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David
Questions (1,325)
Two point charges experience an attractive force of 5N when they are separated by 1m.what force do they experience when their
3 answers
1,447 views
A long thin rod lies along the x-axis from the origin to x=L, with L= 0.750 m. The mass per unit length, λ (in kg/m) varies
0 answers
664 views
Ice at 0 degree celcuis is added to 200g of water initially at 70 degree celcuis in a vacuum flask.When 50g of ice has been
1 answer
1,113 views
I am wondering why H2S has only London Dispersion forces and not Hydrogen Bonding?
2 answers
509 views
I am wondering why H2S has only London Dispersion forces and not Hydrogen Bonding?
0 answers
399 views
Evaluate tan (inverse cosine of 2/3).
a. square root of 5 divided by 2 b. square root of 5 divided by 3 c. square root of 5
2 answers
591 views
Solve the system using substitution:
x = y - 6 y = 6 - 3x Answer choices: (0,6) (6,0) (0,-6) (-6,0) (
1 answer
373 views
How many triangles exist when the measure of angle B is 100 degrees, a =10 and b=5?
a. none b. 1 triangle c. 2 triangles I have
1 answer
590 views
The radius of this circle is one unit.
Find the exact lengths of the legs in the right triangle if: Sides a is twice as long as
2 answers
626 views
The radius of this circle is one unit.
Find the exact lengths of the legs in the right triangle if: Sides a is twice as long as
1 answer
726 views
The radius of this circle is one unit.
Find the exact lengths of the legs in the right triangle if: Sides a is twice as long as
2 answers
529 views
The radius of this circle is one unit.
Find the exact lengths of the legs in the right triangle if: Sides a is twice as long as
0 answers
433 views
Michael has $50 to spend at the fair .the admission is $10 and each ride is $3.00 ,write an inequality that expresses the number
1 answer
632 views
Diego's deposit $100 and saves $10 per month .write an equation that represent the total amount in his account for x months
2 answers
484 views
Give me some ideas please.
How technology reveals something deeper and essential about human nature: either our strengths or
2 answers
492 views
A manufacture has been selling 1150 television sets a week at $510 each. A market survey indicates that for each $13 rebate
0 answers
1,027 views
An open box is to be made out of a 10-inch by 16-inch piece of cardboard by cutting out squares of equal size from the four
1 answer
4,118 views
A stone dropped into a still pond sends out a circular ripple whose radius increases at a constant rate of 2.6 ft/s.
(a) How
2 answers
3,006 views
The top and bottom margins of a poster are 6 cm and the side margins are each 7 cm. If the area of printed material on the
2 answers
1,740 views
A set costs half as much as a book.A book costs 600$ more than a pen.If the total cost of the three items is 6900$,find the cost
1 answer
557 views
Two cars collide as shown
in the figure. The yellow car is initially heading east and has a mass of 1000 kg. The red truck is
2 answers
1,083 views
A sprinter accelerates at the start of the race at 8.5 m/s^2. After 1.3 seconds the sprinter runs the rest of the 100m race at a
0 answers
1,105 views
A rock is thrown upward from a bridge that is 88 feet above a road. The rock reaches its maximum height above the road 0.67
1 answer
3,531 views
Does anyone know
what impact has gothic architecture had on modern architecture?
1 answer
537 views
In a glancing collision between two identical steel spheres, which of the following statements are correct? (Assume this
1 answer
690 views
A steel ball rolls off a flat table of height 1.05 m with a velocity of 1.90 m/s
a) How long will it take the ball after leaving
1 answer
1,429 views
Need help with study guide!!
1. What are two inventions/concepts that Eli Whitney is known for? 2. Why did New England become the
3 answers
882 views
Building A is 190 feet shorter than Building B. The total height of the two buildings is 1520 feet. Find the height of each
1 answer
1,115 views
Consider the equation f(x)= -2 sqrt(X+3).
List in order the transformations applied to the parent function.
0 answers
483 views
Find the restricted values of x for the following rational expression.
x^2 + x + 6/8x^2 − 8x
1 answer
1,620 views
Find the restricted values of x for the following rational expression.
x^2 + x + 6/8x^2 − 8x
1 answer
858 views
In a repair shop a truck engine that has mass 429 kg is held in place by four light cables (Figure 1) . Cable A is horizontal,
2 answers
10,845 views
A road heading due east passes over a small hill. You drive a car of mass m at constant speed v over the top of the hill, where
5 answers
3,326 views
Four thousand students at a school were asked to name their favorite pizza topping. The results were 800 Pepperoni, 1,000
1 answer
665 views
Rachel runs 7 miles in 80 minutes. At the same rate, how many miles would she run in 64 minutes?
