Math/Physics

208,687 results, page 39

Physics

When striking, the pike, a predatory fish, can accelerate from rest to a speed of 3.6 m/s in 0.11 s .

Physics

An adventurous aardvark arduously ambles from (3.0, 2.0) m to (−4.0, −2.0) m. What is the displacement in polar coordinates?

Physics

What’s the deceleration of a juggernaut to stop from 45m/s by constantly decelerating at 9m/s 2(squared) ?

Physics

Find the displacement in cubic meters of a boat weighing 4710 N.

Physics

PLEASE HELP! I'm doing a physics demonstration, and in part of it I'm trying to explain why steel wool burns and normal steel doesn't. I know it's something to do with the smaller surface area and/or mass but I don't know WHY it burns because of this. Can anyone help me? I'm ...

Three people are trying to hold a lion still for the vet. The lion, in the center, is wearing a collar with three ropes attached to it and each person has a hold of the rope. charlie is pulling in the direction of 62 degrees west of north with a force of 175 newtons. Sam is ...

Math

Camilles math teacher described a quadrilateral with 2 pairs of parallelvsides and 4 lineage of symmetry. Which of these quadrilaterals must have the characteristics that Camilles math teacher described? A. Trapeziod B. Square C. Rhombus D.parallelogram

Math

Mario has a ribbon that is 5/8 yard long if she cuts her ribbon into 6 equal pieces what will be the length of each new pieces? I really need some help this test i'm doing has 50 math questions. And i'm really bad at math.

Math

Ten students took a math exam. As the teacher evaluated the math exams, she noticed that 8 of the ten students scored above the median. Is this possible? Why I am leaning towards yes it is possible. Kinda confused

physics

How do i go about this question? Suppose a car is traveling at 20.0m/s, and the driver sees a traffic light turn red, After 0.530s has elapsed (the reaction time), the driver applies the brakes, and the car accelerates at 7.00m/s2. What is the stopping distance of the car, as ...

math

During one school year, Billy Bob earned \$25 for each Math test he passed and was ined \$50 for each Math test he failed. By the end of the school year, Billy Bob passes 7 times as many Math tests as he failed and he had a total of \$375. How many tests did he pass?

English

At school, he learns 10 subjects such as math, science, social studies, computers, ethics, etc. He is in math class now. He has a cell phone. He is sitting at the back. One of his friends calls him and asked "Which class are you in?" What is the answer to the question. 1. I'm ...

Math

I'm studying to take a math placement exam and it has been a long time since I've taken a math class. Can someone please give me a step to step solution of these: A.Simplify: 8x/[2^(x-1)] Answer = 2^(2x+1) B.Simplify: (2^x)*[4^(x-1)] Answer = 2^(3x-2)

math

Please help me with this problem: Jhon missed 5 points out of 100 points on his math test. What decimal number represents the part of his math test he answered correctly? my answer is 0.95. my work: 100-5=095

physics

An inquisitive physics student and mountain climber climbs a 50.0 m cliff that overhangs a calm pool of water. He throws two stones vertically downward, 1.00 s apart, and observes that they cause a single splash. The first stone has an initial speed of 2.08 m/s downward. (a) ...

Math

There are 356 rows of tress growing in the field. There are 299 trees in each row. How many trees are growing in the field? Please help am stuck on this last math problem not good at the type of math problems.

Math

If I spend t hours every night on my homework and 1/4 of the time studying math, what equation can I write to represent the number of hours I will spend doing my math homework during the next 5 days?

Math

You are a letter and now your in a math problem explain to the numbers what your purpose is, how you are a friend, and how you solve algebra problems. Create a math problem and solve it. Use the letter and the number as the characters. Please tell me that this is not a ...

Math

I lost my paper for the Math Riddle Pizazz page 167 about solving systems of equations and I no longer have the problems. (It is the "did you hear about the farmer who gave birdseed to his cows..." page) What are the math problems for it?

math final studying

beth scored 75 on her first math test. she scored 20 % higher on her next math test. what did she score on the second test?

