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Alex
Questions and answers by
Alex
, page 10
Questions (2,580)
A box slides down a plane 8 m long that is inclined at an angle of 30 degrees with the horizontal. If the box starts from rest
4 answers
1,422 views
1)Animal cells prefer to be in isotonic solution, while plant cells prefer to be in hypotonic solution.
Explain what this means
2 answers
700 views
Calculate the heat in joules needed to warm 225g of water from 88.0 degrees Celsius to its boiling point 100.0 degrees Celsius
2 answers
848 views
The following substances undergo complete combustion in a bomb calorimeter. The calorimeter assembly has a heat capacity of
3 answers
1,595 views
Given: y^2+h^2=1
Find h as a function of y. If expression for dy/dx includes h, substitute the expression in terms of y for h.
0 answers
455 views
Given: y^2+h^2=1
Find h as a function of y. If expression for dy/dx includes h, substitute the expression in terms of y for h.
4 answers
451 views
implicit differentiation of x^3y^2-5x^2y+x=1
3 answers
654 views
Two compressible solids are formed into spheres of the same size. The bulk modulus of sphere two is twice as large as the bulk
3 answers
2,010 views
Is this correct?
1. The closest ocean to Mongolia is the Pacific Ocean. 2. The capital of the island nation that has the Sea of
2 answers
615 views
If one card is drawn from a deck of cards,what is the probability the card will not be an ace? I think the answer is 1/13. Am I
1 answer
349 views
Is this correct? If one card is drawn from a regular deck of cards,what is the probability the card will not be an ace? 1/13 is
4 answers
430 views
If you had 78.2 grams of K, how much oxygen is needed to convert it all to K2O?
3 answers
391 views
If you mixed 10.0 mL of calcium nitrate and sodium phosphate, both 0.250M,which of the two would be the limiting reactant?
1 answer
362 views
Write the net ionic equation for the reaction of calcium nitrate and sodium phosphate
9 answers
14,353 views
A plane drops a bomb from an altitude of 10,000m.
a. Determine the time the bomb is in the air. b. Determine the velocity the
1 answer
743 views
A thrill-seeking cat with mass 4.00 kg is attached by a harness to an ideal spring of negligible mass and oscillates vertically
5 answers
1,940 views
An open train car, with a mass of 2070 kg, coasts along a horizontal track at the speed 2.31 m/s. The car passes under a loading
2 answers
986 views
1.The constitution grants the federal courts ____ in several different kinds of court cases. This gives them the authority to
4 answers
1,160 views
The two blocks in the figure below, m1 = 1.2 kg and m2 = 4.8, are connected by a massless rope that passes over a pulley. The
2 answers
581 views
An object is located 16.8 cm in front of a convex mirror, the image being 11.5 cm behind the mirror. A second object, twice as
2 answers
547 views
Linearly polarized light is incident on a piece of polarizing material. What is the ratio of the transmitted light intensity to
3 answers
1,483 views
Electromagnetic waves can form standing waves. In a standing wave pattern formed from microwaves, the distance between a node
3 answers
846 views
I need help classifying sentences (compound, complex, compound-complex). Here's the sentence: I got in trouble so I can't go to
2 answers
244 views
Thanks Ms. Sue! I have other sentences I would like to try to get right.
1. Mr. Morton, the best reading teacher in the world,
1 answer
345 views
y1= sin (x)
y2= (tanx) It is graphed in the interval [0, pi/2] find the integral
1 answer
314 views
y1= sin (x)
y2= (tanx) It is graphed in the interval [0, pi/2] find the integral
1 answer
283 views
What is the area is square units o the region under the curve of the function f(x)=4, on the interveral from x=-1 to x=3
2 answers
884 views
A spherical snowball is melting in such a way that its diameter is decreasing at rate of 0.3 cm/min. At what rate is the volume
4 answers
1,354 views
Use implicit differentiation to find the slope of the tangent line to the curve
y/(x–9y)=x^6–2 at the point (1,-1/-8). Can
3 answers
794 views
Using the accurate concentration that you measured in Part A (which is 14.77 ml), calculate the mass of HCl (in grams) present
1 answer
373 views
Using the accurate concentration that you measured in Part A (which is 14.77 ml), calculate the mass of HCl (in grams) present
2 answers
882 views
T=PV/nR
P=0.96 V=0.045 n=0.002 g/mol R=0.082057
4 answers
354 views
A population of animals oscillates annually from a low of 1300 on January 1st to a high of 2200 on July 1st, and back to a low
2 answers
1,157 views
A boat is traveling in a river with a current that has a speed of 1.5 km/h. In one hour, the boat can travel twice the distance
2 answers
586 views
The kindergarten has a box of blocks.Some blocks are red,some yellow and some are blue.1/2 of the blocks are red,1/4 of the
4 answers
1,298 views
Is this correct? Hawaii and the Florida Keys are the only 2 states that are located south of the 25 degrees N latitude line?
