# Physics!

74,730 results, page 42
1. ## physics

a spacecraft has an acceleration of magnitudes 5.0g what distance is needed for it to attach a velocity of 10 km/s?
2. ## Physics

if the mass of two balls is 0.300 kg each then what is the gravitational force between them if the distance is 0.3000 m
3. ## physics

What is the wavelength of an X-ray photon with energy 6.0 (6000 )? (Hint: 1 = 1.60 10-19 joule.)?
4. ## physics

what is the wavelength of an X- ray photon with energy 10 keV?(10,000eV)? what is the frequency?
5. ## Physics

Determine the x-intercepts of the polynomial function y=-6(x+7)^4 + 5. Round to two decimal places, if necessary.
6. ## Physics

How far does a point on the circumference travel if the wheel is rotated through an angle of 28.6 rads?
7. ## physics

Is the charge on the surface of the earth due to an excess or a deficit of electrons?
8. ## Physics

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

Calculate the gravitational force between two identical 100-kg masses separated by 1 m.
10. ## physics

If a cat chases a mouse for 1.15 s whail covering a distance of 19.6 m, what is the velocity?
11. ## Physics

Two objects are moving in different direction. Under what circumstances can you treat this as one-dimensional problem?
12. ## physics

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

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

How fast would you need to be travelling relative to an observer in order for them to see a 15% increase in your mass?
15. ## science physics 2

Sharlyn walks 5km/hr, how long will it take her to travel 15km?
16. ## Humanities Core

In what ways can we say that quantum physics both is and is not classical science? it has something to do with galileo but im not sure....
17. ## physics

what frequency of sound travels in air @20 degree C has a wavelength equal to 1.7m?
18. ## Physics

Explain how you would determine how much error there is between a vector addition and the real results.
19. ## physics

find the acceleration produced by a net force of 300.0 N on a mass of 0.75 kg.
20. ## physics hw urgent please

show how you would you arrange to find f in terms of v,m and r from four equations below. f=1/t, f=ma,v=2piR/T,a=v^2/R Thanks
21. ## physics

How much heat does 25g aluminum give off as it cools from 95celsius to 30celsius?
22. ## physics

application of and the concept of heat and temperature in technology.please can u give me the link.thanks
23. ## Science: Physics

A circle graph has labeled segments of 5.7%, 21%, 13, and 6%. What % does the unlabeled segment have?
24. ## Note for Ms. Sue

Check out the Physics posting on the top of the list. Can it be deleted?
25. ## 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.
26. ## physics

If a wheel 211 cm in diameter takes 2.25 s for each revolution, find its period. T=?s
27. ## physics

if a current of 4900A is applied to a copper wire what might happen to it? does it burn or what?
28. ## Physics

Is it true that a drop of water can pass through a solid travelling by 1800m/s2?
29. ## physics

A rotating cylinder about 16 long and 6.2 in diameter what angular speed must it rotate?
30. ## Physics

An truck with a mass of 3500 kg travels with a velocity of 22.0 m/s. Find the momentum.
31. ## college physics

What is the speed of light moving through a medium of index of refraction 2.45?
32. ## PHYSICS

WHAT IS THE VELOCITY OF A CAR THAT TRAVELS AROUND A TRACK THAT HAS A RADIUS OF 15M IN 2 MINUTES
33. ## Physics

Two forces of 5N and 7N respectively act on an object,what are the maximum and minimum resultants of the two vectors
34. ## Physics

if the frequency of a particular electromagnetic wave is 4 x 10^14 hertz, what is its wavelength of the radiation in nanometers (nm)?
35. ## physics

a 1200 kg car goes from 15m/s in 16s. What is the average force acting on it?
36. ## physics

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

Just wanted to say a quick thanks to Steve and Damon, figured it all out, thanks guys, awsome!!!
38. ## Physics

I am not getting the difference between distance and displacement.... without using the words scalar and vector quantity, of course, i know what they mean but still i need help with this... so please help!!!
39. ## physics

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

Find the diameter of a gold coin that has a weight of 1.00 (troy) oz and a thickness of 3.00 mm.
41. ## physics

whats the acceleration of a car traveling 402 meters in 6 seconds
42. ## physics

A proton is confined to a nucleus of radius 5 FM.what's the minimum uncertainty in momentum?
43. ## physics

how much work is required to give an object 600 J of potential energy?
44. ## Physics

An arrow is shot from a bow at 42 m/s at 70 degrees what is the horizontal and vertical components
45. ## physics

You are driving a car with a power output of 56,000 Watts. How many seconds will it take to go from 0 m/s to 27 m/s?
46. ## physics

how much work is required to give n object 450J of kinetic energy?
47. ## Physics

suppose you have 3 resistors, each of value 0f 30 omega. List all the different resistances that you can obtain by combining them
48. ## physics

what is the displacement of the ball? i.imgur. com/8ljWh . png i don't know calculus!
49. ## physics

why when steady state conditions apply the rate of heat flow is the same?
50. ## physics

A hunk of cast concrete with a weight of 10 N will float if it displaces 10 N of water.
51. ## Physics

Is it true or wrong to say that components in series must have the same potential difference across them? Either yes or no explain it.
52. ## physics

if you jump upward with a speed of 2mls, how long will it take before you stop rising?

