physics please HELP !

128,227 results, page 90

physics

The pole vault landing pad at an Olympic competition contains what is essentially a bag of air that compresses from its "resting" height of 1.1 m down to 0.1 m as the vaulter is slowed to a stop. (a) What is the time interval during which a vaulter who has just cleared a ...

Science

What is the mathematical calculations that lead to the theory of Dark matter or Dark energy? What is the calculation for energy in the universe? What is the calculation for matter in the universe? What is the discrepancy between the two calculations? Please note that we don't ...

math please help

Your parents have just brought you a care and now you have an opportunity to "deck it out." how would you change/ enhance your vehicle to make it your dream car? What features/parts would you add, including taxes. Imagine you have a job, $1000.00 in savings account and can ...

ECONOMICS PLEASE PLEASE HELP!!

Lots of folks these days believe that CO2 emissions generated by human actions --- notably production of goods and services --- are causing climate change, more specifically, global warming. For the sake of dialectic discussion, let's suppose that claim is correct. If it is ...

Physics

Two geekie physics students with a combined mass of 131 kg jump into their old car to run out for some late night pizza. The distance between the front and back axles of the car is 2.9 m. When they get in the car, the springs compress a total of 9.3 cm. On their way to the ...

Physics

A bullet is fired horizontally from the roof of a building 100 meters tall with a speed of 850 m/s. Neglecting air resistance, how far will the bullet drop in 3 seconds? 1 29.4 m 2 44.1 m 3 100 m 4 2550 m Answer should be choice 2) 44.1m BUT I DON'T GET IT! Please help me;( if...

Math - More Precision and Significant Digits

Please help me with the following problems: 3. Choose the more precise measurement. 6 cm or 2.5 cm I think it is 2.5 cm. Is this correct? 7. Choose the less precise measurement and explain why it is less precise. 2.8 mm or 3.79 mm I think the answer is 3.79 mm. Is this correct...

Physics ~please help me!~

1.)A 0.5 kg hockey puck moving at 35 m/s hits a straw bale, stopping in 1 s. a) What impulse is delivered to the ball? b) What force is exerted on the puck? 2.) A racing car with a mass of 1400 kg hits a slick spot and crashes head-on into a concrete wall at 50 m/s, coming to ...

Math

in a class of 60 students 30 like maths 25 like physics 30 like chemistry. if 10 like both physics and maths 5 like maths and chem and 5 like phy & chem and 3 like all the subjects. find student like none of subject of if 100 students were surveyed

Math

in a class of 60 students 30 like maths 25 like physics 30 like chemistry. if 10 like both physics and maths 5 like maths and chem and 5 like phy & chem and 3 like all the subjects. find student like none of subject if 100 students were surveyed

French

Can someone please proofread my paragraph? Sortir Diner Je suis allé à un restaurant chinois. Je suis allé avec ma famille. C’été un traditionnel repas de Noël famille. Pour hors d’oeuvre, j’ai mangé (Egg Drop Soup). Pour le plat principal, j’ai mangé de ...

8th Grade Electives Advice

Hi, I'm really struggling with my decision about two electives that I really like. One is Journalism and the other is Creative Photography. If anyone knows or has experience can you please tell me the pros and cons about these two electives please? Also, I only have a few days...

English

Can you please check these sentences for me, please? Thank you very much. 1) There are other teenagers who like wearing baggy jeans. You'll listen to the test twice. 2) You are asked either to cross the correct alternative (among three) or to fill in the blanks with a suitable...

Physics- PLEASE HELP

A luggage carousel at an airport has the form of a section of a large cone, steadily rotating about its vertical axis. Its metallic surface slopes downward toward the outside, making an angle of 21.0° with the horizontal. A 37.0 kg piece of luggage is placed on the carousel, ...

Physics

An 100.0-N crate of apples sits at rest on a ramp that runs from the ground to the bed of a truck. The ramp is inclined at 29.0° to the ground. (b) The interaction partner of this normal force has what magnitude and direction? Magnitude 87.46 N Direction 61° below the ...

