physics please HELP !
130,813 results, page 37

8 grade math
Can somebody please help me I don't understand this problem.? Determine whether each ordered pair is solution of y=x+3. 1. (2, 9) 2. (5, 23) can you please explain this to me step by step till you get the answer .thank you so much. 
SOCIAL STUDIES HELP PLEASE!!!
how did the supreme court decision in Worcester V.Georgia and the Indian removal act lead to the removal and resettlement of native Americans groups? Can anyone help me with this please? 
To ANY SCIENCE HELPER URGENT
1. Describe 2 methods of viral infection 2. How can a virus be helpful to its host? Please this is very urgent, I have finished everything else but these r my last 2 questions that I don't know! Please help! Thanks:) 
Language(asap answers please!!!)
Which section of a personal narrative requires the most development? a. introduction b. conclusion c. character introduction d. plot My answer: D. Please check! 
Math  Please help
(Write an equation in slope intercept form of the line that passes through the given point and is parallel to the graph of the equation.) (1, 3); y + 2 = 4(x – 1) Please show steps 
Math
what are the values of the function y = 2x  4 for x= 0,1,2 and 3? (1 point) A: 0,6,8,10 B: 4,6,8,10 C: 4,2,0,2 D: 0,6,8,10 Please help me !!!! I'm doing a big math quiz and I can't figure this one out! I got all the other ones right can you please help me!!! SOS 
math please help
Evaluate the following expressions show all your work. A.11^0 B.11^2/11^2 C. Are the answers to both parts the same? Why or why not? Please help me I'm really stupid in math and I can't figure these out? 
Essay
Do Electronic Devices Improve Our Lives? Please help me!! Someone give me ideas!!! I have writers block, because of how many stories I do! Please Help!!! I only need ideas!!!! 
Physics
A 50g tennis ball is thrown with a velocity of 12 m/s. It strikes a wall and rebounds with a velocity of 10 m/s. a) What is the ball's initial and final momentum? b) what is the impulse on the ball? c) Thje ball is in contact with the wall for .10 second. with what force did ... 
Physics Urgent!!!!! I really need help with this
Sorry to repost this, again, but I still don't understand. Newton’s Law of Gravity specifies the magnitude of the interaction force between two point masses, m1 and m2, separated by the distance r as F(r) = Gm1m2/r^2. The gravitational constant G can be determined by ... 
Physics
Jim is 100m(S) of Paul. Paul begins to walk east at 2.0m/s the same time Jim begins to walk west at 3.0m/s. what is the displacement of Jim from Paul 20 seconds later? Please explain steps Answer is 141(SW) 
physics
find the final equilibirum temperature when 10.0 g of milk at 10.0degC is added to 1.60*10^2 g of coffee with a temperatrure of 90.0degC. Assume the specific heats of coffee and milk are the same as for water (Cp,w=4.19J/g*degC) and disregard the heat capacity of the container... 
Physics
Hi I'm kinda new here, and hope someone can please help me out. A person exerts a tangential force of 38.1 N on the rim of a diskshaped merrygoround of radius 2.74 m and mass 207 kg. If the merrygoround starts at rest, what is its angular speed after the person has ... 
Physics
I have a golf ballthat is hit for 0.20s at an angle to the horizontal and it hits the ground some distance away. Initial speed is 30m/s and angle of projection is 35. Calculate the time between when the ball was hit and when it first touched down. I think it should be 30m/s ... 
Physics(Checking answer)
Sorry for the repost but I really need to know this, but now I just want to know if the question is right. A spring with a force of 5.2 N/m has a relaxed length of 2.45. When a mass is attached to the end of the spring and allowed to come to rest. the vertical length of the ... 
Physics
A 784 Newton astronaunt travels to Neptune's largest moon, Triton, with a simple bathroom scale. While standing on the surface of the moon, he finds that he now weighs only 62 Newtons. What is g, acceleration due to gravity, on Triton? g=weight/mass Is that 784/62? Sorry the ... 
Physics
Calculate the power needed from the motor of an elevator for it to be able to lift a 1x10^4kg mass a distance of 20m in 5s. (Enter your answer in scientific notation utilizing "e" format and rounding the decimal value to one decimal place.) I used the equation p = w/t 1e4kg(... 