2 answers
811 views
Write an equation for the line with points (4,5) and (6,9).
Please explain.
1 answer
312 views
A nearsighted person has a far point located only 200 cm from his eyes. Determine the focal length of contact lenses that will
3 answers
628 views
Students are conducting an investigation that tests the force of a magnet by using one magnet to repel a second magnet. Which
3 answers
508 views
Hi.. I need help figuring out this problem, sovling for x: 3 divided by x/9 = 5 and 2/5
I was able to solve: x divided by 3/4 = 6
4 answers
330 views
In the "Methode Champenoise," grape juice is fermented in a wine bottle to produce sparkling wine. The reaction is given below.
C
3 answers
712 views
Find the value of the function y=sqrt(x+1)+sin(x)-0.5, correct to 3 decimal places, when x=0.05 without the use of a calculator.
3 answers
806 views
In the "Methode Champenoise," grape juice is fermented in a wine bottle to produce sparkling wine. The reaction is given below.
C
1 answer
666 views
sorry,but I don't understand word problems - like what formula/expression to use. Here's the 1st problem: Rob practiced 3/5 of
1 answer
247 views
In the "Methode Champenoise," grape juice is fermented in a wine bottle to produce sparkling wine. The reaction is given below.
C
1 answer
770 views
Is CO2 soluble in ethanol? I know that CO2 is nonpolar, so that means it's soluble in nonpolar solvents, but CO2 is soluble in
2 answers
583 views
I didn't see an answer from yesterday, so resending. Also, is there a website to explain how to solve word problems - like key
4 answers
348 views
if a tree in a 1/2 inch scale drawing is 11 inches tall, how tall is the actual tree?
4 answers
1,904 views
A 59-kg person on skis starts from rest down a hill sloped at 36° from the horizontal. The coefficient of friction between the
3 answers
989 views
If you were to examine the mature mRNA that comes from a certain human gene, and then line it up to the actual DNA sequence of
1 answer
1,093 views
Eukaryotic chromatin can be chemically modified in several ways. List at least three modifications and describe the effect of
1 answer
391 views
A 6 m3 box with a perfect triangle base and lid and 3 rectangular walls is to be constructed from 2 materials.
The cost to make
2 answers
494 views
Determine the largest rectangle that can be inscribed inside the cavities of the two curves:
y = –2(x – 6)2 & y = 6x2
1 answer
410 views
The gravitational force between two asteroids 1200 km apart is 8400 N. Find the following changes in gravity (do not write
3 answers
592 views
Kang and Kodos orbit the Earth in a spaceship 20,000 km above Springfield.the period of their orbit (hours) is 11.8 and findthe
1 answer
382 views
Use Kepler's Laws and data about the Moon to determine the orbital period (hours) of a satellite that is 17512 km above the
2 answers
597 views
How many times further from the Sun than the Earth is an asteroid with an average orbital period of 7.43 years? (HINT: Let the
1 answer
415 views
Kang and Kodos orbit the Earth in a spaceship 20,000 km above Springfield.the period of their orbit (hours) is 11.8 and findthe
1 answer
447 views
The area of each square is twice the area of the next smaller square drawn in it. If the area of the smallest square is 3 square
3 answers
634 views
How can lines in a painting lead your eyes
2 answers
542 views
On August 12, 2005 the Mars Reconnaissance Orbiter (MRO) was launched from Earth and reached Mars on March 10, 2006. The orbiter
1 answer
365 views
c) A penny sits 12 cm from the center of a record turning at 33 1/3 rpm. What is the tangential speed in m/s?
d) A mass spins
2 answers
744 views
A student puts on a Dresden Dolls disc in her cd player which spins at 1800 revolutions per minute. A compact disc has a mass of
2 answers
594 views
A toy plane of mass 0.624 kg is flown in a circle when attached to a string. The plane moves around the circle with a rotational
1 answer
419 views
A toy plane of mass 0.624 kg is flown in a circle when attached to a string. The plane moves around the circle with a rotational
3 answers
514 views
A coin is placed on an old record turntable which rotates at 78 rpm. The coefficient of friction between the record and the coin
2 answers
775 views
I'm not sure how to solve the following problem: If you divide 1/10 of a dollar into parts that are each 1/100 of a dollar, how
5 answers
418 views
On August 12, 2005 the Mars Reconnaissance Orbiter (MRO) was launched from Earth and reached Mars on March 10, 2006. The orbiter
1 answer
433 views
c) A penny sits 12 cm from the center of a record turning at 33 1/3 rpm. What is the tangential speed in m/s?
