Math/Physics

214,364 results, page 37

1. Physics (easy level)

What would a Potential energy to velocity^2 graph be?
2. Physics

Who originally designed the planetary model of an atom? Bohr or Rutherford
3. physics

Given three vectors a~=Ài~À4j~+2k~ , b~=3i~+2j~À2k~ , c~=2i~À3j~+k~ , calculate a~Á(b~c~)
4. physics

At the end of a race a runner decelerates from a velocity of 7.00 m/s at a rate of 0.300 m/s2.
5. Physics

Why does the volume of air bubble increase as it rises toward the surface?
6. Physics

If Jenn walks at a speed of 1.75 m/s for a total of 3.0 minutes, how far has she travelled?
7. physics

A vector has a magnitude of 18.0 cm and makes an angle of 103.0° with the positive x-axis.
8. physics

Find the area enclosed by the curve y=sinx and the x-axis between x=0 and x=22/7
9. physics

Find the area enclosed by the curve y=sinx and the x-axis between x=0 and x=22/7
10. physics

Find the area enclosed by the curve y=sinx and the x-axis between x=0 and x=22/7
11. physics

Find the area enclosed by the curve y=sinx and the x-axis between x=0 and x=22/7
12. physics

Find the area enclosed by the curve y=sinx and the x-axis between x=0 and x=22/7
13. physics

An 80kg astronaut has a weight of 120N. How many radii above the earth is he?
14. physics

an electron (m= 9.11 x 10^-31 kg) and a proton (m+ 1.6 x 10^-27 kg) are separated by 1.0 x 10^-10 m. what is the gravitation force between them? help please!
15. Physics

If a 1.5V battery stores 5.0kj of energy,for how many minutes could it sustain a current of 1,2A?
16. physics

find the impulse on a baqseball that is hit 80N of force in a time of 0.52 s
17. Physics

Classify the following measurements as scalar of vector quantities. A.) 15 s B.) 4.2 m ( up) C.) 100 km/h (S) D.) 2.8 kg
18. physics

Calulate the amount of substance io 120g of trioxocarbonate (iv)ion,co2
19. physics

Calulate the amount of substance in 120g of trioxocarbonate (iv)ion,co2
20. physics

a cannon fire a .453 kg shell with initial velocity vi=9m/s in the direction 50
21. Physics

Find positions on the x axis for the charges Q1 = -1 C and Q2 = +3 C so that the electric field is zero at x = 0.
22. Physics

I got 240mph by using a diagram but my lecture said i am wrong
23. physics

if a proton and an electron are released when they 2.0 x 10^-10 m apart, find the initial acceleration of each of them
24. physics

What voltage is applied to the 5.00 µF capacitor of a heart defibrillator that stores 35.0 J of energy? In kv.
25. physics

610 C passes through a flashlight in 0.510 h. What is the average current?
26. Physics

How long in seconds does it take for a car accelerating at 3.5m/s2 to go from rest to 120km/hr
27. Physics

what is the power dissipated in an ac circit in which current v=230sin(wt+90) and I=10sin(wt)...plz help me
28. physics

The units of heat are equivalent to those of which one of the following quantities?
29. Physics

How much work must be done on a 500-kg car to accelerate it from 29-km/hr to 112-km/hr?
30. physics

determine the magnitude of the centripetal force that acted on the whirling ball??
31. physics 11

Displacement i sgivenby x=2+3t+4t2. Find the value of instantaneous acceleration.
32. Physics 11

Displacement is given by x=2+3t+4t². Find the value of instantaneous acceleration.
33. physics

Why projectiles launched at complimentary angles have the same range?
34. Physics

How can we find the resultant force if the mass and SPEED are given?? Help me please!!
35. physics

how much energy is stored in a 9 volt battery rated at 10 a hour
36. physics

Show that the average speed of a rabbit that runs a distance of 30 m in a time of 2 s is 15 m/s.
37. Physics

What is the momentum of a wavelength= 0.015nm X-ray photon? p= in kg*m/s Please help I am confused. Thank you.
38. Physics H

What is the speed of light moving through a medium of index of refraction 2.45?

What is the potential difference between Points A and B? E=100N/C AB=.2M degrees of 30
40. physics

find the %error in the measurement of refractive index of glass. the values was 1.54,1.53,1.44,1.54,1.56& 1.45.
41. physics

Caculate the work done when a force of 20N strecthes a spring by 50mm
42. physics

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

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

How much mechanical energy was lost during the ball's fall?
45. sonogram physics

How much time is required to image a structure at 5cm.?