Math

I don't remember sampling methods... i do know that there are three and one of them is litteraly called 'random'. if i can please be reminded of the methods i can finish the last 3 problems of my math.... i don't like math especially if you have a field reading test for the ...

Physics

Need Help with physics! Two cars drive on a straight highway. At time t = 0, car 1 passes mile marker 0 traveling due east with a speed of 17.0 m/s. At the same time, car 2 is 1.3 km east of mile marker 0 traveling at 30.0 m/s due west. Car 1 is speeding up with an ...

The "karat" is a dimensionless unit that is used to indicate the proportion of gold in a gold-containing alloy. An alloy that is one karat gold contains a weight of pure gold that is one part in twenty-four. What is the volume of gold in a 20.0 karat gold necklace whose weight...

math, algebra

what are some challenges about working with rational expressions? Math is a language. Getting it precisely right is a lot easier than describing it in a vague statement in English such as you ask. Is there a chance you can change teachers? If so, I recommend it. THe focus of ...

Math

Sorry if this is a lot of questions but What do you hear when you hear the word math? What do you believe when you hear the word math? What do you think when you hear the word math?

Math

Hi again, I don't know how to solve this problem. cube root of(cube roof of(x-1)-1) It would be ninth root of 1/(x-1) Thank you. Do you think you can explain to me how did you solve it? what are your feelings about math, rate your math anxiety, and describe what coping ...

Math

I have trouble with math, I'm very good at science and when I grow up I want to be a zoologist, the problem is that. MATH I try to pay attention at school but the teacher is very boring and I'm one of those people that can't pay attention when bored. Any tips?

physics- torque

1. Find the magnitude of the torque produced by a 3.0 N force applied to a door at a perpendicular distance of 0.25 m from the hinge. 2. A simple pendulum consists of a 3.0 kg point mass hanging at the end of a 2.0 m long light string that is connected to a pivot point. a. ...

physics hey bob

you help me solve this problem. but how am i suppose to if i don't know the mass of the car? on a level road the stopping distance for an automobile is 35.0m for an initail speed of 90 km/hr what is the stopping distance of the same automobile on a simalr road with the slope 1...

Physics

posted this question this morning but I'm not sure of the response Damon provided. I did it once but then I updated it later in this at the bottom- please check booth of my answers. If you were in a rotor style ride and the riders accelerate until the speed of ride is reached...

Algebra 2

Well I'm curently taking this class as a sophmore and have taken geometry freshmen year of high school and also I am taking physics at the same time and in math class when I'm asked to factor i go absolutley nuts because guessing numbers is just no my thing... I need solve for...

Math (Combinatorics)

40 students attended the brilliant summer camp at Stanford University. "k" of the students at the camp are working on math problems and the others are working on non-math problems. One of the camp mentors noticed that whenever all the students were partitioned into 2 or more ...

physics

We're in class with a SIL decibel meter up front, and everyone is screaming at the top of their lungs, hooting and shouting and pounding on their desks, shooting off firecrackers, its Phys 1240 gone wild...and the meter is reading a reasonably steady sound intensity level of ...

Physics

For the answer to the following post, do you mean that the frequency does not depend on the radius? Posted by Johnny on Saturday, March 13, 2010 at 5:49pm. The frequency of circular motion for a charged particle moving around in the presence of a uniform magnetic field does ...

statistics

The box plot below summarize the distributions of SAT verbal and math scores among students at an upstate New York high school. 300 400 500 600 700 800 data Whic of the following statements is false? 1. The range of the math scores equals the range of the verbal scores. 2. The...

PHYSICS

Using the motor principle explain why a motor is rotating in the direction indicated. I seriuosly have no idea, please help explain this theory to me. PHYSICS - drwls, Saturday, February 6, 2010 at 2:15pm To help you answer that question, I'd need a figure that shows what kind...

MATH

I get really confused with math . I am great with all of the other subjects . In fact I get all B's except for Math , I get 1's !!! I really need help with it . I ask for help but whenever people help me and put it in the most simplest way possible .. I still don't get it . I ...