d) A mass spins
4 answers
906 views
A student puts on a Dresden Dolls disc in her cd player which spins at 1800 revolutions per minute. A compact disc has a mass of
2 answers
875 views
A toy plane of mass 0.624 kg is flown in a circle when attached to a string. The plane moves around the circle with a rotational
3 answers
451 views
A coin is placed on an old record turntable which rotates at 78 rpm. The coefficient of friction between the record and the coin
2 answers
601 views
a 2kg mass is hung from a tree and is released. Using the nodes on the graph, sketch the general shape of the vertical position
1 answer
314 views
Write a polynomial function in standard form with the given zeros: x=2,-2,4
3 answers
672 views
The solubility of strontium oxide, SrO, in water is 22.8 g per 100 mL at 100 °C and 0.69 g per 100 mL at 30 °C. Is the
2 answers
868 views
The International Space Station is 370 km above the Earth's surface (Re = 6378 km, Me = 5.98 x 10^24 kg). What is the linear
2 answers
1,127 views
Black Holes are suspected when a visible star is being noticeably pulled by an invisible partner that is more than 3 times as
5 answers
6,030 views
a stone thrown from ground level returns to the same level of projection 4s after. with what speed was the stone thrown? Take
1 answer
476 views
I have a couple of phrases/sentences that need to be labeled as a type of figurative language.
1. Pitter Patter, raindrops are
3 answers
496 views
a. Write a formula for Q as a function of t.
b. What is the value of Q when t=10 1. Initial amount 2000; increasing by 5% per
3 answers
1,019 views
Write the half-reactions for F3+ + I- ---> F2+ + I2 and balance it.
3 answers
717 views
Which state capital is east of the 90 degree W longitude line: Jackson, Indianapolis, or St Paul.
I think that Indianapolis is
2 answers
554 views
A rectangular field will be fenced on all four sides. Fencing for the north and south sides costs $5 per foot and fencing for
4 answers
1,978 views
I missed these questions on homework about adjectives. Can you double check my corrections?
Directions: 1. tell what is the
1 answer
362 views
What is the name of the salt lake located on the border between Israel and Jordan?
I think the answer is the Dead Sea, is that
1 answer
414 views
Please help with the following questions:
1. write 12 million in scientific notation 2. Write 17,600 in scientific notation 3.
3 answers
623 views
The radio station WBRU broadcasts in the radio spectrum at 95.5 MHz. What is the wavelength of this electromagnetic wave in
4 answers
1,111 views
If I had the many black grey and white socks and i pulled out 2 socks that did not match. How many more socks do i have to take
1 answer
350 views
A toboggan approaches a snowy hill moving at 15.0 m/s. The coefficients of static and kinetic friction between the snow and the
1 answer
670 views
As your bus rounds a flat curve at constant speed, a package with mass 0.900 , suspended from the luggage compartment of the bus
1 answer
1,150 views
The area of a triangle is equal to 1/2 the hight times the base. A triangle has a height of 10 and a base of 20. If the height
1 answer
499 views
Kelsea has 6 coins. One-third of her coins are dimes. The value of the dimes is one-fourth the value of the coins. How much
4 answers
511 views
24x^3y^2/42x^7y^-6 please help i need to simplify i can only use positive intergers
1 answer
304 views
24x^3y^2/42x^7y^-6 please help i need to simplify i can only use positive intergers
1 answer
770 views
24x^3y^2/42x^7y^-6 please help i need to simplify i can only use positive intergers
1 answer
321 views
At a certain time of day, a tree that is Xft tall cast a shadow that is X-35 meters long if the distance from the top of the
3 answers
713 views
Help! I need help unscrambling these letters into two words it is due tommorow! The letters are
tttrrlnemisianaaon it is the name
1 answer
509 views
An astronomer looks at a comet which is 5.92 x 109 km away.
How many minutes did it take the light from the comet to reach the
1 answer
431 views
A radio tunes in radio waves which have a wavelength of 3.13 meters. What frequency is the radio tuned to in MHz?
3 answers
610 views
A 100 watt bulb emits light in all directions. The distance R from the bulb is equal to 1.0 meter.
Complete the table below with
2 answers
901 views
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