BUSINESS COMMUNICATION

I HAVE 5 COMMITTEE MEMBERS I HAVE TO PERSUADE WITH DIFFERENT PERSONALITIES. THEY HAVE TO AGREE ON MY SERVICE. I HAVE TO INCREASE EFFICIENCY OF A BUSINESS OPERATIONS AND KEEP MY CURRENT EMPLOYEES HAPPY. Please note that we don't do students' homework for them. Our tutors try to...

Physical Science [repost]

needed help on these 3 questions that I don't quite understand. Can someone please explain to me how to solve the answer? Use this scenario to answer questions 1-3: A car crashes in a tree at a velocity -26.6 m/s. The passenger in the car is wearing a seat belt and is stopped ...

excretion

Question: which is an example of excretion? a) release of sweat from the sweat glands b) removal of carbondioxide from the lungs Please tell me what is the answer. I thought both urea(from the sweat) and CO2 are products of excretion? In fact, my textbook says that "carbon ...

Chemistry

Can someone please help me on this two Chemistry questions...they are from my lab....the lab was on Acids and Bases using Red Cabbage Indicator. Q1- How consistent was the cabbage juice indicator for this lab? Discuss the limitations of using red cabbage juice as an indicator ...

physics

hello everyone...i just has a general question. I am trying to study for physics. The chapter is contains potential energy, conservative, non conservative, kinetic energy. They have a definition of each , but i still don't have a better understanding of them. I cant ...

Math-Help-please?

Source: At the end of 1993, scientists tracked 1550 nonfunctional components in orbit and projected 42 such objects are added each year. Suppose that an average of 15 of these are brought back to Earth each year. Question. Let t represent time in years. Write the function D ...

math ms sue please help, PLEASE!!!!

also which are independent events? a) a student spins a spinner. on the first spin she spins a six and on the second spin she spins a three b) a student chooses a card from a deck of 20 cards. the student keeps the card and chooses another one. c) a student tosses a coin three...

Algebra please help out

Tomas makes balloons sculptures at a circus. In 180 minutes, he uses 252 balloons to make 36 identical balloon sculptures. Part A question how many minutes does it take to mAke one balloon sculpture? How many balloons are used in one sculpture? b. What is Toma's unit rate for ...

Journalism Lead Help

I posted a question about this a hour ago about this. I just wanted some feedback to see if my lead answered the Who, the What, and the How. If it hasn't please give me some help to improve it please! Thank you! My lead about Online Journalism: Online journalists can cover a ...

physics

In preparation for a demonstration on conservation of energy, a professor attaches a 7.2-kg bowling ball to a 3.4-m-long rope. He pulls the ball 23° away from the vertical and holds the ball while he discusses the physics principles involved. Assume that the force he exerts ...

physics

what is the physics behind the process of administering the following 1. measurement of blood pressure using sphygmomanometer 2.giving injections 3.administering intravenous infusion 4.giving oxygen in the ward and operating theater 5. administering blood transfusion 6.sucking...

algebra[please check]

in questions 1 and 2, write an equation of the line in slope-intercept form. 1. the slope is -4/3; the y-intercept is -2. 2. the slope is 0; the y-intercept is -5. my answers: 1.y=-4/3-2 2. y=-5 ______________________ write an equation of the line that passes through the point...

Physics

What is the factor of safety of a steel hanger having an ultimate strength of 630.000MPa and supporting a load of 65000.000N. The steel hanger in question has a cross sectional area of 5.300cm. ANS = (Round to 3 decimal places) Load = 65000.000N ultimate strength = 630.000MPa...

Physics

What is the factor of safety of a steel hanger having an ultimate strength of 630.000MPa and supporting a load of 65000.000N. The steel hanger in question has a cross sectional area of 5.300cm. ANS = (Round to 3 decimal places) Load = 65000.000N ultimate strength = 630.000MPa...

Physics

What is the factor of safety of a steel hanger having an ultimate strength of 630.000MPa and supporting a load of 65000.000N. The steel hanger in question has a cross sectional area of 5.300cm. ANS = (Round to 3 decimal places) Load = 65000.000N Ultimate Strength = 630.000MPa...

LAL

CHECK PLEASE are theses ALL complex sentences? 1.i will help you with your homework after you watch the baby. 2. jake stared at me as if he had seen a ghost. 3.you can order whatever you want from the menu. 4.we will be on time unless there is a traffic jam 5.if our teams wins...