Physics
While driving her new Camaro at 20.0 m/s down a fourlane highway, Jessica comes up behind a slowmoving dump truck and decides to pass in the lefthand lane. If Jessica can accelerate at a rate of 5.0 m/s^2, how long will it take for her to reach a speed of 30.0 m/s? ( I need... 
physics
A ball of mass m = 500g moves around a vertical axis with an angular speed ù. It is attached to two strings of length: the upper a = 30 cm and the lower b = 40 cm.Both strings are taut and perpendicular to each other. Each of the strings beaks if the tension exceeds 12.6 N. ... 
Physics
*Can someone please help me with this question. I'm supposed to be studing for a test and I can't seem to figure out this problem at all. I think It's FRICTION, but I'm not sure. **If you flip a coin in the air as you travel in an airplane, the coin keeps up with you. This is ... 
physics please help
Question #1 A 0.140kg baseball traveling 30.0m/s strikes the catcher's mitt, which, in bringing the ball to rest, recoils backward 14.0cm . What was the magnitude of the average force applied by the ball on the glove? question #2 How much tension must a rope withstand if it ... 
Physics
A motorboat traveling at a speed of 2.1 m/s shuts off its engines at t = 0. How far does it travel before coming to rest if it is noted that after 2.7 s its speed has dropped to half its original value? Assume that the drag force of the water is proportional to v. Please show ... 
Physics
A 75 kg man on a 39kg cart traveling at a speed of 2.3 m/s. He jumps off with zero horizontal speed realative to the ground. What is the resulting change in the speed of the cart? I tried using m1v1=m2v2 but that didn't work out since I was expose to get 4.4 m/s as the answer... 
Physics
A 75 kg man on a 39kg cart traveling at a speed of 2.3 m/s. He jumps off with zero horizontal speed realative to the ground. What is the resulting change in the speed of the cart? I tried using m1v1=m2v2 but that didn't work out since I was expose to get 4.4 m/s as the answer... 
Physics(Please respond)
1) David has a mass of 86.4kg and is skating with inline skates. He sees his 24.8kg younger brother up ahead standing on the sidewalk, with his back turned. Coming up from behind, he grabs his brother and rolls off at a speed of 2.99 m/s. Ignoring friction, find david's ... 
Physics PLEASE HELP
A 2300. kg car starts from rest and accelerates uniformly to 24.0 m/s in 24.0 s. Assume that air resistance remains constant at 510 N during this time. Find (a) the net force on the car b) the average power developed by the engine? c) the instantaneous power output of the ... 
Physics HW, Help Please
A 70.0 kg football player leaps straight up into the air (with no horizontal velocity) to catch a pass. He catches the 0.430 kg ball precisely at the peak of his jump, when he is 19.2 inches off the ground. He hits the ground 1.61 inches away from where he leapt. If the ball ... 
Physics
Assume that all of the mass of a bicycle wheel is concentrated at its rim. Such a wheel of mass 1.2 kg and radius 30 cm starts from rest at the top of a hill 100m long and inclined at 20 degrees to the horizontal. What will be the speed of the wheel at the bottom of the hill ... 
physics PLEASE HELP
In the rectangle in the drawing, a charge is to be placed at the empty corner to make the net force on the charge at corner A point along the vertical direction. What charge (magnitude and algebraic sign) must be placed at the empty corner? 
physics PLEASE HELP
In the rectangle in the drawing, a charge is to be placed at the empty corner to make the net force on the charge at corner A point along the vertical direction. What charge (magnitude and algebraic sign) must be placed at the empty corner? 
Physics, asap please
If a sphere and paper are dropped from 10 meters and the sphere hit the ground in 1.4 seconds and the paper hit in 2 seconds, why did the impact time in case of the piece of paper change in comparison to the sphere? A. a=(WtR)/m;a=g B. a=(WtR)/m;a>g C. a=(WtR);a<g D. ... 
PreCalc
Please check answer and help with one of them: 1. check please car in an accident speed of car is the s, d is length of skid=30 feet f is coefficient=0.5 use formula to find s=sqaure root of 30*f*d My answer is 21.21 because I took square root of 30(0.5)(30) 2. this one is ... 
PreCalc
Please check answer and help with one of them: 1. check please car in an accident speed of car is the s, d is length of skid=30 feet f is coefficient=0.5 use formula to find s=sqaure root of 30*f*d My answer is 21.21 because I took square root of 30(0.5)(30) 2. this one is ... 
