# Physics!

74,459 results, page 57

1. ### physics

show that none of the principal moments of inertia can exceed the sum of the other two Please help me thank you
2. ### physics

A 1.56kg seagull dives through the air and gains 4495 of energy.What is the birds speed?
3. ### Physics

a child twirls a yo-yo about in a horizontal circle. The yo-yo has a mass of 0.20 kg and is attached to a string 0.8 m long. what is the velocity of the yo-yo? thanks!
4. ### physics

How much work is needed to lift a 400kg engine upward 1.5 meters out of a car?
5. ### physics

How much work is needed to lift a 400kg engine upward 1.5 meters out of a car?
6. ### physics

How much work is needed to lift a 400kg engine upward 1.5 meters out of a car?
7. ### physics

An Otto engine has a maximum efficiency of 33.1 %; find the compression ratio. Assume that the gas is diatomic.
8. ### Physics

What is the frictional force between the tires of a 2000 kg car and an asphalt road if the coefficient of friction is 1.2?
9. ### Physics

What is the frictional force between the tires of a 2000 kg car and an asphalt road if the coefficient of friction is 1.2?
10. ### PHYSICS

Find the electrical force that exist between two particles having 6.0 mC and 18 nC when they are 0.5cm apart
11. ### physics

How much potential energy does DeAnna with a mass 57.0 kg, gain when he climbs a gymnasium rope a distance of 3.7 m?
12. ### Physics

An object was fired with an initial speed of 33m/s at an angle of 32 degrees from the horizontal. How long was it in the air?
13. ### Physics

The crate, m=68kg, is pushed up an incline, θ=24degrees, at a constant velocity with Fp=500N. μk=?
14. ### math in physics

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

How can I find the physics behind why a wheel moves faster or slower than other wheels? Is this friction?
16. ### Gr 9 Science - physics

If all 3 resistors in a series 12V circuit are the same, what will the voltage be across resistor no. 3?
17. ### physics

A helicopter blade spins at 110 revolutions per minute. Its tip is 5.50 m from the center of rotation.
18. ### Physics

How far above the surface of the earth would you have to be before your weight is reduced by 12.89%? Please Help !
19. ### Physics

If a bullet was fired straight up at a speed of 30 m/s, what would be the total time for it to return to its starting point?
20. ### Physics

If a bullet was fired straight up at a speed of 30 m/s, what would be the total time for it to return to its starting point?
21. ### Physics

If a bullet was fired straight up at a speed of 30 m/s, what would be the total time for it to return to its starting point?
22. ### Physics

If a bullet was fired straight up at a speed of 30 m/s what would be the total time for it to return to its starting point?
23. ### Physics

Your friend of mass 150 can just barely float in fresh water. Find her volume.
24. ### Physics

To rearrange the furniture in your room, you need to exert a force of 20 N to push your desk 10 m. How much work do you do?
25. ### physics 112

what is meant by a change in temp of 1 degree celcius on the scale of a platinum resistance thermometer
26. ### Physics

While sitting in class your body exerts a force of 600 N on your chair. how much work did you do?
27. ### Physics

A meteoroid is speeding through the atmosphere, traveling east at 19.0 km/s while descending at a rate of 12.9 km/s. What is its speed, in km/s?
28. ### Physics

How much energy is released when 1 gram of steam condenses to water at 100 degrees Celsius?
29. ### physics

in order to catch a fast moving softball with your bare hand doing this reduce the catching forcebecause the what
30. ### Physics

Two resistors 3 Ù and 6 Ù are connected in parallel across a 6 V battery. What is the current flow through the 3 Ù resistor?
31. ### Physics

A shopper stands 0.6 m in front of a diverging mirror of focal length 0.2 m. Where is the image located and what is the magnification?
32. ### Physics 202

Find the period of a satellite with a circular orbit 350 above Earth's surface.