Physics

12th grade physics ap question. A baseball with a mass of 120 g is hit 21.8 m into the air. The ball is caught by the third baseman 2.5 m above the ground. What potential energy did the ball develop at its highest point? How much potential energy did it still have when it was ...

Physics please check

A bowling ball encounters a 0.76 m vertical rise on the way back to the ball rack, as the drawing illustrates. Ignore frictional losses and assume that the mass of the ball is distributed uniformly. If the translational speed of the ball is 3.60 m/s at the bottom of the rise, ...

math

Find the slope and the intercepts of each line. g(x)=54x-1 x=-3 Help please! :) g(x)=54x-1 x=-3 I am assuming that you are trying to determine the value of g(x) when x equals -3. If g(x)=54x-1 , then g(-3)=54(-3)-1 Evalute and you have your answer. No, sorry. g(x)=54x-1 and x...

Physics

A ferris wheel, radius 5.0m, rotates once every 8.4 seconds. a) What is the centripetal acceleration of a 60kg person at the circumference? b) calculate the force of the seat on the person at the highest point. c) calculate the force of the seat on the person at the lowest ...

PHYSICS

Hi! I have some questions from a study guide in my physics class, and they give me the answer, but I have to show how to get the answer. I did most of them, but need help with these. Here is problem #8: A 20 kg block of ice slides without friction down a long hill. The start ...

maths

Starting with x0 = 0 (x0 has diagonal 0 that is smaller and towards the bottom) use the iteration formuala xn+1 = 4/ xn^2 +5 twice (for xn+1 the n+1 is smaller than x and diagonal towards the bottom also for xn^2 the n^2 is smaller than the x and diagonal towards the bottom of...

physics

what is the answer to the following 2 physics equations: a=(v, little f in right bottom corner -v little 0 in bottom right corner /t. I need it simplified to what t is and T^- 2n into the square root of L/g I need the equation simplified to get g

sci 241

could any one PLEASE help me get started on this??? I DO NOT UNDERSTAND IT!!!!!!! any advicer or help PLEASE URGENT Write a 1,400- to 1,750-word paper in APA format outlining your healthy eating plan. Be sure to discuss: o Your current eating habits (as documented in the Food ...

Finance

Please help me,math word problems make my brain go crazy. Some friends are urging you to chip in with them to buy a vacant parcel og land on the outskirts of your city. A one-fourth interest would cost you $10,000.Total annual expenses on the property are $2,200.When the ...

Physics(Stress&Strain)

What is the factor of safety of a steel hanger having an ultimate strength of 630.000MPa and supporting a load of 65000.000N. The steel hanger in question has a cross sectional area of 5.300cm. ANS = (Round to 3 decimal places) Load = 65000.000N ultimate strength = 630.000MPa...

Physics (Stress & Strain)

What is the factor of safety of a steel hanger having an ultimate strength of 630.000MPa and supporting a load of 65000.000N. The steel hanger in question has a cross sectional area of 5.300cm. ANS = (Round to 3 decimal places) Load = 65000.000N ultimate strength = 630.000MPa...

Algebra 1- A few questions, please help

**<--That means my answer choice 1. For the data in the table does y vary directly with x? If it does write an equation for the direct variation. x|y 8|28 16|56 20|70 a. yes;y=5x b. yes;y=x+20 c. yes;y=3.5x** d. no; y doesn't vary directly with x 2. For the data in the ...

Math

In November 1994, the first live concert on the Interent by a major rock n roll band was broadcast. Most fans stand in lines for hours to get tickets for concerts. Suppose you are in line for tickets. There are 200 more people ahead of you than behind you in line. the whole ...

KEVIN CAN'T YOU PLEASE HELP ME!!?!?!??!?!?!?!?!

y-2x=-5 3y-x=5 y = -5 + 2x 3y-x = 5 so 3*(-5 + 2x) - x = 5 -15 + 6x - x = 5 -15 + 5x = 5 x = 20/5 x = 4 y = -5 + 2 *4 y = 3

Algebra

Please help!! 5/2y+14

Math help please!!