AP Physics 1
This isnt exactly a hw question... but for anyone who knows: Im considering to take AP Physics next year as a challenge. I'm going to be taking precalc next year ( i already took my algebras) and im not too great in math but im good at memorizing and retaining info... will AP... 
physics
A ball is thrown upward from the top of a 24.4mtall building. The ball's initial speed is 12 m/s. At the same instant, a person is running on the ground at a distance of 30.2 m from the building. What must be the average speed of the person if he is to catch the ball at the ... 
Physics
a barrel of oil at rest has a mass of 65kg it is rolled down a 1.2m ramp. Due to constant force exerted on it, the barrel reaches a velocity of 4.2 m/s upon leaving the ramp. Find the constant force on the barrel while it is on the ramp? Help please. 
Physics
A scuba diver has an air tank with a volume of 0.010 m^3. The air in the tank is initially at a pressure of 1.0x10^7 Pa. Assume that the diver breathes 0.400 L/s of air. Find how long the tank will last at a depth of each of the following. (a) 1.0 m min (b) 10.0 m Please ... 
Physics
A scuba diver has an air tank with a volume of 0.010 m^3. The air in the tank is initially at a pressure of 1.0x10^7 Pa. Assume that the diver breathes 0.400 L/s of air. Find how long the tank will last at a depth of each of the following. (a) 1.0 m min (b) 10.0 m Please ... 
Physics
please show me how to solve these: 1. Simpson drives his car with an average velocity of 48.0 km/h to the east. How long will it take him to drive 144 km on a straight highway? answer=3.00 h 2. How much time would Simpson save by increasing his average velocity to 56.0 km/h to... 
Physics
Please help! I've tried several times on my calculator and I can't get it right! Find the force of attraction on a 3 kg mass at the surface of a planet given the following information about the planet: mass = 5.98 x 1024 kg, radius = 6.38 x 106 m. Find the force if the radius ... 
Physics 2 Please help
The figure below shows two points in an Efield: Point 1 is at (X1,Y1) = (3,4) in m, and Point 2 is at (X2,Y2) = (12,9) in m. The Electric Field is constant, with a magnitude of 68 V/m, and is directed parallel to the +Xaxis. The potential at point 2 is 588 V. Calculate the ... 
Physics
Note: I am in Algebrabased Physics Two 35.0 N weights are suspended at opposite ends of a rope that passes over a light, frictionless pulley. The pulley is attached to a chain that is fastened to the ceiling. Start solving this problem by making a freebody diagram of each ... 
physics
At a picnic, a Styrofoam cup contains lemonade and ice at 0 degree C. The thickness of the cup is 2.0*10^3m, and the area is 0.016m^2. The temperature at the outside surface of the cup is 35 degree C. The latent heat of fusion for ice is 3.35*10^5 J/kg. What mass of ice melts... 
Physics
A 54.0kilogram block is placed on a plane that is inclined 32 degrees to the horizontal. The coefficient of static friction between the block and the plane is 0.573 and the coefficiencet of kinetic friction is 0.310. Find the acceleration of the block down the plane. Please ... 
Chemistry (1Question)
This is really confusing. I know how to do the equilibrium which also has to do with reaction rates but they didb't give it to me as a choice. Please Please help me. I post other questions that i answered already but no one answered me. I just needed someone to check them for ... 
Physics Help!!!! Please check
We had worked this one out before but due to my bad note i really don't understand what is going on in the question. Following the question I will post what I wrote done. Please help me make some sense of it. A 3.2 kg block is hanging stationary from the end of a vertical ... 
social studies
i have a crossword puzzle but i have one word i can't figure out.the clue: thei coastal plain is a strip of land that begins in the norteast and runs along the east and gulf coasts.please help me. http://en.wikipedia.org/wiki/Atlantic_Coastal_Plain can you give me an ... 
Physics
A drowsy cat spots a flowerpot that sails first up and then down past an open window. The pot was in view for a total of 0.37 s, and the toptobottom height of the window is 2.20 m. How high above the window top did the flowerpot go? S= ut +(1/2)at^2 S= (0)(0.215) + (0.5)(9.8... 