If the period of an AC sine wave is 180 ms, the frequency is
47. Physics

How far do you travel if you start at 5.6 m/s and slow down at 2.5 m/s until you stop?
48. physics

how to show with the help of a model that resistivity of a conductor increases with increase in temperature?
49. Physics

The pendulum is transported to another planet where the acceleration due to gravity is smaller.
50. physics

what is the kinetic energy of 1,200-kg roadster moving at a rate of 88km/hr?
51. physics

What is the wavelength (m)of an earthquake that shakes you with a frequency of 11.5 Hz and gets to another city 85.0 km away in 12.0 s?
52. physics

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

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

find the acceleration produced by a net force of 300.0 N on a mass of 0.75 kg.
55. physics

If body is rotating 30r.p.m in clockwise what is angular velocity and it direction
56. physics

how did nikola tesla change the world? and why students do not know about him and his inventions?
57. Physics

if im plotting a graph: Time Squared vs Length What will be the unit of my gradient ?
58. Physics

Your velocity changes from 50 m/s to the left to 10 m/a to the right in 15s, what is your average acceleration?
59. physics

What would be the resultant vector with an angle of 30° with the +x axis and has a y component of 8.9 Newtons?
60. physics

What would be the resultant vector with an angle of 30° with the +x axis and has a y component of 8.9 Newtons?
61. Physics

A students adds two vectors with magnitude of 200 and 40 , what is the resultant ?!
62. physics

. If the momentum of an object is tripled, its kinetic energy will change by what factor?
63. physics

Show that the time for the voltage in the RC circuit to rise to (Vo/2) "half-max" is t1/2 = T ln 2
64. physics

Which of the following properties of a ball is conserved as it falls freely in a vacuum?
65. Physics

Acoustics. How do engineers design buildings to reduce noise pollution?
66. Physics

A 1400-kg race car can go from 0 to 90km/h in 6.0s . What average power is required to do this?
67. Physics

How to add vectors in terms of velocity by using vector chart
68. Physics

Problem2-AFor A=-I+2j +5k and B=2j-3k,find: a) The dot productA.B b) The angle between the A and B
69. Physics

Why is warm water used for bathing during cold weather?
70. PHYSICS

Why era traits/scientific characteristic important in the field of Science?
71. PHYSICS

Why is a control set-up being done in conducting an experiment? Give example.
72. physics

true or false an object with a mass of 9.0 kg has an acceleration of 3 m/s. the force acting on it is 3n
73. Physics Classical Mechanics

Thanks to everyone who helped me out. I got through.
74. Physics

A rocket is fired with 9.37 km/hr, find the maximum altitude. (no air resistance)
75. physics

Find the total displacement of a mouse that travels 1.0m north and then 0.8m south.
76. physics

Find an expression for the energy densityin terms of stress and strain.
77. Physics

how much energy is required to change 40 g of ice at -10 C to steam at 110 C?
78. physics

What is the maximum amplitude of the resultant waves at the position of 2 . 7 m along the x -axis?
79. Physics

You throw a beanbag in the air and catch it 3.3 seconds later. How high did it go?
80. Physics

A piece of metal has a mass of 85 cg and a volume of 450L. What is it's density in g/cm3?
81. physics

If you double the radius of a sphere, its volume increases by what factor? A. 8 B. 6 C. 2 D. 4 I thought maybe C.2 or D.4
82. physics

An astronaut shoots you in space given that the bullet is weightless, could it injure you?
83. physics

Complete the following nuclear reaction: ^16,v8 O + ^4, v2 He → ________ + ^19, v10 Ne 1p 1n 2H 3H
84. Physics

convert 220 degree into radians show work.
85. Physics 1

What is the rotational kinetic energy of the Earth in its orbit around the sun?
86. physics

why salt mixed in water before keeping egg and boil it?
87. physics

explain why we sweat when it is hot? How does it help us? In terms of heat and temperature what happens
88. AP Physics B

how much heat does it take to melt 4.2 kg of ice at 0c? Answer in kcal
89. physics

find the moment of inertia of the earth. Radius is 6,000 km and mass is 6 x 10^24 kg
90. Physics

How long would the year be if the distince of the earth from the sun where 20% more?
91. Physics

Resolve a force of 7.5N acting at an angle 40 to its horizontal an vertical components.
92. physics

How much heat is added to 10.5 g of ice at -20.0°C to convert it to steam at 123.5°C?
93. Physics

Am i correct? If a 10.0 kW device pulls 20.0 A of current, what voltage exists across it? A. 5.0 *10^0 V B. 5.0 *10^1 V C. 5.0 *10^2 V D. 5.0 *10^3 V <---
94. Physics

Explanation of twin paradox in regards to special relativity theory.
95. physics

How many electrons pass through a lamp in 3 minutes.If the current is 300 ma?
96. physics

The escape velocity on the moon is: a) 5.64x10^6 m/s b) 1.68x10^3 c) 160 m/s d) 2.38x10^3 m/s
97. physics

If Zulfiqar fold this colored paper as shown in the image, which cube will he get? A C B D
98. physics

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

When an object travelling at 12.7 m/s [E] speeds up to a velocity of 21.5 m/s [E] in 3.45 s, the magnitude of the acceleration is __________m/s2.
100. Physics

At what distance from the earth's surface will a mass of 40.0 kg be just 385.0 in weight?