2m + 1 ---- ---- 6m-3 3-6M

Math

Please help 7+(-9) + (-5) + 6 1/3 + (-5/6) + (-1/2)

algebra2

(3b-2)/b+1=4-(b+2/b-1) please help

Calculus- please help

Let f(t)=(t^2+3t+8)(2t^2+6). (a) f'(t)= (b) f'(4)=

algebra

(-2)/(x-1)=(x-8)/(x+6) please help me with this

damon please help (: !

1. 2x > -6 and x - 4 < 3 2. x + 3 > 2x + 1 and -4x < -8 3. -6 < x + 3 < 6 4. -3x > -6 or x - 5 < 2 5. x - 2 > 2x + 1 or 10 > -2x + 2

PLEASE HELP

What is the domain of y=x

arithmetic

please,can you help me with this? f(x)=x-1/2 g(x)=x+2/3

MATH PLEASE HELP!

2/x2-9 + 1/3x+9

MATH

X-4=3x+12 X=? please help

algebra 1

could you please help me? b+10 b-6 ---- = ----- 6 2

math

HELP PLEASE! 4 1/5 x 3/4 x 6 =

algebra 1

[2(6-1)]/2=? PLEASE HELP ME!??!

math

2 +2 3/7 help please

Math

[6x + 5]/3 = 3x/7 - 2 Please help.

Math

please help me x^3-3x-3=0 thanks

Algebra 1

4/3r-3<r+2/3-1/3r.......... ...........HELP ME PLEASE

math

what is 5/8x=2/5 ?Please help?

college

5/2x+1/4x=9/4+x Please help!

Please help

F(x)=-x²+10x-18

s.s

please helpme thank you

PreCalc

please h t t p : / / w w w . j i s k h a . c o m / d i s p l a y . c g i ? i d = 1 2 6 0 4 8 7 4 9 0

english

please help me

help

no I did not know could you please tell me how to do it, and thank you.

maths

e^x=3e^-x x=? Please help!

algebra

4(w-3)=-12, Help Please.

Algebra, please help!

(2y+5)(y-3)

algebra, please help!

(-7+p)(8+p)

Math

can you please help me with $6.30 x 8.5% thanks!

math

3/2y-3/2y+4 could you help me please

math help please

x+4/5-x+3/3=-7/15

Please help!!!plzz thank u!:)

x-1/x+3=x+2/x-4

algebra

x^2+4x-8 (X+4)^2=6 could you help me please.

math

X^2+4x+3=0 please help

Algebra

Please help: (y^2+4y/y^2+2y-8)/(y/y+2)

solve please

xy = 12 y = 2x + 2

math please help!!!!!!!!!!!!!!!!!!!!!

4=W on W. I don't get it.

Algebra 1

1/4 x (7+3g)= - g/8 please help

math

please help me I don't know how to do this....

algebra

4y - 10 + y + 51 = 6y + 50 - 4y Please help me. thanks!

algebra

8(5x-2)=84 Please help. Thank you!

algebra

PLEASE HELP ME WITH 9X=2X+14

Math

Please help me with this If 2/3 of N is 4, then 1/2 of N is:

math

what is -25+(-16)=? PLEASE HELP

Algebra 2

Please help! (1/4x^4+6/7x^3+1/8x^2+7) + (-3/4x^4+7/8x^2-7).Thank you

math

3/8x + 16 = 9/8x - 20 what is x ? please help!!!!

algebra

3/2=40+y/4= Please help

Math help please

1.) 4(2-a)^2-81 2.) -(x-y)^3 3.)3x^2-27(2-x)^2 4.) 9(y-1)^2-25

Math (please help)

n/3-8=-2 what is n?

math

Please help me with these 1. -5/c = 1/3 2. k/8 = -2/5 3. 6/z = -3/5 Thank you

algebra

can you please help me with these 1. -5/c = 1/3 2. k/8 = -2/5 3. 6/z = -3/5

ALGEBRA-Help please

(2g-3)(2g^2 + g - 4) IS IT 2g^3 - 4g^2 + 12

MATH

Please help me with these: 1. 5/8 + 5/6 = 2. 2 3/5 + 4 4/5 = 3. 13 1/2 + 7 2/3 = 4. 3/8 - 3/8 = Thanks!

MATH

Please help me with these: 1. 5/8 + 5/6 = 2. 2 3/5 + 4 4/5 = 3. 13 1/2 + 7 2/3 = 4. 3/8 - 3/8 = Thanks!

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