# Physics!

74,547 results, page 40

1. ### Physics

An object has a mass of 8.99KG and is moving at 2.55 m/s. How much kinetic energy does it have ?
2. ### science physics

When all forces acting on an object are combined together, what's the result known as
3. ### Physics

If a thunderstorm is heard 5 seconds later. How far away did the lightning strike?
4. ### physics

Two vectors and have magnitude = 3.08 and = 3.08. Their vector product is = -5.07 + 2.00 . What is the angle between and
5. ### Physics

Why would you get an e3lectric shock if you flew a kite close to the electricity wires?
6. ### Physics

Why would you get an e3lectric shock if you flew a kite close to the electricity wires?
7. ### math

In physics class, the girl to boy ratio is 3 to 4. If there are a total of 14 students, how many girls are there?
8. ### math

In physics class, the girl to boy ratio is 3 to 4. If there are a total of 14 students, how many girls are there?
9. ### physics

A young girl is on a swing that completes 20.0 cycles in 25 seconds. What are its frequency and period?
10. ### Physics

Would it have been possible to make DNA a binary code?
11. ### physics

How long, in seconds, is required for a car traveling at a speed of 32 km/hr to travel 110 m?
12. ### Physics

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

Find the velocity of a car of mass 1300kg and has kinetic energy of 3800 J.
14. ### physics

A 6.2kg piece of metal displaces 0.80 L of water when submerged.Find its density.
15. ### physics

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

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

State how the centripetal force is provided in the case of a satelite orbiting the earth
18. ### Physics

what is your power output if you climb a 2m ladder in 10 seconds? suppose your height is 565N.
19. ### physics

what are the methods of computing the veolicty of a particle in one- dimensona motion from a graph ?
20. ### Physics

Given 435 in^3 of nitrogen at 1340psi (absolute) at 72.0°F. Find the volume at 1150psi at 45.0°F.
21. ### Physics

what 2 properties of carbon make it a good material to use for motor brushes?
22. ### physics

Which of these is not an application of electromagnetic induction? A) Radio.B) None of these.C) Sound.D) Light.E) All of these are.
23. ### physics

To the nearest tenth of a Joule, what is its maximum kinetic energy of the pendulum in problem 2?
24. ### physics

If the slope in the above problem is 48 degrees, what is the coefficent of friction (to 2 decimal places)?
25. ### physics

Which of these is not an application of electromagnetic induction? A) Radio.B) None of these.C) Sound.D) Light.E) All of these are

find the speed of sound (in m/s) at -35°C at 1 atm pressure in dry air
27. ### 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?
28. ### 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?
29. ### physics

Explain how the specific heats of materials are measured using the technique of calorimetry.
30. ### Physics

If the cosmic microwave background radiation (CMBR) is at a temperature of 2.7K, what is its peak wavelength?
31. ### Physics

Calculate the magnitude of the force between two 3.95 µC point charges 7.4 cm apart
32. ### physics

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

a kangaroo goes 150 feet at 5ft/second how long does this take him.
34. ### physics

a horse walks 56 meters in 75 second. what is his average velocity?show the work
35. ### physics

what is the temperature increase of 6.4 kg of water when it is heated by a 7.7*10 square? (cp=4186j/kg*degrees celsius)
36. ### Physics

What is the electric field at a distance of 2 cm from 11 mC of negative charge? 2cm converts to 0.02 meters
37. ### Physics

can you use principle of density and buoyancy to explain how a cartesian diver works?
38. ### Physics Help!!

Comparing Einstein's and Newton's theories of gravitation, can the correspondence principle be applied? and Why or Why not? a)Yes b)No
39. ### physics

12.oo volt battery is connected in a series to 4 identical 5.00 ohm resistors what is the current
40. ### physics

a small pith ball carries a charge of -1.3 uc. how many excess electrons does this represent?
41. ### physics

How much time is required for sound to travel 1.4 km through air if the temperature is 30.0 c
42. ### Physics

How much work is done against gravity in lifting a 6.5-kg weight through a distance of 21 cm?
43. ### physics

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

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

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

A dancer completes 3.4 revolutions in a pirouette. What is her angular displacement? Help me get this answer please.
47. ### Physics

What is the typical wavelength of an X-ray ? I searched google and I couldn't find it. If you know the answer I'd appreciate it .
48. ### Physics help!!!