Physics. Urgent

A vertical spring with a spring constant of 450 N/m is mounted on the floor. From directly above the spring, which is unstrained, a 0.30 kg block is dropped from rest. It collides with and sticks to the spring, which is compressed by 3.0 cm in bringing the block to a momentary...

math/What is a interval in math terms?

doe sanyone know what a interval is in math terms? i need the real definition and it is hard and i can not find it anywhere? can anyone help me? thanks,you rule Kayla an interval is "a mathmatical expression of 'betweeness' a---------b or a<x<b this can also be written ...

Math

I need help with my math homework.I searched for homework help forums and I found the Jiskha Website on the Google Website so this is my first time.I am new. Math Homework: What is the value of number 3 in 2,539? What is the value of number 9 in 4,879 What is the of number 6 ...

Math

John has scores of 88,73,90,85,93 on five math quizzes. What scores must john earn on the next math quiz to have a mean quiz score of exactly 88?

math

Decide which variables described is likely to have a normal or near normal distribution a. the number of courses remaining until graduation for the students in a small liveral arts college b. the SAT math scores for students in an advanced placement math class i think the ...

physics

You are flying to Chicago for a weekend away from the books. In your last physics class, you learned that the airflow over the wings of the plane creates a lift force, which acts perpendicular to the wings. When the plane is flying level, the upward lift force exactly balances...

physics

You are flying to Chicago for a weekend away from the books. In your last physics class, you learned that the airflow over the wings of the plane creates a lift force, which acts perpendicular to the wings. When the plane is flying level, the upward lift force exactly balances...

Physics

A small circular object with mass m and radius r has a moment of inertia given by I = cmr2. The object rolls without slipping along the track shown in the figure. The track ends with a ramp of height R = 3.0 m that launches the object vertically. The object starts from a ...

physics

A physics professor is going ice skating for the first time. She has gotten herself into the middle of an ice rink and cannot figure out how to make the skates work. Every motion she makes simply cause her feet to slip on the ice and leaves her in the same place she started. ...

Physics

Hi guys, need help with this problem for physics and im having trouble visualizing it. Kathy and mountain climber climbs a 55.0 m cliff that overhangs a calm pool of water. He throws two stones vertically downward, 1.00 s apart, and observes that they cause a single splash. ...

Physics

Ammeter 1 reads 0.20 A. a. What should ammeter 3 indicate? b. What should ammeter 4 indicate? Given: RA = 22-OHM RB = 13-OHM A1 = 0.20 A Ammeter 2 reads 0.15A. a. Find the voltage across the 22-ohm resistor? b. Find the voltage across the 15-ohm resistor? c. What is the ...

Physics

If you have steel and wood at 0 Celsius, which is colder Both are the same temperature.

Physics

If the earth had no atmosphere, what would the color of the sky be during the day?

Physics

what is the angular speed, in rad/s, of a point on the surface of Jupiter at latitude 72 degrees N?

physics

why are the lengths of days in spring and autumn the same? if the sun does not set, why is it so cold?

Physics

When is your weight normal, higher, or lower while moving up and down in an elevator?

Physics

1. How can voltage be induced in a wire? Can someone help me figure out an answer to this? please

Physics

what must be the minimum velocity of a missile if it is strike a target a 100m away?

physics

Why will a magnet attract an ordinary nail or paper clips but not a wooden pencil?

PHYSICS QUESTION!!!!

how do you find the height or time? is it h=squreroot4.9/t or h=squareroott/4.9 or is it something else complettly???

physics

need the formula to find jupiters orbital period in earth years

physics

If,an,object,is,at,rest,there,must,be,no,force,acting,on,it.Is,this,statement,correct?,Explain!

Physics

A person with a mass of 85kg. How much in newtons do they weigh on the earth and the moon?

Physics

When you look at a distant galaxy through a telescope, how is it that you're looking backward in time?

physics

How much would a 60-kg person weight on the Moon where the gravitational field has a magnitude of 1.6 N/kg?

physics

How long does it take a car to travel 196 meters when accelerating at 8 m/s2 from rest?