3 answers
809 views
The sum of the angles of a quadrilateral is 360°. Find the conditional, draw a diagram, and state the given and conclusion.
COND
1 answer
1,439 views
what is the maximum speed a car could be traveling in order to stop within 40ft?
d=0.05V^2+1.20V
1 answer
459 views
simplify the expression
(4 square root of x)/(6-square root of x) I need help with this. I've worked it out to the point where i
1 answer
847 views
simplify the expression
(4 square root of x)/(6-square root of x) I need help with this. I've worked it out to the point where i
1 answer
751 views
A bullet of mass 0.05kg has a speed of 400cm|s. What is its kinectic energy? It hits a wall of which the average resistive force
1 answer
775 views
Five-eights of the population of a village are men, one-sixth are children and the rest, 500 in number are women. How many
2 answers
744 views
A boy throws a ball with a horizontal speed of 2.5 m/s at a height of 0.8 m above the ground. The Coefficient Of Restitution
0 answers
438 views
the approximate distance, S, in feet that an object falls in t seconds when dropped from a height can be found by using the
1 answer
1,590 views
The Effel Tower in Paris is 328 feet wide at the bottom and 984 feet tall a model of the tower is 12 inches tall What is the
1 answer
887 views
Bonnie and Bruce have a rectangular swimming pool that is 6 feet wide and 10 feet long. They are going to build a tile border of
1 answer
773 views
A 50kg sign for a local business is hung from a bar which meets a wall at right angles as shown in figure 1. The bar is 1.5
1 answer
745 views
An automobile and a truck start from rest at the same instant, with the automobile initially at some distance behind the truck.
1 answer
1,728 views
On December 1, Year1, El Primero Company purchases inventory from a foreign supplier for 40,000 coronas. Payment will be made in
0 answers
1,150 views
Which of the following sentences contains a prepositional phrase that acts as an adjective?
4 answers
1,293 views
Simplify the expression 6P3.
I don't know how to solve it so if you could help me with it as well i would really appreciate it.
2 answers
2,907 views
Sulfur dioxide and oxygen gases react at high
temperature (400 o C) in the presence of a catalyst(like Pt) to form sulfur
1 answer
886 views
Hydrogen gas (7.0 mL) is mixed with chlorine gas(4.0 mL) at a certain pressure and temperature. A
reaction between H2and Cl2 is
3 answers
661 views
I don't know where to even begin...
Two equally charged ping pong balls, each having a mass of 5g repel eachother hanging from
0 answers
553 views
I am helping my child and didn't read much of the book Dragonwings, so can you help me to answer what is moon shadows point of
3 answers
627 views
A centrifuge for separation of sugar crystals in molasses must exert a force of 6 N/g. If the filter drum has a radius of 350
0 answers
443 views
A copper atom has 29 electrons revolving around the nucleus. A copper ball has 4x10^23 atoms. What fraction of the electrons be
1 answer
2,665 views
You run 21 miles in 6 days. find the rate.
1 answer
472 views
Waterways is thinking of mass-producing one of its special-order sprinklers. To do so would increase variable costs for all
0 answers
898 views
Waterways is thinking of mass-producing one of its special-order sprinklers. To do so would increase variable costs for all
0 answers
802 views
10 l of a solution containing 1.5 moles of HI
1 answer
384 views
Consider an air-bubble level that is sitting on a horizontal surface. Initially, the air bubble is in the middle of the
1 answer
1,118 views
A 100 kg crate rest at the back of the bed of a pick up truck. The length of the crate is 1 m in the length of the bed is 4 m.
1 answer
932 views
first string sports can purchase sneakers for $450 per dozen less trade discounts of 14/12 from ideal shoes. Fancy footwear is
0 answers
548 views
A watch with a list price of $889.00 is sold by a wholesaler at a net cost of $545.75. Find the single trade discount rate being
4 answers
731 views
The list price of a set of fine china is $345.70 and the trade discount is 55%. Find the net cost.
I did $345.70 *.55= 190.14
4 answers
851 views
The ratio of Juma’s and Akinyi's earnings was 5:3. Juma’s earnings rose to shilling 8400 after an increase of 12%. Calculate
1 answer
924 views
Find the ordinary interest to the nearest cent.
