# Math/Physics

215,876 results, page 42

2. ## Physics

1. Given t1/2 to be 0.0137 seconds, how long should it take to reach 87.5% of maximum charge?
3. ## physics

what is the heat capacity of a gold ring that has a mass of 5.00g?
4. ## Physics

calculate the force between two identical charges of 1.0 x 10 exp -9 C separated by 1.0 Cm
5. ## physics

What.is.the.weight.of.a.150.lb.person.in.newtons?.what.is.his.mass.in.kilograms?
6. ## physics

What is the apparent weight of a 55 kg person in an elevator accelerating downward at 2.2 m/s2?
7. ## PHYSICS

IS IT BETTER TO PUSH A GROCERY CART FROM THE BACK,OR TO PULL IT FROM THE FRONT.
8. ## physics

If the speed of an object is doubled its kinetic energy is multiplied by
9. ## Physics

What is the weight (in Newtons) of an object with a mass of 25 kg on the surface of the Earth?
10. ## physics

What is the weight of a 0.2kg toy on or near the surface of the Earth? (g = 9.8m/s2? in newton
11. ## physics

how i cld rise the base of a house wd the help f electric circuit
12. ## Physics

If a person runs the 100m dash in 10.0s, calculate that speed in m/s and km/h.
13. ## Physics

A ball thrown upward at 60.0 m/s has what speed after 5 seconds? What equation do I use?
14. ## Physics

What is the kinetic energy of a 1500 kilogram object moving at 25 m/s?
15. ## physics

How will the current in a wire change as the wavelength of light changes? I have no idea how to do this.
16. ## physics

How will the current in a wire change as the wavelength of light changes? I have no idea how to do this.
17. ## physics

Find the density of a 4.2- kg solid cylinder that is 13 cm tall with a radius of 5.0 cm.
18. ## physics

What,is,the,weight,of,150lb,person,in,newtons?,What,is,his,mass,in,kilograms?
19. ## physics

How much kinetic energy does a 0.03 kg bullet traveling at a speed of 300 m/s have?
20. ## Physics

For centripetal acceleration, if the radius increases, does that mean the angle is decreasing?
21. ## physics

Find the density of a 4.2- kg solid cylinder that is 13 cm tall with a radius of 5.0 cm.
22. ## Physics

Calculate AMA given μk = 0.019 and an angle of 11 degrees.
23. ## Physics

Does an object still possess any kinetic or potential energy at absolute zero?
24. ## physics

What is the acceleration of a 0.30 kg volleyball when a player uses a force of 93 N to spike the ball?
25. ## Physics

Which of the following are the correct units for ACCELERATION? Choose all that apply. m/s2 h mm mm/d2 pc mi NM yd/d km ft/s cm min
26. ## physics(URGENT!!!!!)

8.01xers Can anybody help with the falling ruler. I submission left(
27. ## Physics

Write 2.38x10 to the 6th power in standard notation
28. ## Physics

What is the frequency of an electromagnetic wave if it has a wavelength of 1.4 km? The speed of light is 3 × 10 8 m
29. ## physics

with what speed does a hammer dropped from a height of 23 m strike the ground?
30. ## physics

A fully loaded 737 aircraft takes off at 250 {\rm km/h}.
31. ## physics

when a car goes around an 8-km track in 20-minutes. what is the average speed and velocity.
32. ## physics

What is the period (in seconds) of a simple pendulum 62.0 cm. long, on the earth?
33. ## physics

As the wavelength of a wave in a uniform medium increases, its speed will ?
34. ## physics

if The magnitude of the nuclear spinangular momentum of a nuclei is 15 /2 units. Then what will be the value of I
35. ## Physics 102

What would be the path of the Moon if somehow all gravitational forces on it vanished to zero?
36. ## Physics

A 20 kg block is placed on a 35 degree ramp. What is its true metric weight?
37. ## physics

Calculate the gravity on a planet using a pendulum that has a period of 2.45 s having a length of 1.25 m.
38. ## physics

An automobile with a mass of 1400 kg has a speed of 30.0 m/s. What is its kinetic energy
39. ## Physics

I just have a question....How to know if the volt is -ve or not? and How to know if a charge has deficit or excess electrons ?
40. ## Physics

Part A - What is the magnitude of the electric force on charge in the figure?
41. ## physics

The rate at which distance changes in a time period is called acceleration
42. ## physics

What is the force on the charge located at x = +8.00 cm in Figure 17.40(a) given that q = 5.00 n C and a = 7.00? (The positive direction is to the right.) N
43. ## Physics

