# Physics!

74,459 results, page 48

1. ### 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?
2. ### Physics

An ideal gas performs 453 of work and loses 45J of internal energy
3. ### Physics

The parabolic TV antenna receives electromagnetic waves from satellites. What is special about these rays?
4. ### physics

what is the net electrostatic force on the charge q3 -48ìc due to charges q1 (+78µC) and q2 (+50µC)
5. ### physics

How much charge passes through a cross-sectional area of a copper wire in 0.8 s if I = 3.5 A? 1 C
6. ### integrated chemistry and physics

If 2 blocks have the same mass which one has the greater acceleration?
7. ### Physics

find the altitude change of a 10,000 kg fighter which climbs and in doing so loses 100 m/s of airspeed
8. ### Physics

find the altitude change of a 10,000 kg fighter which climbs and in doing so loses 100 m/s of airspeed
9. ### PHYSICS

A BODY CHANGES IT'S VELOCITY FROM 20M/S UNTIL IT COMES TO REST IN 10 SECONDS.WHAT IS IT'S ACCELERATION
10. ### Physics

An object is thrown upward with a speed of 21.5 m/s. How high above the projection point is it after 2.06 s?
11. ### physics

What is the velocity of an object that falls from a cliff tot he ground which is 20,000 centimeters below?
12. ### physics

a 60kg sprinter accelerates from rest at 2.5m/s east for 4s. what force is acting and what is his final speed?
13. ### physics

a 333 hz and 337 hz tuning forks are struck simultaneously. whats will be the beat frequency?
14. ### physics

Calculate the speed of sound wave in air if its frequencies and wavelengths are 256Hz and 1.32m
15. ### physics

Consider the equation -mv0 +3mv0 = 4mvf. Where m and v0 are constants, Solve for vf. Simplify answer.
16. ### Physics

What will a spring scale read for the weight of a 75 kg woman in an elevator that moves upward with acceleration 0.30 g? w=?
17. ### physics

a car starts from rest and accelerates uniformly at 2m/s for 10second. what is its velocity at the end of 10 second?
18. ### Physics.

when an e- and a positron collide they're annihlated and their mass converts to engery. the energy released is? [1.64x10^-13 J]
19. ### Physics

Suppose the circular track in the figure below has a radius of 104 m and the runner has a speed of 3.3 m/s.
20. ### Physics

Suppose the circular track in the figure below has a radius of 104 m and the runner has a speed of 3.3 m/s.
21. ### physics

Doubling the frequency of a wave source doubles the speed of the waves. ( True or False)
22. ### physics

a 10,000hg car rounds a curve of radius 1200ft at 50mph what is its centripetal acceleration?
23. ### Physics

If you must stop your moving car in a hurry, should you slam on the brakes and lock them?
24. ### physics

If an engine produces a (mass flow rate) of 100kg/s of thrust, what is the force in Newtons?
25. ### Physics

How does the speed frequency distribution graph change for a given gas as the temperature is increased?
26. ### PHYSICS

2. How does the speed frequency distribution graph change for a given gas as the temperature is increased
27. ### physics

An 80 kg man on a 10 kg stretcher is being pulled upward with constant speed. What is the tension on the rope ?
28. ### physics 102

What are the wavelengths of electromagnetic wave in free space that have the following frequencies? (a) 3.00 10^19 Hz pm (b) 7.50 10^9 Hz cm
29. ### physics

i want a simple laboratory method of determining a young modulus of a long thine wire
30. ### Physics

A car travels in a straight line for 3.9 h at a constant speed of 83 km/h . What is its acceleration? Answer in units of m/s2
31. ### physics

Which has the greater acceleration, a car that increases its speed from 50 to 62 km/h, or a bike that goes from 0 to 12 km/h in the same time?
32. ### physics

At a certain instant a moving object comes to momentary rest. Is it accelerating at that moment?
33. ### physics

A bug completes one lap along the edge of a circular planter of radius 14.4 cm in 12.94 s.
34. ### Physics

