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Questions (178)

A 2.2 kg rock initially at rest loses 412 J of potential energy while falling to the ground. Assume that air resistance is
1. 1 answer
2. 2,808 views
A 17 kg rock, m, is on the edge of a 105 m cliff, h, as shown in Figure 11-20. Assume that air resistance is negligible.What
1. 1 answer
2. 1,177 views
How much potential energy does DeAnna with a mass 57.0 kg, gain when he climbs a gymnasium rope a distance of 3.7 m?
1. 1 answer
2. 701 views
A 0.201-kg plastic ball moves with a velocity of 0.30 m/s. It collides with a second plastic ball of mass 0.105 kg, which is
1. 0 answers
2. 527 views
Small rockets are used to make tiny adjustments in the speeds of satellites. One such rocket has a thrust of 35 N. If it is
1. 1 answer
2. 565 views
A 0.201-kg plastic ball moves with a velocity of 0.30 m/s. It collides with a second plastic ball of mass 0.105 kg, which is
1. 1 answer
2. 1,009 views
A student librarian picks up a 2.2 kg book from the floor to a height of 1.05 m. He carries the book 8.3 m to the stacks and
1. 0 answers
2. 1,200 views
A lawn roller is pushed across a lawn by a force of 103 N along the direction of the handle, which is 22.5° above the
1. 0 answers
2. 510 views
A hockey puck has a mass of 0.118 kg and is at rest. A hockey player makes a shot, exerting a constant force of 28.0 N on the
1. 1 answer
2. 824 views
A 605-kg racing car completes one lap in 14.3 s around a circular track with a radius of 40.0 m. The car moves at constant
1. 2 answers
2. 2,832 views
An airplane flies due south at 185 km/h relative to the air. There is a wind blowing at 68 km/h to the east relative to the
1. 2 answers
2. 946 views
A powerboat heads due northwest at 11 m/s relative to the water across a river that flows due north at 5.4 m/s. What is the
1. 1 answer
2. 1,171 views
A 605-kg racing car completes one lap in 14.3 s around a circular track with a radius of 40.0 m. The car moves at constant
1. 1 answer
2. 1,027 views
A curve in a road is banked. There is a car on the curve. What is the component of its weight parallel to the incline? The
1. 1 answer
2. 510 views
two forces, one of 35 pounds and the other 62 pounds, act upon the same object. The angle between these forces is 25 degrees.
1. 1 answer
2. 887 views
To test the performance of its tires, a cartravels along a perfectly ﬂat (no banking) circular track of radius 120 m. The car
1. 2 answers
2. 5,570 views
A bullet of mass 0.0022 kg moving at 568 m/simpacts a large ﬁxed block of wood and travels 5.2 cm before coming to rest.
1. 0 answers
2. 1,169 views
A home run is hit such a way that the baseballjust clears a wall 30 m high located 114 m from home plate. The ball is hit at an
1. 0 answers
2. 712 views
A parachutist with a camera, both descending at a speed of 9.2 m/s, releases the cameraat an altitude of 32.3 m. What is the
1. 1 answer
2. 950 views
A ball is thrown horizontally from the top ofa building 51 m high. The ball strikes the ground at a point 120 m from the base of
1. 1 answer
2. 509 views
A quarterback throws the football to a stationary receiver who is 15.2 m down the ﬁeld.The football is thrown at an initial
1. 1 answer
2. 522 views
A baseball is thrown at an angle of 25 ◦ relative to the ground at a speed of 27.6 m/s. The ball is caught 59.4844 m from the
1. 1 answer
2. 2,697 views
A quarterback throws the football to a stationary receiver who is 15.2 m down the ﬁeld.The football is thrown at an initial
1. 2 answers
2. 913 views
A 0.67 kg rock is projected from the edge ofthe top of a building with an initial velocity of 11.6 m/s at an angle 52 ◦ above
1. 1 answer
2. 6,103 views
Assume: A 78 g basketball is launched at an angle of 46.7◦ and a distance of 18.6 m from the basketball goal. The ball is
1. 1 answer
2. 2,026 views
A cannon ﬁres a 0.639 kg shell with initialvelocity vi = 10 m/s in the direction θ = 55 ◦ above the horizontal. The
1. 2 answers
2. 4,043 views
The shell’s trajectory curves downward because of gravity, so at the time t = 0.217 sthe shell is below the straight line by
1. 1 answer
2. 1,975 views
"Hi. This is my first time here. Anyway, what do I do to answer this statement?-'Discuss the the narrator's success in the
1. 1 answer
2. 547 views
a buffer is to be prepared by adding solid sodium acetate to 0.10M CH3COOH. Which othe following concentrations of sodium
1. 2 answers
2. 3,346 views
Uranium-238 decays to Lead-206. The half life of Uranium-238 is 4.5 billion years. If you have a 100 g sample. How much sample
1. 4 answers
2. 1,203 views
Calculate the number of mL of hydrogen gas at 27 degrees Celsius and 640 Torr produced by the reaction of 0.520 grams of
1. 2 answers
2. 509 views
A christmas bulb of mass W is swung in a vertical circle on a cord length Y. What minimum speed v needed at the top of the
1. 2 answers
2. 459 views
How many homophones can you make with Halloween?
1. 1 answer
2. 486 views
need help how to solve rounding riddles?rounded to the nearest ten. I am 170. The sum of my digits is 14.
1. 2 answers
2. 645 views
2Na + 2H2O = 2NaOH + H2Calculat the moles and volume of hydrogen produced when 0.2 moles of sodium reacts with excess water.
