are the two statements given below related to each other?
x: if you run for 10 minutes, then you will raise your heart
1 answer
426 views
Which period of history was influenced by the classical Greek and Roman works?
A)Renaissance B) Age of Exploration C) Technology
3 answers
474 views
1. Who were the first Early American civilization to build stone pyramids?
A. Maya B. Olmec C. Aztec D. Inca Ok, so I originally
4 answers
850 views
1. Spanish explorers first arrived in the Americas
A) In the nineteenth century B) in the late 1400s C) In the late 1500s D) In
3 answers
695 views
1. Which period of history was influenced by the classical Greek and Roman works?
A) Renaissance** B) Age of exploration C)
5 answers
557 views
Here is the information for two pay-as-you-go cell phone companies,
On Call- 3.5 hours: $10 Talk Time- 1/2 hour: $1.25 1)What is
7 answers
3,276 views
Hello! I had a question about variations in animals, also known as genetic variations.
What is a variation? I cannot find an
2 answers
741 views
Alfred is saving up money for a down payment on a house. He currently has $4185, but knows he can get a loan at a lower interest
4 answers
1,268 views
Albert is saving up money for a down payment on a house. He currently has $4718, but knows he can get a loan at a lower interest
2 answers
475 views
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