Given the following vectors: A = (28, 110°) B = (63, -30°) Determine A + B. Specify the sum as both Cartesian and polar.
44. ## physics

if The magnitude of the nuclear spinangular momentum of a nuclei is 15 /2 units. Then what will be the value of I
45. ## Physics

why the ray reflected by the prism is brighter than that by the plane mirror?
46. ## Physics

What is the application of simple harmonic motion to our daily lives?
47. ## PHYSICS

ADDITIONAL INO ADDED AT BOTTOM a spectator at a hockey game is sitting in a seat situated 10.4m above ground leve. if the spectator has a mass of 52.6 kg, calculate her gravitational potential energy relative to: a)ground level Eg=mgh =52.6X9.8X10.4

How do you determine the ymax? I know you have to use Q which I have values that were given to me as well as vo values but I am not sure what to do with these values. Physics - drwls, Saturday, September 15, 2012 at 1:29am Define your terms. I have no idea
49. ## bobpursley

ok im doing my physics homework and we have to submit the answers online. i keep getting these questions wrong and i only have one more try can someone please tell me how to work it? a 2.5 kg otter starts from rest at the top of a muddy incline 94.6 cm
50. ## math

need to make a venn diagram using 3 circles. A survey on subject being taken by 250 students at a certain college revealed the following info: 1. 90 were taking math 2. 145 were taking history 3. 88 were taking english 4. 25 were taking math and history 5.
51. ## Math

Could someone please help me with this math problem. I am lost on trying to solve this math problem. Add. Simplify if possible. s+r/sr^2 + 2s+r/s^2r Thanks.
52. ## Physics Newton law

A 10O0Kg elevator is hoisted upward from rest by a cable. In the first two seconds there is an 1100N tension force in the cable hoisting the elevator. What is the speed after two seconds and how far has it travelled ? Get the acceleration first. Tension=mg
53. ## Physics help

Are you sure that's how you do #4 because they have 2 different directions. I need physics help. I don't understand how to do these questions. Can someone show me what I should use? and explain. I'll do calculations by myself. A stationary curling stone is
54. ## physics multiple choice

A 3.00 lb. physics book rests on an ordinary scale that is placed on a horizontal table. The reaction force to the downward 3.00 lb force on the book is A. an upward 3.00 lb force on the scale due to the table. B.an upward 3.00 lb force on the book due to
55. ## physics multiple choice

A 3.00 lb. physics book rests on an ordinary scale that is placed on a horizontal table. The reaction force to the downward 3.00 lb force on the book is A. an upward 3.00 lb force on the scale due to the table. B.an upward 3.00 lb force on the book due to
56. ## Math

16.Eliot spent 24 minutes solving 8 math problems.At that rate, how many math problems can he solve in 54 minutes? a.12 B.16 C.18 D.24 A? Can you explain why it isnt a
57. ## Physics repost

Posted by Mary on Saturday, October 6, 2007 at 5:13pm. Suppose you wish to make a solenoid whose self-inductance is 1.2 mH. The inductor is to have a cross-sectional area of 1.2 10-3 m2 and a length of 0.048 m. How many turns of wire are needed? For
58. ## Physics

Two 0.09g pith balls are suspended from the same point by threads 40cm long. (Pith is a light insulating material once used to make helmets worn in tropical climates.) When the balls are given equal charges, they come to rest 19 cm apart What is the
59. ## Research and Statistics

I want to ensure I've done this problem correctly. Thanks! 3. In one elementary school, 200 students are tested on the subject of Math and English. The table below shows the mean and standard deviation for each subject. Mean SD Math 67 9.58 English 78
60. ## Re: PHYSICS

"Relative" is an important word. Block L of mass mL = 1.90 kg and block R of mass mR = 0.500 kg are held in place with a compressed spring between them. When the blocks are released, the spring sends them sliding across a frictionless floor. (The spring
61. ## Physics

A planet has two satellite moons. Moon X has an orbital period of 2.13 days. Moon Y has an orbital period of about 3.53 days. Both moons have nearly circular orbits. Use Kepler's third law to find the distance of each satellite from the planet's center.
62. ## phsyics

Posted by MELANA on Thursday, October 18, 2007 at 5:14pm. An object in equilibrium has three forces exerted on it. A 30 N force acts at 90° from the x-axis and a 44 N force acts at 60° from the x-axis. What are the magnitude and direction of the third
63. ## physics

An inquisitive physics student, wishing to combine pleasure with scientific inquiry, rides on a rollercoaster sitting on a bathroom scale. (Do not try this yourself on a rollercoaster that forbids loose heavy packages.) The bottom of the seat in the
64. ## Physics