A 12.1 g CD with a radius of 6.16 cm rotates with an angular speed of 31.1 rad/s. What is its kinetic energy?
54. ## physics

A 87-g ice cube at 0°C is placed in 886 g of water at 28°C. What is the final temperature of the mixture?
55. ## Physics Help!!!

With the energy needed to warm up some amount of water from 26°C to 44°C, how high could you lift it?
56. ## physics

You have exactly 1 L of ethyl alcohol at room temperature 23 C. You put it in a refrigerator at 4 C.What's its new volume?
57. ## physics

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

In the olden days Christmas lights were wired in series. Why was this not very festive?
59. ## Physics

What is the color of all the visible light frequencies mixed together equally? I would think white. Is that right?
60. ## Physics

Describe how you can determine the specific heat of an unknown metal whose mass is known.
61. ## Physics

An object moves with acceleration given by a = -6t^3 m/s^2. Its initial velocity at t = 0 is 5 m/s. How far will it move before stopping?
62. ## math

who are the fathers of following subjects a)maths b)physics c)chemistry d)biology e)social
63. ## Physics

Determine the escape velocity at a location 2.5*10^4km from the surface of Jupiter
64. ## physics

How much work is required to stop an electron (m = 9.11 10-31 kg) which is moving with a speed of 2 106 m/s?
65. ## physics

1. How far apart must two protons be if the electrical force of repulsion acting on either one is equal to its weight?
66. ## Physics

How can you demonstrate that water is denser than ice without weighing them? What is the principle involved?
67. ## Physics

A 125 ball has a kinetic energy 33.6 What is the magnitude of it's momentum? What is the speed?
68. ## Physics

1.A Speed Of A Bullet Of Mass 20g Is 200km/h. What Is The Kinectic Energy.
69. ## Physics

If a car accelerates from rest to 15 m/s for a distance of 200 m. What is the magnitude of acceleration?
70. ## Physics

How do the mainsail and the jib of a sailboat help the boat sail? What do these two sails have to do with force?
71. ## physics

What is the distance from the earth's center to a point where your weight would be 1/25 of what you weigh at the surface?
72. ## Physics

How much force is needed to make a 1,400 kg car moving at 35 m/s come to a stop in 5.2s?
73. ## Physics

How much force is needed to make a 1,400 kg car moving at 35 m/s come to a stop in 5.2s?
74. ## Physics

How long does it take a 19 kW steam engine to do 6.8x10^7 of work? I have no idea how to solve this... Would someone please help?
75. ## Physics

What is the orbital speed of a satellite of mass 490 kg in geostationary orbit?
76. ## physics

if a 700-kg piano us lifted 4.0 meters in 14 seconds, how much power is developed
77. ## Physics HW Plz help

Why can't most objects like an apple travel at speeds above the speed of light?

find the speed of sound (in m/s) at -35°C at 1 atm pressure in dry air
79. ## Physics

How much time is needed for 5.0 N force to increase the speed of a 0.248 kg object from 12 m/s to 56 m/s?
80. ## physics

if a 700-kg piano us lifted 4.0 meters in 14 seconds, how much power is developed
81. ## physics

lenses that always diverge light rays that strike them is that convex or concave? I am not sure.
82. ## Physics

What is the acceleration of a proton moving with a speed of 4.3 m/s at right angles to a magnetic field of 2.1 T?
83. ## Physics

Roads seldom go straight up a mountain, they wind back and forth. Explain why this is useful
84. ## physics

What total capacitances can you make by connecting a 4.98 µF and 8.98 µF capacitor together? series ? parallel?
85. ## physics

Two point charges, each 6*10-5 C, are separated by 30 cm. What is the electrostatic force produced by this arrangement?
86. ## physics

What is the length of a box in which the difference between an electron's first and second allowed energies is 1.30×10−19 ?
87. ## Physics

The sun has a raduis of 6.96*10^8m and a surface temperature of 5780K. How much power is radiating?
88. ## physics

By how much does the speed of a vehicle moving in a straight line change each second when it is accelerating at 4 m/s2?
89. ## Physics

An object moves with acceleration given by a = -6t^3 m/s^2. Its initial velocity at t = 0 is 5 m/s. How far will it move before stopping?
90. ## AP physics

An object undergoes a displacement x while a force F acts on it. If F does zero work, then the angle between F and x must be
91. ## Physics

How much work does a person do to lift 60000 a distance of 7.8 ft in 10s? How much power? Hp?
92. ## Physics

does a baseball thrown at 100 miles per hour have a lot of force?
93. ## physics

what is the gravitational force on a 60k person on the earth, due to the moon?

A 12.1 g CD with a radius of 6.16 cm rotates with an angular speed of 31.1 rad/s. What is its kinetic energy?
95. ## PHYSICS

A car traveling at 17 m/s accelerates at 1.37 m/s2 for 12 seconds. To the nearest meter how far does it travel?
96. ## physics

if a body moves 3m north,then 4m East and finally 6m South.what will be the displacement?
97. ## physics

The third longest wavelength in the Paschen series in hydrogen corresponds to what transitions?
98. ## Physics

True or false: If two planets have the same mass but the second one has twice the gravity, it must have four times the radius
99. ## physics

A bus traveling at 30.0km/h accelerates at a constant 3.5 m/s^2 for 6.8s. what is its final velocity?
100. ## Physics

Which of the following is the correct relationship between the electric field strength and the potential difference?