How much time does it take a pulse of light to travel through 120 m of water?
34. ### physics

At what distance is the electrostatic force between two protons equal to the weight of one proton?
35. ### Physics

A car travells 20 km due north and then on a bearing of 90 degrees for 12km. Use a scale drawing.
36. ### physics

For a simple 15 upward ramp, what length would be needed for a runaway truck traveling 140 ?
37. ### Physics

You're sailboarding at 7.0 m/s when a wind gust hits, lasting 6.8 s accelerating your board at 0.47 m/s2 at a 35 degrees to your original direction.
38. ### Physics

If a light bulb draws 60 watts and I leave it on for 5 hours, how much energy has been consumed?
39. ### Physics

A 100kg steel beam falls from rest from a height of 20m, Find its impact speed.
40. ### Physics

Plane flying southwest at 155mi/hr. their is a wind from the west at 45.0mi/hr. what's the planes new velocity
41. ### Physics

Let U=(13i3−i). What is U†? Explicitly indicate multiplication with a * symbol. For instance, you should write 3*i+2 instead of 3i+2.
42. ### Physics

Calculate the speed in m/s at which Earth revolves about the Sun. You may assume the orbit is nearly circular.
43. ### physics

What is the orbital radius and speed of a synchronous satellite which orbits the earth once every 24h?
44. ### Physics

A mass of 100 gram is fallen down,which will be the kinetic energy after 5 second of its fall?
45. ### Physics

500 calories of heat is added to 2.0 g of water at 80 degrees Celsius. How much steam is produced?
46. ### Physics

Let U=(13i3−i). What is U†? Explicitly indicate multiplication with a * symbol. For instance, you should write 3*i+2 instead of 3i+2.
47. ### physics

At what height above Earth's surface is the gravitational acceleration reduced from its sea-level value by 0.60%?
48. ### physics

If you do 110 J of work to elevate a bucket of water, how much energy did you add to the gravitational field?
49. ### physics

If your boat weighs 1400 N, how much water will it displace when it’s floating motionless at the surface of a lake?
50. ### Physics

6. If your boat weighs 1200 N, how much water will it displace when it’s floating motionless at the surface of the lake?
51. ### college physics

a bus that is traveling at 30.0km/h speeds up at a constant rate of 3.5m/s2. what velocity does it reach 6.8s later?
52. ### Physics

An iron railroad track 1000 feet long is at a temperature of 0 oC. How much does it expand when heated to 33 oC?
53. ### physics

the sounds of a cricket gets stronger as you get closer to it. if you get twice as close, how much louder will the sound be?
54. ### physics

how long 1.2kw electric kettle take to heat 0.8kg of water from 20c to 100c?
55. ### physics

waves in a lake are observed to be 5 cm in length and to pass an anchored boat .8 s apart. the speed of the wave is
56. ### physics

What is the maximum acceleration a car can undergo if the coefficient of static friction between the tires and the ground is .90
57. ### physics

For non-conservative forces, the work done does depend upon the path taken. True or False?
58. ### Physics

A 3 cm flower is placed 40 cm from a converging lens with a focal length of 15 cm. What are the orientation, size and type of the image?
59. ### physics

an airplane taking off from a landing field has a run of 500m. Calculate the average acceleration in ft/s2.
60. ### Physics

A body with a mass of 75 kg is located at a height of 20 m. If it is allowed to free fall to the ground. What will be its velocity on impact?
61. ### physics

A20 kg box is suspended from the ceiling by robe that weight of the rope is 1kg find the tension
62. ### physics

if the direction of a magnetic field around a straight wire is counterlcockwise, which direciton is the current traveling?
63. ### Physics

determine the image distance for an object that is 45.0 cm from a double convex lens having a focal length of 15.0 cm
64. ### Physics

Newtons second law What net force acting on a 14kg wagon produces an acceleration of 1.5 m/s^2?
65. ### Physics