A space station, in the form of a wheel 197 m in diameter, rotates to provide an “artificial gravity” of 2.5 m/s2 for persons who walk around on the inner wall of the outer rim. The rate of the wheel’s rotation in revolutions per minute that will
65. ## Math and Music

I have to do a presentation on how math and music relate. I have found some things and facts but everything is so complicated. If someone could help explain to me how I can narrow my topic down and make a presentation that is simple but effective. It can
66. ## 1st grade Math Fair

My school is planning a Math Fair. Each grade will compete with same grade team members. The rules are: TO make it fun and use Al. math strands . The problem is I don't know where or how to begin this project. Can anyone help?
67. ## physics

determine the pressure of a 20 lb force is applied to an area of 10 inch squared
68. ## Physics Class

The equation describing the motion of an object is y=0.8cos(4.2t+0.32). What is its period?
69. ## Physics

How long is Mayra, a ballerina, in the air when she leaps straight up with a speed of 1.23 m/s?
70. ## physics

What is the electric field intensity of a point 15cm from a charge 15microcoulomb
71. ## physics

how do you compare mass and weight on the earth, moon, and outer space?
72. ## physics

An object has a length of 5.0 cm, a height of 3.0 cm and a width of 15.0 cm. It has a mass of 24 grams. What is its density?
73. ## physics

a year ago she measured 98cm from her tree . now it 1.1m tall how much has it grown
74. ## physics

What is the weight of each of the following masses at Earths surface? A) 25g. B)102kg. C) 12mg
75. ## Physics

If I know the length of all 3 sides in a right angle triangle, how do I get the degrees of the other angles? Which formula do I use again?
76. ## physics

A certain car can go from 0 to 100 km/h in 10 s. If the engine delivered twice the power to the wheels, how many seconds would it take?
77. ## physics

the air pressure in the tyres of a car increases during driving.Explain.
78. ## physics

You throw a ball straight up at 25 m/s. How many seconds elapse before it is traveling downward at 13 m/s? 1 s
79. ## physics

A car traveling at 5.9 m/s accelerates at 2.12 m/s2 for 19.5 seconds. To the nearest meter how far does it travel.
80. ## physics

The time required for a car to reach 28.5 m/s from rest, accelerating at 3.70 m/s2 is __________ .
81. ## physics

how is a stone tied on an elastic string balanced when in air and water ?
82. ## Physics

Identify the correct neutrino (Ve, Vµ, Vτ or their anti-particles) a) π+ —> p° + e+ + v b) π+ —> p° + µ+ + v c) τ+ —> e- + v + v Please explain why too...I'm really lost. I'd appreciate any help.
83. ## physics

A rock is dropped from a 154-m-high cliff. How long does it take to fall (a) the first 77.0 m and (b) the second 77.0 m?
84. ## Physics

an elastic band is stretched a distance of 0.150m by a force of 100.0
85. ## Physics

If you are viewing a hologram and you close one eye, will you still perceive depth? Explain.
86. ## physics

a student driving a car travels 10.0 km in 30,0 min.What was her average speed?
87. ## physics

determine the pressure of a 20 lb force is applied to an area of 10 inch squared
88. ## physics

The energy of the em waves is of the order of 15 kev.to which part of the spectrum does it belong?

Which of the following is closer to a guess? hypothesis<<<<< law question theory
90. ## Physics/chemistry

Describe the partcle Theory of a HOt air Balloon?
91. ## physics

A lizard accelerates from 2m/s to 10m/s in 4 seconds. What is the lizards average acceleration?
92. ## Physics

Two point charges of magnitude 2.0 X 10^-7 C and 85 X 10^-8 C are placed 12 cm apart .What is the field intensity of each charge at the site of other ?
93. ## physics (motion)

the initial velocity of a particle is u (at t=0) and acceleration f is given by at.which relation is valid: (a)v=u+at^2 (b)v=u +at^2/2 (c)v=u+at (d)v=u
94. ## Physics

A stone weighs 34.0 N. What force must be applied to make it accelerate upward at 4.00 m/s2?
95. ## PHYSICS

A hypothetical planet has a mass 1.49 times that of Earth, but the same radius. What is g near its surface?
96. ## physics

where would the image of a 4.0 cm tall object that is 12 cm in front of a flat mirror be located?
97. ## physics

a 40kg girl climbs a vertical ladder at .5 m/s. what is her power output?
98. ## PHYSICS

WHAT IS THE MASS AND WEIGHT OF 1420LB OF SNOMOBILE AND 412KG OF HEAT PUMP?
99. ## physics

the rate at which position changes with time is called acceleration. true or false?
100. ## physics

Calculate the momentum of a 100 kg object moving with velocity 10m/s