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

79,978 results, page 88

1. ### Physics

How much heat is needed to melt 14.3kg of silver that is initially at 44°C?
2. ### Quick Question #2

How did Max Planck came upon/discover Quantum Physics? thank you

4. ### Physics

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

Find the magnitude of the dot product of the two vectors B=6i+j+2k, D=-1+3j. What is the angle between B and D
6. ### physics

compute the mass of the following assuming if it to be a sphere of radius 6370km
7. ### Physics

A man walks 3km E and then 4km N. What is his resultant displacement?
8. ### Physics 30

Vectors A) 3.5 cm North B) 4.2 cm West Algebraically subtract B from A(B-A) Whaaaa? Please help
9. ### PHYSICS

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

what is diffraction? When does it occur? Which waves will defract more when passing through an opening?
11. ### PHYSICS

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

what will be the distance time graph for a train standing at a station?
13. ### physics

When measuring kinetic friction, why is it necessary to move at a constant velocity?
14. ### physics

Does the kinetic energy of a car change more when it speeds up from 10 to 15 m/s or from 15 to 20 m/s? Explain.
15. ### physics

what is the wavelength of neutron (m=1.67x10^-27kg) travelling at 3.0x10^4 m/s?
16. ### PHYSICS

determine the speed of a 2.0g insect that has kinetic energy of 0.020 J.
17. ### Physics

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

a freight train has two engines, each with a mass of 50,000 kg. pulling
19. ### physics

Distance covered per unit of time is called _________.
20. ### physics

a guy walks one lap at 35 miles per hour, what is his velocity?
21. ### physics

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

Do the mass of a body determine the gravity they possess(sun)
23. ### Physics

An airplane travels at 880 how long does it take to travel 1.50km
24. ### physics

a 20.0L sample of hydrogen gas has a mass of 1.80g. What will its density be in g/ml?
25. ### Physics

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

Show that the acceleration of a hamster is 5 m/s2 when it increases its velocity from rest to 10 m/s in 2 s.
27. ### physics

all electric charges are multiples of the charge on an electron, or atom?
28. ### physics

determine the velocity of a charge that push by the 16 volts source
29. ### physics

i need to make a working model on the applications of electric generator
30. ### physics

How far will 350 joules raise a block weighing 7 newtons?
31. ### Physics

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

In our country and in most of other countries ,the Celsius scale is more commonly used . Can you think of a reason for this?
33. ### Physics

You drive a car 2 h at 48 km/h then 2 h at 62 km/h. What is your average velocity? Answer in units of km/h
34. ### Physics HW Plz help

What is the frequency of a blue light with a wavelength of 487nm?
35. ### Physics

the force required to accelerate a mass of 10.0kg at 4.00m/s^2 is
36. ### physics

Which is the vector quantity that describes the shortest path between two points?
37. ### physics

Explain the difference between a GET and MOSFET on the basis of their construction and working
38. ### Physics

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

What is the KE (in J) of a 2650 lb Honda Civic traveling at 100 mph?
40. ### physics

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

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

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

what is the resistance of air gap in plug key in a circuit.
44. ### Physics

If your car accelerates from rest at a steady rate of 4 m/s2, how soon will it reach 84 km/h
45. ### physics

a force of 20 n acts on a 5 kg block. calculate the acceleration of the object.
46. ### physics

A car has a uniform velocity of 108km/h. How far does it travel in 1/2 min
47. ### physics

Calculate the angular velocity of the minute hand of a clock.
48. ### Physics

What is the average useful power output of a person who does 5.90×106 J of useful work in 7.90 h?
49. ### physics

exercise 4.1 suppose the pilot start agin from rest
50. ### physics

what is the refrevtion of waves? And what are the laws'of refraction? Also about phase change.
51. ### physics

Which is the vector quantity that describes the shortest path between two points?
52. ### physics

A projectile is launched straight upwards at 45 m/s. Three seconds later, its velocity is A. 75 m/s B. 30 m/s C. 15 m/s D. zero
53. ### AP Physics B

What's the equation to find the maximum height after a spring decompresses?
54. ### physics

find a unit vector parallel to the resultant of vectors : A=2i^+j^-k^& B=3i^-2j^+2k^
55. ### physics

What emf is required to cause 12 amperes to flow through a resistance of 7.2 ohms?
56. ### physics

What is the value of the gravitational acceleration at a height of 2000 km above the surface of the Earth?
57. ### Physics

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

how long does it take a 19kW steam engine to do 6.8x10^7 J of work?
59. ### 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
60. ### Physics

A boy walk 1km due north.what is his displacement?
61. ### physics

Explain the term uniform acceleration and average speed
62. ### Physics

When an object is immersed in a fluid describe the buoyant force?
63. ### 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 ?
64. ### Physics

how much energy is required to change 40 g of ice at -10 C to steam at 110 C?
65. ### Physics

What is the power output of an engine the does 60,000J of work in 10s?
66. ### physics

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

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

a 4kg bird is flying with a velocity of 4m/s2. what is the kinetic energy?
69. ### Physics

the energy of a ball rolling up an inclined place plane is?
70. ### Physics

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

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

how long in seconds does it take for a car to accelerate from 0 to 100 km/h2 if acceleration is 10 m/s2?
73. ### physics

Essay on how accleration due to gravity is used to benefit mankind
74. ### Physics

If radius = 1.25 when i am swinging a bucket around and around what is the slowest possible speed i can go without it spilling?
75. ### Physics

What is the efficiency of an athlete who consumes 3000kcal of food and does 2.5 x 10*6 J of useful work?
76. ### physics

44 foot skid from a jeep cherokee, how fast was it traveling.
77. ### physics

A car accelerates from rest at -2.10 m/s2. a. What is the velocity at the end of 4.0 s? b. What is the displacement after 4.0 s?
78. ### physics

what are the draw backs of hugyen's wave theory of light?
79. ### physics

An isotope of iodine is I-126.how many protons, neutrons &electrons does it have
80. ### physics

What are the 3 primary subatomic particular? What is the charge on each? where in the atom is each particle located?
81. ### Physics

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

Find out the resultant of two forces of 4N and 7N acting at an angle of 140°
83. ### physics

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

I need to find some information about the 'wave packet' thoery about light. Can you please tell me how I should do this.
85. ### physics

calculate the electrostatic force between charges of -2.4 µC and +5.3 µC, placed 58cm apart in a vaccum.
86. ### physics

what is the distance and displacement of the race car drivers in the 15m?
87. ### physics

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

what happens when a resistor is used to heat a brass rod and allowed to cool?
89. ### physics

How much work must be done to bring three electrons from a great distance apart to 5.5×10−10 m
90. ### physics

how can a racing bicycle have the same linear momentum as a pick-up truck?
91. ### Physics

A truck starts from rest and accelerates at 2.0 m/s² for 4.0 s. How far will it have gone at the end of this time?
92. ### physics

a cannonball is fired straight up at 60m/s. how long does the flight last?
93. ### physics

two forces 5N and 7N act on an object respectively.When will the resultant of the two vectors be at a maximum?
94. ### Physics 102

What would be the path of the Moon if somehow all gravitational forces on it vanished to zero?
95. ### 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,
96. ### 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...
97. ### Physics

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

What are some careers that relate to waves and sound? Can you give some examples of how it's used please?
99. ### Physics

How much force is required to accelerate 7.0 g object at 11000 "g's" in a centrifuge?
100. ### physics

two forces of 5 N respectively act on an object.when will the resultant of the two vectors be at a maximum?