What potential difference is required in an electron microscope to give electrons a wavelength of 0.05 nm ?
49. ### Physics

A soccer ball is kicked with an initial speed of 27 m/s at an angle of 20° with respect to the horizontal.
50. ### Physics

A bicycle wheel of radius 0.2 m is spinning at a rate of 70 revolutions per minute.
51. ### Physics

What is the maximum theoretical efficiency of a steam engine operating between 60°C and 410°C?
52. ### 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.
53. ### physics

a train starts from rest ad at the end of 90° seconds has a speed of 10km/h. What is the acceleration?
54. ### physics

how long will it take for an apple falling from a 29.4m tall tree to hit the ground? how
55. ### Physics

You drop a rock off a bridge. 4. (2 pts) How fast is it going after 2.0 s?
56. ### Physics

How much energy (in cal) is required to raise the temperature of 15.0g of isopropyl alcohol from 10.0 C to 25.0 C?
57. ### physics

how presence of two eyes help in binocular vision in our daily tasks?
58. ### Physics

A 68-g ice cube at 0°C is placed in 796 g of water at 30°C. What is the final temperature of the mixture?
59. ### Physics

A man kicks a soccer ball that ravels 68 m in 4.3 seconds. What is the initial velocity?
60. ### physics

A bus slows down uniformly from 56.3 km/h (15.6 m/s) to 0 km/h in 24 s. How far does it travel before stopping?
61. ### physics

A bus slows down uniformly from 68.4 km/h to 0 km/h in 23.7 s. How far does it travel before stopping?
62. ### physics

how much negative work is done by friction on a 2000-kg car if you slow down from 20 m/s to 10 m/s?
63. ### physics

How long does it take the second hand of a clock to move through 4.00 rad?
64. ### physics

calculate the impulse to stop a 1500kg car moving 90kmper hours
65. ### Physics

A baseball goes from zero to 40 m/s in 0.159 s. What is its average acceleration? Answer in units of m/s 2
66. ### physics

A ball is dropped from the roof of a building. How fast is it moving after 4.6 seconds?
67. ### physics

if I drop a camera 40m high,how long before it hits the floor? G= 9.81
68. ### physics

two masses one on an inclined plane at 30 degrees the other suspended
69. ### physics

4) How many forces act on an upwardly tossed coin when it gets to the top of its path
70. ### physics

A car traveling at +7.2 m/s accelerates at the rate of 0.65 m/s 2 for an interval of 2.4 s. Find vf . Answer in units of m/s
71. ### Physics

Calculate the distance (in ) that Larry runs if he maintains an average speed of 8.9 for 1 hour.
72. ### physics

A bus slows down uniformly from 50.9 km/h (14.1 m/s) to 0 km/h in 27 s. How far does it travel before stopping?
73. ### Intergated chemistry/physics

What is the speed (in m/s) of an object that has a mass of 2.5 kilogram and a momentum of 1,000 kg m/s?
74. ### Physics

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

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

What is the wavelength of visible light of 6 x 1014 Hz frequency? 500 nm 400 nm 4000 nm 4 nm
77. ### Physics

What acceleration will you give to a 24.9 kg box if you push it horizontally with a net force of 82.8 N? __________ m/s2
78. ### physics

define the term torque or moment of force. Give its units and dimensions
79. ### physics

A car traveling at +6.3 m/s accelerates at the rate of 0.65 m/s^2 for an interval of 2.2 s. Find vf . Answer in units of m/s
80. ### Physics

what is a planes velocity if ithas anair speed of 18 and there is a 30 km/h wind blowing south
81. ### physics

1000 kg car moving at 10 m/s brakes to a stop in 5 s. The average braking force is ? n
82. ### Physics

Find the movement of a particle that moves along a straight due to the force F=-k*m*v(^2)
83. ### physics

What is the pressure inside a 33.1 L container holding 109.1 kg of argon gas at 399 K?
84. ### Physics

If 9.30 x 10^5 J of energy are transferred to 2.00kg of ice at 0 deg C, what is the final temperature of the system?
85. ### Physics

If 9.30 x 10^5 J of energy are transferred to 2.00kg of ice at 0 deg C, what is the final temperature of the system?
86. ### science physics 2

Sharlyn walks 5km/hr, how long will it take her to travel 15km?
87. ### physics

What is the speed of sound in a medium where a 100-kHz frequency produces a 5.96-cm wavelength?
88. ### physics

HOw much heait is needed to raise the temperature of 5 kg of water 5 degrees celsius
89. ### physics

A 5kg mass was lifted 365cm, how much work was done against gravity?
90. ### physics

What is the potential energy of a bear with the mass of 200 kg in 20 meter altitude of a mountain?
91. ### physics

A 0.255kg rock is thrown with a speed of 12.0m/s.How much energy does it initally passess?
92. ### physics

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

Can you find the pressure exerted on the floor by the heel if it has an are of 1.50 cm^2 and the woman's mass is 55kg?
94. ### physics

Jen pushed a box for a distance of 80m with 20 N of force. How much work did she do?
95. ### Physics

A 68.5kg man is standing still on an elevator that isn't moving, what is the normal force on him?
96. ### Physics

A 68.5kg man is standing still on an elevator that isn't moving, what is the normal force on him?
97. ### physics

what are the two things that determined the path of an object launched at an angle to the horizontal.
98. ### physics

c) A penny sits 12 cm from the center of a record turning at 33 1/3 rpm. What is the tangential speed in m/s?
99. ### Physics

For the problem (8.99 X 10^9 NM^2/c^2)(1 X 10^-6c) / (.1m)^2 = .90 N When I put this in my calculator I did not get .90N. Am I suppose to convert the units to get the answer. Thank you for your help.
100. ### physics

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