Physics
A drowsy cat spots a flowerpot that sails first up and then down past an open window. The pot was in view for a total of 0.37 s, and the toptobottom height of the window is 2.20 m. How high above the window top did the flowerpot go? S= ut +(1/2)at^2 S= (0)(0.215) + (0.5)(9.8... 
physics
please tell me if thsi si correct Two equal charges are separated by 3.7 * 10^10 m. the force between the charges has a magnitude of 2.37 * 10^3 N. What is the magnitude of q on the changes? f=1/4pi Er * q^2/r^2 2.37 * 10^3 = 9*10^9 * q^2 ______________ (3.7 * 10^10)^2 3.... 
physics
I still need help with this please.two knights on horseback start from rest 62 m apart and ride directly toward each other to do battle. Sir George's acceleration has a magnitude of 0.17 m/s2, while Sir Alfred's has a magnitude of 0.30 m/s2. Relative to Sir George's starting ... 
Physics
A mine shaft is known to be 57.8 m deep. If you would drop a rock down the shaft, how long would it take for you to hear the sound of the rock hitting the bottom of the shaft knowing that sound travels at a constant velocity of 345 m/s? The answer is 3.60s, but I need to work ... 
Physics
Two positive charges of magnitude q are each a distance d from the origin A of a coordinate system as shown above. ( Figure: h t t p : / / draw.to/DS0Qid) At which of the following points is the electric field least in magnitude? At which of the following points is the ... 
Physics
I cant figure this problem out and it's asking for the value and units for the force. Please help me! A 5.25 kg crate is suspended from the end of a short vertical rope of negligible mass. An upward force F(t) is applied to the end of the rope, and the height of the crate ... 
Physics Someone Please Help!!!
A 60.00 cm guitar string under a tension of 46.000 N has a mass per unit length of 0.11000 g/ cm. (a) What is the speed of the wave? (b) What is the fundamental wavelength for this string? (c) What is the fundamental frequency for this string? (d)What is the highest resonant ... 
Physics Elena please help!
A 60.00 cm guitar string under a tension of 46.000 N has a mass per unit length of 0.11000 g/ cm. (a) What is the speed of the wave? (b) What is the fundamental wavelength for this string? (c) What is the fundamental frequency for this string? (d)What is the highest resonant ... 
Physics please help!!
A projectile is fired at 45.0° above the horizontal. Its initial speed is equal to 42.5 m/s. Assume that the freefall acceleration is constant throughout and that the effects of the air can be ignored. What is the maximum height reached by the projectile? At what time after ... 
Physics
Surprisingly, very few athletes can jump more than 2.7 ft (0.82 m) straight up. Use d = 1/2 gt2 and solve for the time one spends moving upward in a 0.82 m vertical jump. Then double it for the "hangtime"  the time one's feet are off the ground. Can you explain step by step... 
As physics
How do you calculate the braking distance? driver reaction time=0.6s initial speed of car=30ms1 speed*2= distance*4 Please show all the steps and the equations you used in words the question states initial speed*2 is equal to = distance*4 If you need thinking distance it is ... 
Physics _ Please please help
A hollow brass cylinder is weighed on a pan balance (kitchen scale) which read in kg. The scale reading is 5.56 kg. The brass cylinder is now removed from the scale and is replaced by a beaker of liquid density 1.56 * 10^3 kg/m^3; the scale now reads 17.50 kg. The brass ... 
Physics
Vector A has a magnitude of 48 cm and is directed toward the East. Vector B has a magnitude of 21 cm and is directed toward the West. Find the resultant vector with direction. Help please!!!! 
physics
A ski trail makes a vertical descent of 77 m. A novice skier, unable to control his speed, skis down this trail and is lucky enough not to hit any trees. If the skier is moving at 17 m/s at the bottom of the trail, calculate the total work done by friction and air resistance ... 
physics
A ski trail makes a vertical descent of 77 m. A novice skier, unable to control his speed, skis down this trail and is lucky enough not to hit any trees. If the skier is moving at 17 m/s at the bottom of the trail, calculate the total work done by friction and air resistance ... 
NVQ level 3 buisness admin
ok im really struggling on the questions on unit 314 hy the hell is there no question marks i have to anwser them like questions,its confusing me?? please can anyone shed a light over my way please.x cheers ema We don't have access to NVQ questions. Please post one or two of ... 
Inertia
A thin, uniform rod is bent into a square of side length a. If the total mass is M , find the moment of inertia about an axis through the center and perpendicular to the plane of the square. Use the parallelaxis theorem. Express your answer in terms of the variables M and a. ... 
physics
A block of mass 3 kg initially at rest is pulled along a friction less horizontal surface with a force of 4N. The speed of the block at t=2s is a)4/3 m/s b)8/3m/s c)4 m/s d)8m/s e)24m/s For this problem this is a graph. Some of the points on the graph are (0,0),(1,2),(2,4),(3,... 
physics
An owl has good night vision because its eyes can detect a light intensity as small as 5.0*10^13 W/m^2. What is the minimum number of photons per second that an owl eye can detect if its pupil has a diameter of 8.5mm and the light has a wavelength of 510nm? I really got no ... 