$19,000 at 12% for 101 days
1 answer
1,024 views
In the geometric progression, the first is a and the common ratio is r. The sun of the first two terms is 12 and the third term
1 answer
723 views
A perpendicular to the line -4x +3 = 0 point (8, 5). Determine its equation
x = 4/3 undefined y = 5
1 answer
429 views
A fuel dealer makes a profit of shillings 520 for every 1000 liters of petrol sold and shillings 480 for every 1000 liters of
2 answers
621 views
In an experiment to determine the speed of sound, two observers, A and B, were stationed 5.0 km apart. Each was equipped with a
1 answer
1,793 views
A car slows down from a speed of 24.0m/s to rest in 9.0s, How far did it travel in that time?
1 answer
768 views
car leaves skid mark 72m in length with a deceleration speed of 7.20m/s^2. what was the initial speed prior to braking?
1 answer
560 views
A car leaves skid marks 72m in length. The deceleration is 7.2m/s^2. What is the speed of the car before braking?
1 answer
652 views
How much energy (in kilojoules) is released when 15.2g of steam at 114.5∘C is condensed to give liquid water at 63.5∘C? The
2 answers
923 views
Find the value of c which satisfies Rolle’s Theorem for the function f(x)=sin(x²) on (0,√π).
1 answer
595 views
A 283 g air track glider moving at 0.69 m/s on a 2.4 m long air track collides elastically with a 467 g glider at rest in the
0 answers
986 views
A 283 g air track glider moving at 0.69 m/s on a 2.4 m long air track collides elastically with a 467 g glider at rest in the
2 answers
1,502 views
This is a calculus homework question but in reality the problem here is understanding the algebra.
Find the Critical Numbers of
3 answers
583 views
So this one is confusing me:
limit of n as it approaches infinity of (n{SIGMA}i=1) (1/(2^i) *the n is on top of the sigma
4 answers
620 views
I am trying to solve the following L'hopital's limits question below:
lim x -> 0 from the positive direction of ( 5^(sin(x)) - 1
1 answer
601 views
L'hopital's question below:
lim x -> 0 from the positive direction of ( 5^(sin(x)) - 1 )/ (x)
0 answers
429 views
What percent (by mass) of granulated sugar is fructose, and what percent of it is sucrose?
Background: We are doing a colligative
1 answer
903 views
What is the Van't Hoff Factor of
MgSO4*7H2O? We're doing a colligative properties lab at my school where we dissolve various
1 answer
1,981 views
You have a brass ring of inside diameter 10.00 cm that is at 20.0oC. You want to slip this ring over an aluminum rod that is at
0 answers
1,163 views
Which alga is most closely related to plants?
A) Chara B) Kelp C) Ulva D) Diatom E) Euglena I think it's chara, because it is
1 answer
630 views
A person is stranded and sitting 45m above the ground on the ledge of the cliff. of a safety rope is launched upward at an angle
1 answer
652 views
help
A thermally insulated vessel containing 100 grams of ice at 0 degrees Celsius . Water at 55 degrees celsius is poured and
2 answers
1,803 views
In a coordinate plane, Brittany labeled the coordinates for point m as (-31/2,2). Sade tells Brittany to reflect point m over
0 answers
517 views
help
the positions of two particles A and B are P1 (3,4) in meters and P2 ( -3, -4 ) meters respectively. Meters the position A
1 answer
500 views
A space station shaped like a giant wheel has a radius of 1.00 x 10^2 m and a moment of inertia of 5.00 x 10^8 kgm^2. A crew of
1 answer
654 views
A moving 4.5 kg block collides with a horizontal spring whose spring constant is 226 N/m (see figure). The block compresses the
0 answers
635 views
a roller of diameter 1.5 m has a mass of 450 kg; it is pulled by a handle attached to its centre. Find the minimum force to pull
0 answers
597 views
A particle undergoes three successive displacement in a plane as follows 4m southwest, 5m east, 6m in a direction 60 degree
2 answers
1,267 views
A hollow 0.358 kg sphere rolls without slipping down an inclined plane that makes an angle of 41.0o with the horizontal
1 answer
672 views
A hollow 0.358 kg sphere rolls without slipping down an inclined plane that makes an angle of 41.0o with the horizontal
1 answer
593 views
Creating Z_0 boson via symmetric beams a. Z0 boson has a rest mass energy of 91.187 GeV. It is produced in collisions of
0 answers
497 views
Creating Z_0 boson via symmetric beams a. Z0 boson has a rest mass energy of 91.187 GeV. It is produced in collisions of
0 answers
452 views
The reaction of iron and water vapor results in an equilibrium reaction, 3 Fe(s) + 4 H2O(g) ¡ê Fe3O4(s) + 4 H2(g) and an
2 answers
2,327 views
Compare ad contrast indirect versus direct values of biodiversity and provide two examples?
0 answers
714 views
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