A rollercoaster travels 135ft at an angle of 58.7 above the horizontal. How far does it move horizontally?
35. ### Physics

A car travels in a straight line for 4.8 h at a constant speed of 63 km/h . What is its acceleration? Answer in units of m/s 2
36. ### physics

A ball is dropped from the roof of a building. How much time does it take to reach a velocity of 15.4 m/s?
37. ### physics

what is the acceleration due to gravity at a distance of 2 earth radii abouve earths surface?
38. ### Physics

A ball was thrown straight up at 26.2 m/s then caught at the same place it was released. How many seconds was it in the air?
39. ### physics

A ball was thrown straight up at 20.7 m/s then caught at the same place it was released. How many seconds was it in the air?
40. ### physics

If motion of a particle of mass (m) is given by y=ut+1/2gt^2 (square).find force acting on it
41. ### physics

A 6.0 Kg object undergoes an acceleration of 2.o m/s squared. what is the magnitude of the net external force acting on it?
42. ### Physics

What is the speed of a hockey puck of mass 0.15 kg if it experiences a force 60 in N for the extent of a slap shot of 0.25 m?
43. ### physics

If a ferris wheel has the radius of 5 meters, and one revolution takes 32 seconds, what is its speed?

45. ### physics

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

what device could use th earth's magnetic felds to produce energy and how it would work?
47. ### PHYSICS ASAP!

A Football is kicked 66.6 meters in 5.39 seconds. What was the initial velocity? Magnitude and Direction
48. ### Physics

Janetjumpsoffahighdivingplatformwith ahorizontalvelocityof2.96m/sandlandsin thewater2.8slater. Howhighistheplatform ?Theacceleration ofgravityis9.8m/s2.
49. ### Physics

you throw a ball upwards in the air at a velocity of 80m/s how fast will it be moving at 3 sec?
50. ### Physics

Contrast the metric units of distance, time, and speed. Describe the relationship between them.
51. ### Physics

2. Contrast the metric units of distance, time, and speed. Describe the relationship between them.
52. ### physics

2. Contrast the metric units of distance, time, and speed. Describe the relationship between them.
53. ### Physics

2. Contrast the metric units of distance, time, and speed. Describe the relationship between them.
54. ### Physics

2. Contrast the metric units of distance, time, and speed. Describe the relationship between them.
55. ### Physics

2. Contrast the metric units of distance, time, and speed. Describe the relationship between them.
56. ### physics

If a race car completes a 4mi oval track in 73.2s, what is the average speed in units of mi/h?
57. ### physics

If a race car completes a 4mi oval track in 73.2s, what is the average speed in units of mi/h?
58. ### physics

If a race car completes a 4mi oval track in 73.2s, what is the average speed in units of mi/h?
59. ### science-physics

What is the formula to calculate the speed of the electron the has a mass of 0.910000000000000000000000000000 kg and a radius of 0.5290000000000 m?
60. ### physics

determine the energy of a photon radio wave electromagnetic radiation. i know which formula to use 6.64*10^-34 what

A microwave oven operates at 2.80GHz . What is the wavelength of the radiation produced by this appliance?
62. ### Physics

When dealing with circular motion; a string with the length of .4m is being spun horizontally, is the radius .2m?
63. ### physics

A car travels in a straight line for 4.8 h at a constant speed of 57 km/h . What is its acceleration? Answer in units of m/s
64. ### Physics

A cable lifts a 1060-kg elevator at a constant velocity for a distance of 39 m. What is the work done by each of the following?
65. ### Physics

A cable lifts a 1060-kg elevator at a constant velocity for a distance of 39 m. What is the work done by each of the following?
66. ### physics

Wind gusts create ripples on the ocean that have a wavelength of 5.00 cm and propagate at 2.00 m/s. What is their frequency?
67. ### physics

How high will an object rise if it is projected upward at a 45 degree angle and an initial velocity of 50 m/s?
68. ### physics