Physics
Can someone please tell me the right answer to this problem. A troll on a 75m tall cliff throws a 35 m/s boulder at 35 degrees above the horizontal at a herd of sheep. What is the time of flight, the range and the maximum height for the boulder? I got the range as 58.77. and ... 
physics
An electron has a kinetic energy of 4.2 x 1017 J. It moves on a circular path that is perpendicular to a uniform magnetic field of magnitude 3.3 x 105 T. Determine the radius of the path. The electron in the problem has Charge of the electron (q) = 1.6*1019C Mass of the ... 
Physics
A person walks 25.0 degrees north of east for 3.10 km. How far would another person walk due north and due east to arrive at the same location? I don't understand how I could calculate the needed distance accuratly. I used 3.1*sin(25) + 3.1*cos(25). But I still think I'm ... 
physics
A piece of aluminum (specific heat 910 J/kg C) of mass 200 g at 80C is dropped into a styrofoam cup filled with 100 mL of water at 20C. What the final temperatures of the water and the aluminum? Show calculations. I have Q=m c T but I got 80C which I know is wrong because I ... 
Physics
A velociraptor comes at you at 20m/s and it takes you exactly 2.22 seconds to hit the switch for the door which takes 3 seconds to close. How far away must the velociraptor at least be from the door for your survival? (reworded question to make more interesting without ... 
physics(heat)
a mixture of 250g of water and 200g of ice at 0deg C is kept in a calorimeter which has a water equivalent of 50g. if 200g of steam at 100deg C is passed through this mixture, calculate the final temperature and the mass of contents of the calorimeter. ans 572.22g please ... 
Physics
When a cannon with a longer barrel is fired, the force of expanding gases acts on the cannonball for a longer distance. What effect does this have on the velocity of the emerging cannonball? (Do you see why longrange cannons have such long barrels?) Please help; need a ... 
Please proofread my essay
Could you please proofread my essay. Please check pronoun usage,fragments, a better title and better thesis. Here is my prompt: 1. Does the US need to reduce its dependence on Middle Eastern oil? If you argue that it does, then provide a way for this to be accomplished and a ... 
science
What would happen if the temperature of the tundra increased by 20*F? The exact degree doesn't matter so if you answer my question but with like 10 degrees or 50 or something please tell me. Oh and please don't just list a site that would help me. I need the answer and I've ... 
History (1900’s)
Hey peeps can you guys pretty please give me a list of the challenges of immigration in the 1900's? I have been researching for like literally tree days. Please help me before I melt~ I have this: Immigrants may have been turned down at the front gates. Immigrants may also ... 
Physics
Ok so I am not so bad at physics but I find it hard to understand formular like how to use this one mu *m*g= I know its somewhat related to friction but what is the mu stand for and g too IF someone could plzz translate these symbols to words I would really appreciat it Sorry ... 
Physics  The Branches of Physics
Give at least one example of an application of each branch: Motion cellphone Properties of Materials Sound Radios Light Candle Electricity Calculator Magnetism VCR's Properties of atoms Computers Nuclear physics ? Could you check to see if Ive done this right? And I ... 
U.S History
In the road to independence, Were any of the protests, etc. successful? How dou you know? Please note that we don't do students' homework for them. Once you have come up with a response to these questions, please repost and let us know what you think. Then someone here will ... 
mass communication
who is target audience of sex and the city? Please note that we don't do students' homework for them. Once YOU have come up with a response to YOUR questions, please repost and let us know what you think. Then someone here will be happy to critique your work. =) 
Debatind/ Sose
please I really need statistics and exact examples for my debate. I can not go up there and say many people think we are too americanized. We won't win. Please give me some stats. and eg. on the topic "that australia is becoming too american" Thanks Minerva 
Spanish
Can someone please explain to me how to do this: Traduce las frases al espanol, por favor. 1. Don't rent the apartment 2. Don't leave 3. Don't pass the papers 4. Never play the piano 5. Don't visit your grandmother etc.... Please help. I have to do 20 sentences. Thanks. 