Physics

Can we Connect two or more batteries of different voltage in parallel circuit?

Physics

Assume the utility rate to be \$.20/kWh. What is the cost of purchasing 10kW for 1.0 hour?

Physics

Why is Young's experiment more effective with slits than with the pinholes he first used?

physics

Find the intensity level 10m from a 0.24 watt source of sound energy?

Physics

How can you use a curved mirror to make a telescope? If possible, if there a diagram somewhere?

Physics

Why does light striking a metal surface eject only electrons, not protons?

Physics

An electron and a proton are traveling at the same speed. Which one has the longer wavelength?

Physics

Find the length of a bridge if it is known that the steel in the roadbed expands by 0.52 m when the temperature changes from +2 to +30°C.

Derivation of Physics Equation

How do we derive these laws: (most of the time, the numbers are subscript) v'2 = v1 * ( (2 * m) / (m1 + m2) ) + v2 * ( (m2-m1) / (m1+m2) ) & v'1 = v1 * ( (m1-m2) / (m1+m2) ) + v2 * ( (2 * m2) / (m1 + m2) )

physics/science

i don't understand why radioactive waste is stored underground is it because it is a harmful substance

Physics

Which color light is the result of a greater energy transition, red or blue?

Physics check

The spectral lines for elements are sometimes called atomic..... spectra?

Physics check

Rank the following transitions in order of low to high frequencies: 3-2; 4-3; 2-1; 5-4; 5-3; 3-1; 4-2. 5-3; 4-2; 3-1; 5-4; 4-3; 3-2; 2-1 ?

physics

'perpetual motion' is ruled out of the realm of possibility because of which law of thermodynamics?

Physics

What are differences and similarities of the electric charges (+ and -) and the magnetic forces (North and South)?

physics

what is the maximum downward accelaration you can give your hand in m/s^2 i was thinking 10 due to gravity

physics

can anyone give me a site that would explain about torque and equilibrium.. thanks a lot.. :)

physics

how do you find the verticle component of velocity of a projectile just as it strikes the ground?

Physics

why isn't it a good idea to spread salt on the road in really cold climates?

physics

If the density of a medium is 1000 kg/m3 and the propagation speed is 1540 m/s, the impedance is rayls.

physics

why is it harder to maintain costant accleration rather than cosntant velocity when walking

physics

Describe the differences between the force of gravity and buoyant forces on a swimmer.

physics

why would you wear a white t shirt opposed to a blak one in winter

gr.10 physics

could someone please help me with this? Rearrange and simplify for r when A=3.14r^2 by the way, 3.14 is supposed to be pi, but i don't know how to write it...

Physics

Why is the momentum in a spaceship traveling in space not conserved? Can someone please explain? thanks

Physics

If the current in a wire is 0.1A, how long will it take for 10C of charge to pass through it?

physics

What is the R-factor of insulation and what does it equal? i have looked everywhere and can not seem to find it.

Physics

How can you prove that acceleration due to gravity is the same in a resting and moving frame?

physics

If a hair dryer is rated at 800W, how much energy does it require in 3 min?

Physics

KNOWNS: Diverging (convex) mirror Radius of curvature = 60 cm (f = 30 cm) M = 1/5 Hi = 20 cm UNKNOWNS: Ho? Di? Do? EQUATIONS: 1/Do + 1/Di = 1/f M = Hi/Ho = -Di/Do

physics

why is the color of the sky orange during sunrise and sunset? --pls help me on here-- thanks :)

physics

compare and contrast sound and electromagnetic waves in terms of types, speed, etc.

physics

compare and contrast sound and electromagnetic waves in terms of types, speed, etc.

physics

compare and contrast sound and electromagnetic waves in terms of types, speed, etc.

Physics

Does the axis system chosen affect the magnitude of potential energy? I say yes

physics

I have the energy and frequency of a light source and I need the wavelength and colour. What do I do?