How high will an object rise if it is projected upward at a 45 degree angle and an initial velocity of 50 m/s?
69. ### physics

what is the reasonable temperature (Th anh Tc) for an ideal (caront) refrigerator that have coefficient of performance of 13
70. ### physics

a 747 airliner reaches its takeoff speed of 170 in 35.0 .what is the magnitude of its average acceleration
71. ### physics

If a solid is stretched or compressed beyond the point that it can return to its original shape it has passed its
72. ### physics

Calculate the speed of an 7.6×104 kg airliner with a kinetic energy of 1.2 × 109 J. Answer in units of m/s
73. ### physics

what is the force per meter on a wire carrying 7.5A current when perpendicular to a 0.70T field?
74. ### physics

Rank, from smallest to largest, the pressures in the tank of motionless fluid shown in the figure.
75. ### physics

What is the wavelength associated with a golf ball of mass 45 g driven off the tee with a velocity of 30 ms-1.
76. ### Physics

A 155 N force is applied to the end of a 40 cm wrench at a angle of 45 degrees to the handle. What is the torque?
77. ### physics

Your friend says his remote control car travels at a velocity of 1.5 m/s. What is wrong with that statement
78. ### physics question

find the force exerted by proton and the electron in a hydrogen atom they are 5.0 X 10^-19 coulomb
79. ### physics

A 1.00 x 10^3 kg sports car accelerates from rest to 25.0 m/s in 7.50 s. What is the average power output of the automobile engine?
80. ### physics

What must be the magnitude of the force of static friction between the surface and the bottom of the crate?
81. ### physics

a ball is thrown vertically upward at a speed of 45 m/s. how long does it take to return to the ground?
82. ### Physics

You have a circular table. You measured its radius to be 10 cm with an uncertainty dr =+/- 3mm. The area would be A +/- a cm^2. a. What is A? b. What is a?
83. ### Physics

You have a circular table. You measured its radius to be 10 cm with an uncertainty dr =+/- 3mm. The area would be A +/- a cm^2. a. What is A? b. What is a?
84. ### PHYSICS

how far will a 1000kg car travel in 10 sec if it is accelerated from rest by a force of 5000N
85. ### physics

Determine the net force needed to cause a 1310kg sports car to accelerate from 0 - 28.6m/s[fwd] in 5.6 s
86. ### physics

A plane cruising at 251 m/s accelerates at25 m/s2 for 9 s.What is its final velocity?Answer in units of m/s
87. ### Basic Physics

If a swimming pool has dimensions; 28.2 5m x 10.0m x 2.30m, when it is full of water, what is the force on the bottom ?
88. ### physics

A spring has a force constant of 70000 N/m. How far must it be stretched for its potential energy to be 21 J?
89. ### physics

what will happen to the bone structure if earth becomes more dense than its actual density?
90. ### physics 11

By how much would 1200 W kettle, which is 72% efficient raise the temperature of 0.60 kg of water in 3.0 min?
91. ### physics

what has no beginning and no end. it is also considered as the medium for light in einstein's theory of relativity
92. ### physics

An argon atom has a mass of 6.64 x 10 kg has 5.5x108 joules of kinetic energy. At What velocity is it moving?
93. ### physics

calculate the friction force of an object? if weight=19600,vi=30ms-1,vf=0ms-1 and S=100m.
94. ### physics

if a car moving 180km/h reduces to 72km, what is the percentage change in kinetic energy?
95. ### Basic Physics

What is the force of gravity between two spheres that have a mass of 8 kg and are separated by 27 m?
96. ### physics

find the force if f between charges of +100mc -50mc located 50cm a part?
97. ### physics

find the force if f between charges of 100mc -50mc located 50cm a part?
98. ### physics

what is the kinetic energy of a 3 kg 20 cm diameter bowling ball with a linear velocity of 4m/s? (rolling and spinning)
99. ### physics

the magnitude of the tongue produced by a 3.0n force applied to a door at a perpendicular distance of 0.25 m from the hinge
100. ### Physics

How many joules would be required to raise the temperature of 20g of ice at oC to water at15C?