# physics( i have no idea how to go about gettign th

79,978 results, page 81

1. ### physics

Why do the magnetic poles of cans reverse when turned upside down?
2. ### Physics

Two objects are moving about so that their total momentum is zero. What can be said about their kinetic energy?
3. ### Physics

What is the peak wavelength and observed color of a 50,000 K star?
4. ### physics

if the earth exerts a force 300n how much does the body weigh?
5. ### Physics

How far apart are a proton and electron if they experience an electric force of 5.10N?
6. ### physics

does each of the two lenses used in a microscope produce a magnification of the object being viewed?
7. ### physics

what is the speed of 1kg object when the kinetic energy is 1 joule
8. ### physics

The maximum displacement of a vibrating body on either side of its mean position is known as its
9. ### Physics

How does the length, thickness, and temperature of a wire effect the resistance?
10. ### physics

a car is moving at 40km per hour what is the velocity in meters per second?
11. ### science[physics]

why is the pressure more on ground when a person is walking than when he is standing ?
12. ### Physics

Find the modulus direction cosin unit vector 1) 4a-2b+3c (2) a-7b+5c (3)4a-3b+c
13. ### Physics

How come heat engines are more efficient when run at high temperatures?
14. ### Physics

A__2Min.______B_____2Min.________C This makes no sense to me. Can you amplify?
15. ### Physics

Find the modulus direction cosin unit vector 1)4a-2b+3c, 2)a-7b+5c, 3)4a-3b+c.
16. ### physics

why salt mixed in water before keeping egg and boil it?
17. ### Physics

If a clock says 10:30 am and the second hand rotates 960 degrees what time would it be?
18. ### Physics

Two identical charges are 36 mm apart. The electrostatic force between them is 1.3 N. What is the size of each charge?
19. ### physics

which is more work pushing with 115N over 15 m or lifting 20N 10meters
20. ### Physics

what maximizes our ability to recover elastic potential energy?
21. ### Physics

A 55 kg skier is going down a slope with an angle of 47 degrees. Mk= 0.15. How fast is he going after 6 seconds?
22. ### Physics

If 7.20 kg of ice at -5.00°C is added to 12.0 kg of water at 30°C, compute the final temperature.
23. ### Physics

What's the difference between Inertia and Impulse? Because the definitions sound really similar.
24. ### physics

a ramp is 0.5m high and has a slope of 4m long.what is the mechanical advantage?
25. ### physics

What is the acceleration for the turtle moving with constant velocity of 5m/s to tghe right
26. ### physics

A skier slides down a slope to the left at a constant speed.
27. ### physics

in what direction should a force be applied to produce maximum torque.?
28. ### Physics

How much work is required to stop an electron (m= 9.11 * 10^-31 kg) which is moving with a speed of 1.80×10^6 m/s?
29. ### physics

if velocity vector is changing but speed is constant, can there still be work
30. ### physics

What forces are acting on a puck that is on an air hockey table?
31. ### physics

what is the kinetic energy of a bear with a mass of 65 Kg and running at a speed of 20 m/s ?
32. ### Physics

Describe how the range of a projectile varies with launch angle.
33. ### Physics

Explain why a balloon expands when heated and contracts when cooled.
34. ### Physics

How much energy is released when 250 kg of anthracite coal burns
35. ### Physics

Light elements formed in Big bang theory ?
36. ### physics

Find modulus,Direction cosines,Unit vectors of (1)4a-2b+c,(2)a-7b+5c,(3)4a-3b+c.
37. ### physics

Find modulus,Direction cosines,Unit vectors of (1)4a-2b+c,(2)a-7b+5c,(3)4a-3b+c.
38. ### Physics

In order to stay in phase, do two waves need to have the same frequency? The same amplitude?
39. ### physics

what is the particle's average velocity in the y direction vy between t=0.200s and t=0.300s?
40. ### physics

How much energy is produced when the sun converts one kg of hydrogen into helium?
41. ### physics

. Two positive point charge of 12 μC and 8 μC are 10 cm apart. The work done in bringing them 4 cm closer is,
42. ### Physics

A mass accelerates uniformly when the resultant force acting on it is......?
43. ### Physics

What is the relative humidity on a 25.0 °C day when the air contains 14 g/m3 of water vapor?
44. ### physics

Athelet meseret defar runs at 10m/s. How long will take her to go?
45. ### Physics

A and B are vectors in the same plane. If A= 8i+6j. Find the vector B such that |A+B| = 14.14 units and A is perpendicular to B.
46. ### physics highe school

Explain the different sections of the graph in as much detail as you can?
47. ### Physics

