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JC
Questions and answers by visitors named
JC
Questions (60)
Algebra Riddle with PIZZAZZ
"Did you hear about..."
13 answers
8,179 views
A bullet is dropped into a river from a very high bridge. At the same time, another bullet is fired from a gun straight down
3 answers
1,991 views
A tennis ball on Mars, where the acceleration due to gravity is 0.379 of a and air resistance is negligible, is hit directly
1 answer
873 views
A rock is thrown vertically upward with a speed of 11.0 from the roof of a building that is 70.0 above the ground. Assume free
2 answers
946 views
Two stones are thrown vertically upward from the ground, one with three times the initial speed of the other. Assume free fall.
I
4 answers
2,351 views
At the instant the traffic light turns green, an automobile that has been waiting at an intersection starts ahead with a
3 answers
692 views
A 0.525 ball starts from rest and rolls down a hill with uniform acceleration, traveling 154 during the second 10.0 of its
1 answer
450 views
A rocket blasts off vertically from rest on the launch pad with an upward acceleration of 2.30 . At 10.0 after blastoff, the
1 answer
992 views
A cannonball is fired horizontally from a 240 -high cliff toward a vertical building 540 away with an initial velocity of 90.0 .
2 answers
1,125 views
A rock dropped from a small bridge encounters no air resistance and hits the pond below 1.0 s later.
If it had been thrown
1 answer
1,061 views
A golf ball is hit into the air, but not straight up, and encounters no significant air resistance.
Which statements accurately
2 answers
1,024 views
An athlete starts at point and runs at a constant speed of 5.40 around a round track 250 in diameter
Find the component of this
1 answer
690 views
I have posted this one before, but the help I received went over my head...
Firemen are shooting a stream of water at a burning
1 answer
679 views
I have no idea!!!
A river flows due south with a speed of 2.30 m/s. A man steers a motorboat across the river; his velocity
3 answers
1,378 views
If the molecular weight of a protein is given as 90,000 are the units g/mol or simply g? I have seen mixed answers to this
1 answer
976 views
Can anyone suggest an animal that could be considered messy or disorganized, along with a complementary animal that would be
1 answer
733 views
Let a(t), v(t) and s(t) be the acceleration, velocity, and position functions respectively of a particle. If a(t)=5cos(t/2)+sint
1 answer
762 views
You are going to be provided with 1 0.50 g sample of magnesium oxide. Treatment of this sample with hydrochloric acid (HCl) will
3 answers
559 views
why is electricity able to pass through a penny, nickel, and a dime but can't pass through paper, foil, and plastic?
4 answers
291 views
Sorry for posting so many, but I just need to make sure I'm on the right track.
Just need someone to check my working and
2 answers
590 views
I'm having troubles with a few questions.
A tennis ball is thrown vertically upwards. At the top of it's flight, it has: A. a
5 answers
861 views
Is there any good websites which can give me something to read on "About a Boy" the novel. I have to write a supervised essay in
2 answers
522 views
5(2m+3)-(1-2m)=2[3(3+2m)-(3-m)]
Does this have a solution? I can only get so far... Thanks
4 answers
284 views
a 15-kilogram box is dragged up an incline that is 8.0 meters long and makes an angle of 15 degrees with the horizontal. If the
4 answers
1,280 views
Is there hidden cost with pulley systems that reduce effort?
3 answers
247 views
What do you think a good third world city or a major city in a poor developing country would be a good one to write an
5 answers
716 views
why do different compound have different colours in their visible emissions?
4 answers
453 views
part B.
would you expect the emissions to vary if metal flourides were used rather than metal chlorides?
4 answers
2,150 views
Given:
90m skid mark .50 coefficient of friction between the tires and skid mark How fast is the car moving when the brakes
2 answers
599 views
The water skier in the figure is at an angle of 35degree with respect to the center line of the boat, and is being pulled at a
3 answers
1,174 views
If your neighbor's house is 2/8 smaller than you house and the volume dimensions of your house are 13, 26 and 130 sq ft, what is
1 answer
377 views
Calculate the pH in a 0.00500 solution of NaOH.
3 answers
523 views
For the weak acid HX, what is the pH of a 0.10 M solution if the acid is 4.0% ionized?
1 answer
348 views
Find the distance of the shotcut and the distance of the long way for two locations. find the number of seconds saved ( 2.1 and
1 answer
414 views
Please confirm if I did this correctly:
What is the Principal? Principal $21250 X 10% 2,125 What is the total amount paid by the
1 answer
432 views
Please advise how do I get the Regular % and the Cummulative % I just need one example other wise I will lose what's left of my
2 answers
558 views
Please advise how do I get the Regular % and the Cummulative % I just need one example other wise I will lose what's left of my
1 answer
380 views
In the sentence "Let's walk around." Walk is the noun or the verb? And What is "Let's"?
10 answers
1,409 views
Ethnographic methods are to ethnological methods as: (Points : 1)
the humanities are to the sciences. fieldwork is to laboratory
1 answer
405 views
The base of the prism is a rectangle with sides 13 m and 5 m in length. Find the lateral surface and surface area of the given
2 answers
724 views
Calculate the monthly finance charge for the following credit card transaction. Assume that it takes 10 days for a payment to be
2 answers
557 views
As part of the nation’s recovery from the Great Depression of the 1930s, the banking system was reformed in which of the
4 answers
2,096 views
You are considering buying 27 silver coins that look alike, but you have been told that one of the coins is a lightweight
3 answers
993 views
A 7.00 g sample of KCl is dissolved in 81.0 mL of water. The resulting solution is then added to 28.0 mL of a 0.790 M CaCl2(aq)
3 answers
621 views
I having serious problems trying to solve this equation please help me
find the product matrix for this input-output and demand
2 answers
473 views
what freedoms were the people of Napoleon's day willing to sacrifice
2 answers
881 views
The shop sold 264 inflatable rafts in 24 days. What was the average number of rafts sold each day?
1 answer
365 views
The shop sold 264 inflatable rafts in 24 days. What was the average number of rafts sold each day?
1 answer
353 views
The boiling point of diethyl ether, CH3CH2OCH2CH3, is 34.500 °C at 1 atmosphere. Kb(diethyl ether) = 2.02 °C/m
In a laboratory
2 answers
1,064 views
Aluminum floater: A spherical shell with an outer radius R=2 cm is made of aluminum (mass density of Al is 2.7 g/cm3). How thick
2 answers
602 views
how much oxygen gas wil be produce from the decomosition of 50 grams of pottasium chlorate
4 answers
683 views
An ideal string passes over a fixed pulley and carries masses M1 = 12kg and M2 = 8kg tied at its end. Calculate the acceleration
4 answers
1,523 views
A cyclist in an Olympic race is moving in a circular track of radius 80 m with speed 72 km/h. He has to lean from the vertical
3 answers
1,257 views
In the arithmetic sequence -7, -4, -1, 2,..., what term is 44?
4 answers
1,589 views
Give the next three terms of the sequence 5, 9, 13, 17, 21, 25,... Then graph the sequence.
4 answers
1,803 views
The fourth term of arithmetic sequence is 18 and the sixth term is 28. Give the next three terms.
2 answers
704 views
Two crickets, Chirpy and Milada, jump from the top of a vertical cliff. Chirpy
just drops and reaches the ground in 3.50 s, while
1 answer
332 views
What describes the origins of democracy
1 answer
222 views
Show an example of an irrational number between 9 and 11?
2 answers
45 views
Unit 2 Lesson 8Sectionalism and the Civil War Test
1 answer
14 views