English
The________into the main mineshaft ran for almost 200feet. and the choices are: abattior aficionado abstract alchemical accelerant anachronism acclimated antecedent adit PLEASE IF SOMEONE KNO THE ANSWER PLEASE REPLY 
ScienceQUICKLY PLEASE!!
3. Which of the following projects is a good example of the current cooperation between nations for the furthering of scientific research? a. International Space Station b. NAFTA c. Hoover Dam d. Panama Canal please help!!!!! 
calculuscan someone please help me with this ques
Given the following polynomial f(x)=(x1)(x5), find A.the zeros and the multiplicity of each one b. where the graph crosses or touches the xaxis c.the number of turning points d. the end behavior Please show work. 
Honors US history.. PLEASE HELP!!
How did the success of the civil rights movement and abolishment of slavery open doors to the election of the first Black American President of the United States, Barack Obama? I don't know how to answer this! PLEASE HELP ASAP! 
English
Please help me correct grammar. Please be informed that starting on Nov.22,2015. Due to high consumptiom for the lectric bills. The internet usage charge will be P15.00 per hour and there will be no promo for P25.00 2 hours. Thank you. 
ALGEBRA PLEASE HELP ASAP
find the volume of a cylinder with a diameter of 16mm and a height of 5.7. A.2,292mm^3 . . . 4,584mm^3(i think its this one) . . . 689mm^3 . . . . 1,146 (but i also got an answer close to this but the tens place was 5) PLEASE HELP QUICKLY THANK YOU 
ENGLISH
Mark the stressed syllables in the following sentences 1. can i see you today? 2. it's impoossible to please everybody. 3. The light's wrong for photography. 4. My mind went blank and everything blacked out. 5. Please bring me a chair 
English
Mark the stressed syllables in the following sentences 1. can i see you today? 2. it's impoossible to please everybody. 3. The light's wrong for photography. 4. My mind went blank and everything blacked out. 5. Please bring me a chair 
Math
A Woman has cat's and birds. When asked how many of each she has she answers... " I have between both cats and birds 400 feet and 232 eyes.(Cats have 4 feet and Birds have 2 feet) How Many Total? How many Birds? How many Cats? Please help me solve this. Please Please. Thank You 
Physics please help!
The distance between earth and the moon can be determined from the time it takes for a laser beam to travel from earth to a reflector on the moon and back. If the roundtrip time can be measured to an accuracy of 0.19 of a nanosecond (1 ns = 109 s), what is the corresponding ... 
Physics
When you lift a ball with a force of 82N, the ball accelerates upward with an acceleration of a. If you lift with a force of 92N, the balls acceleration is 2a. Find the weight of the ball, and the acceleration a. I tried solving this via substitution algebra, but the answer ... 
physics
A scuba diver has an air tank with a volume of 0.010 m^3. The air in the tank is initially at a pressure of 1.0x10^7 Pa. Assume that the diver breathes 0.400 L/s of air. Find how long the tank will last at a depth of each of the following. (a) 1.0 m min (b) 10.0 m min Please ... 
Physics
A scuba diver has an air tank with a volume of 0.010 m^3. The air in the tank is initially at a pressure of 1.0x10^7 Pa. Assume that the diver breathes 0.400 L/s of air. Find how long the tank will last at a depth of each of the following. (a) 1.0 m min (b) 10.0 m min Please ... 
physics
A scuba diver has an air tank with a volume of 0.010 m^3. The air in the tank is initially at a pressure of 1.0x10^7 Pa. Assume that the diver breathes 0.400 L/s of air. Find how long the tank will last at a depth of each of the following. (a) 1.0 m min (b) 10.0 m min Please ... 
PHYSICS PLEASE HELP !
Q : As you ride on a loop to loop in a roller coaster, select all the forces that might be acting on you at the top of the loop a: force down due to gravity b: force down from the seat on you c: force up on you from the straps holding you in place d: centripetal force on you ... 
physics help please
Q : As you ride on a loop to loop in a roller coaster, select all the forces that might be acting on you at the top of the loop a: force down due to gravity b: force down from the seat on you c: force up on you from the straps holding you in place d: centripetal force on you ... 
physics and intrumentation
A dose of 07ml contains 25.3 mCi @ 10:30 am. Use the information to answer all. A. What is the concentration of this dose? B. What was the original concentration at 8am? C. What would be the volume of a 25 mCi dose at 11:00am? D. whatis the ratio of concentration a 8am and 10:...