How does the index of refraction relate to the speed of light in a substance?
48. ### physics

what is the value of electric field intesity at a point between two co centric sphere
49. ### Physics

What is the wavelength of a 512 Hz sound wave in 20 degree C air?
50. ### physics

Two point charges, +3.30 µC and -5.50 µC, are separated by 1.29 m. What is the electric potential midway between them?
51. ### physics

What voltage is required to store 6.90 10-5 C of charge on the plates of a 7.00-µF capacitor?
52. ### physics

plz tell me in which website can I get free engineering notes for first year B.E?
53. ### physics

Find the relation between phase difference and path dofferense
54. ### sonogram physics

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

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

find energy of a single photon of light when you have 5.4*10^12 hertz.
57. ### physics

Two charged spheres are 8.00 apart. They are moved, and the force on each of them is found to have been tripled
58. ### physics

a 3.5 kg bowling ball is 6.5 m above the ground. How much potential energy does it possess?
59. ### physics

610 C passes through a flashlight in 0.510 h. What is the average current?
60. ### physics

A bicycle starts from rest and reaches 6.0 m/s after 4 seconds. What is its acceleration?
61. ### Physics

By what distance must two charges of +2 C and +4 C be separated so that the repulsive force between them is 4.10 1010 N?
62. ### Physics

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

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

what is the northwest and eastward components of a 550 kph velocity?
65. ### Physics

What is the electric force of attraction between charges of 3 C and -4 C separated by a distance of 2 m?
66. ### physics

How would you do this? The K is 25.0 N/M The spring's max amount of elastic potential energy?
67. ### physics

How long does it take a 25 kW steam engine to do 5.6 × 10^7J of work? Answer in units of s
68. ### physics

If the speed of an object is doubled its kinetic energy is multiplied by
69. ### physics

If pressure is given by P=A+B by t and -c by D +v where t and v are time and velocity respectively then find dimensional formula of A, B,C&D.
70. ### 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
71. ### physics

does the flame of gas stove emit light?explain
72. ### physics

what 2 factors determine the size of the force of gravity? & what is the relationship between them?
73. ### physics

how many RPM are required to attain 1g with a radius of 840 feet
74. ### Physics

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

How many electron can passes through a cross sectional area of a conductor per second
76. ### Physics

Why does a pencil look broken if you hold it at an angle in a beaker of water?
77. ### Physics

What is the maximum amount of force a human can exert in newtons?
78. ### physics

How much work must be done to stop a 1070 kg car traveling at 111 km/h?
79. ### Physics

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

what is the amount of gravity im m/s on each planet in the solar system. I need to know by Wednesday. Thanks
81. ### Physics

Two persons A and B are walking with a speed of 4 km/h and 5 km/h respectively in the same direction. Find how far will B be from A after 3 hours ?
82. ### physics

How much work must be done to stop a 1200 kg car traveling at 135 km/h?
83. ### PHYSICS !!!!!!!!!!!!!!!!!!!!!!!!!!!!

a wave has a frequency of 2 Hz. find its period ? please show work.....
84. ### physics

need help can someone please tell me Electricity is often converted into other forms of energy. List 3 examples.
85. ### physics

What would be the resultant vector with an angle of 30° with the +x axis and has a y component of 1.2 Newtons?
86. ### physics

why one cannot find the north pole of the earth using only a simple compass
87. ### physics

Is there any investigations of forced oscillations of the spring-mass system?
88. ### physics

if the distance between two bodies is increased by 25% then % change in the gravitational force is
89. ### physics

Explain why helicopters need 2 rotors to fly in a straight line.
90. ### Physics

What are some common examples of light refraction, excluding rainbows?
91. ### Physics

how fast must a roller coaster be going to get around a vertical loop with a radius of 15 m
92. ### physics

what is the heat capacity of a gold ring that has a mass of 7.00g
93. ### Physics

find the x- and y- component of vector R which has a length of 13cm at 30.0 degrees
94. ### physics

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

Question contains pictures: h t t p : / / g o o . g l / M H k y 1 (delete the spaces between the characters for the URL)
96. ### physics

When a nucleus emits a beta particle, it's atomic number is ?
97. ### physics

How would you do this? The K is 25.0 N/M The spring's max amount of elastic potential energy?
98. ### Physics

How can you determine the polarization axis for a single sheet of Poloroid?
99. ### physics

how long does it take a 19kW steam engine to do 6.8x10^7 J of work?
100. ### PHYSICS 1A

how much current is drawn by a lamp that has a resistance of 1.2 O when a voltage of 6.8 V is impressed across it/