1. 2 answers
2. 2,496 views
a spinner with the numbers 1,2,3,4,5 Make a table showing the possible sumsw of the two spins.
1. 2 answers
2. 602 views
The line 2x+3y=1 intersects the curve x(x+y)=10 at A and B. Calculate the coordinates of A and B.
1. 2 answers
2. 2,024 views
Method collected twice as much money as Lucy for a walkathon. Together they collected $120. much money did each person collect?
1. 1 answer
2. 511 views
evaluate without using a calculatorlg(1/10)
1. 1 answer
2. 404 views
How do I solve the following equation4-7^2x=1
1. 1 answer
2. 340 views
there family has went to yellowstone national parkThis is the sentence that I have to correct and I keep getting it wrong. I
1. 4 answers
2. 3,224 views
Why do different elements "glow" when excited?
1. 1 answer
2. 484 views
What is a good focus question for a research project on woodstock.For example, what is the effect of woodstock on....
1. 1 answer
2. 595 views
My teacher asked us to take five photographs and then in each find four mathematical concepts. She wants us to go beyond the
1. 1 answer
2. 329 views
It takes the earth about 31,558,100 seconds to circle the sun. By how many seconds does this exceed the number of seconds in 365
1. 2 answers
2. 493 views
Why would author Charles Dickens write about poverty and generosity in his writings A Christmas Carol?
1. 1 answer
2. 952 views
In 2001, credit card companies mailed 5 billion credit card applications to 262 million people. On average, how many
1. 1 answer
2. 504 views
A student pulls a backpack weighing 70 N a distance of 50m with a force 25N What amount of force does the student do?
1. 1 answer
2. 475 views
Teresa has 4 flowers, 4 designs. How many ways can she display/mix them up.Thank you ....but 4x4 seems too simple. If I line up
1. 1 answer
2. 1,024 views
Teresa has 4 flower pots in 4 different designs. How many different ways(positions) can she display her flowers?
1. 3 answers
2. 998 views
Why does the flag of Kenya have a shield on it?thanks
1. 1 answer
2. 355 views
I have a paper due tomorrow and I need to include my personal interview, how would I do this in APA format? Any help would be
1. 1 answer
2. 618 views
Estimate the product of $4.67 and 43.
1. 3 answers
2. 223 views
What is the complete predicate in the question: Did you know the ancient Greeks wrote many plays?
1. 3 answers
2. 718 views
What is the equation forterms 1 2 3 4 5 6 499 498 497 496 495 494 and what is the 40th term?
1. 3 answers
2. 478 views
how do I do this one?I am a common factor of 693 and 189 I am also a factor of 525 I am greater than 10 What number am I
1. 3 answers
2. 449 views
Which political events of the 1980s had the most influence on the collapse of Communism in Europe and the end of the Cold War?
1. 0 answers
2. 528 views
I need help describing the social, economic, and political composition of the decade of corporate greed and how it affected the
1. 4 answers
2. 1,207 views
Can someone help me get started with this question. I don't understand history at all and can't find any exact answers.How did
1. 3 answers
2. 637 views
Can someone explain this question to me and help me find some sites. I'm a little lost.Describe the connection between student
1. 7 answers
2. 1,207 views
Could someone review and correct my answers please. I need to decide if each item was an initiative only within Kennedy’s New
1. 3 answers
2. 985 views
I asked this question earlier and wasn't sure what the answer was. Find all numbers for which the rational expression is
1. 4 answers
2. 546 views
LCM of 3(t-2) and 6(t-2)IS the LCM 18(t-2)
1. 1 answer
2. 402 views
Simplify by removing factors of one.x^2-4/2-x would the answer be x + 2/ -1
1. 1 answer
2. 410 views
Find all numbers for which the rational expression is undefined?3/9w+7 Can someone help me figure this out?
1. 2 answers
2. 474 views
How did Mendel's novel approach contribute to his success in describing how traits are inherited?
1. 1 answer
2. 963 views
21 3/14 how would I round that to the nearest 1/5inch
1. 1 answer
2. 382 views
How is doing operations (adding, subtracting, multiplying, and dividing) with rational expressions similar to or different from
1. 1 answer
2. 623 views
I just need help with the number game part. I can't think of any kinds of games to come up with?Take any number (except for 1).
1. 2 answers
2. 761 views
1.In this problem, we will analyze the profit found for sales of decorative tiles. A demand equation (sometimes called a demand
1. 9 answers
2. 1,132 views
Without the invention of the microscope, would the cell theory have been possible?I don't think it would have been possible
1. 1 answer
2. 1,642 views
I posted this question twice by mistake and the response was the same. It said there is a response and to check the other post.
1. 1 answer
2. 699 views
How does Walt Whitman's atitude change toward death during his poem "When Lilacs Last In The Dooryard Bloom'D" What does he
1. 2 answers
2. 833 views
How does Walt Whitman's atitude change toward death during his poem "When Lilacs Last In The Dooryard Bloom'D" What does he
1. 1 answer
2. 1,059 views
How does Walt Whitman's atitude change toward death during his poem "When Lilacs Last In The Dooryard Bloom'D" What does he
1. 1 answer
2. 601 views
Could someone correct my answers and help with the other problems?1. Are the following lines parallel, perpendicular, or
1. 0 answers
2. 608 views
I posted this yesterday but no one told me if my answers were correct.Can someone please check my answers. 1. Solve. –7x + 1 +
1. 1 answer
2. 611 views
Can someone please check my answers.1. Solve. –7x + 1 + 8x = x + 1 A) Identity B) No solution C) 1 D) 0 My answer: A) Identity
1. 3 answers
2. 838 views

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