If the same shoe were dropped from a height of 40m, how many seconds would it take it to hit the floor?
66. ### physics

a body is moving with uniform acceleration of 10m/s2.if it starts from rest calculate its displacement after 5s
67. ### physics

a body is moving with uniform acceleration of 10m/s2.if it starts from rest calculate its displacement after 5s
68. ### physics

if the shortest lenght of the tube for resonance is 0.1m and next resonanc length is 0.35m what is the frequency of the vibration.
69. ### physics

If the same shoe were dropped from a height of 40m, how many seconds would it take it to hit the floor?
70. ### Physics

7) An apple falls from a tree (h = 9m). In the absence of air resistance, how fast is it traveling when it strikes the ground?
71. ### Physics

Can someone explain why electrons cannot exist in orbitals and why we need to describe their location in terms of probabilities.
72. ### Conceptual Physics

How do you calculate the time traveled while traveling 25 knots? It needs to be converted into km/hr.
73. ### Physics

Calculate the total energy of 4.0 kg object moving horizontally at 20 m/s 50 meters above the surface. Please help me!!!!!
74. ### physics

Every few hundred years most of the planets line up on the same side of the Sun
75. ### physics

how much power require to pull the water from horizontal distance about 100 feet ?
76. ### Physics - Magnetism

The direction of magnetic lines of force change if an iron piece is placed in its field. Why?
77. ### physics-magnetism

The direction of magnetic lines of force change if an iron piece is placed in its field. Why?
78. ### physics

if a skydiver with a surface area of 2m sq falls at a steady speed of 55m/s with a force of 900N what is the pressure on her?
79. ### Physics

Calculate the current in the 240-Ώ filament of a bulb connected to a 120-V line. Power = IV
80. ### physics

What is the repulsive force between two pith balls that are 12.0 cm apart and have equal charges of -39.0 nC?
81. ### jru-physics

what potential energy is acquired by a block of steel whose mass is 50 kg when it is raised 200 cm?
82. ### physics

A car travels in a straight line for 4h at a constant spped 73km/h. What is its acceleration? Answer in units m/s^2
83. ### physics

A rock is dropped from a 196-m-high cliff. How long does it take to fall (a) the first 98.0 m and (b) the second 98.0 m?
84. ### physics

A rock is dropped from a 196-m-high cliff. How long does it take to fall (a) the first 98.0 m and (b) the second 98.0 m?
85. ### physics

A copper wire has a diameter of 1.532 mm. What magnitude current flows when the drift velocity is 0.500 mm/s?
86. ### Physics

What net external force is required to give a 30 kg suitcase an acceleration of 2.5 m/s2 to the right? Answer in units of N
87. ### physics

the earth is approximately sphere of radius 6.37*10^6 meter.what is its surface area in square km? what is its volume in cubic km?
88. ### Physics 102

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

The time at which it took the arrow to reach the bulls eye is .6 seconds and it will land 1.8m under the bullseye
90. ### physics

a projectile launched speed of 31.1m/s at angle 71.2 degrees above horizontal fill in table time 0 vx m/s 10.0m/s vy 29.4m/s ax? ay?
91. ### english

is ap physics very challenging and difficult because i need to know if im going to be able to go through t next term
92. ### physics

You throw a ball downward from a window at a speed of 2.7 m/s. How fast will it be moving when it hits the sidewalk 2.8 m below?
93. ### Quantum Physics

What is the probability current density of a particle with wavefunction ψ(x,t)=exp(iℏ(px−Et))?
94. ### Physics

An automobile is traveling 65mph. Its brakes decelerates at 6.0mps. How long will it takes to stop the car?
95. ### Physics

Calculate the force of gravitational attraction between two spheres of mass 10.1kg and 45.2 kg that are 38.5m apart.
96. ### Physics

Calculate the force of gravitational attraction between two spheres of mass 10.1kg and 45.2 kg that are 38.5m apart.
97. ### PHYSICS

At what height above Earth's surface is the gravitational acceleration reduced from its sea-level value by 0.40%?
98. ### Physics

An object 6.70 cm high is placed 15.1 cm in front of a convex mirror with radius of curvature of 8.55 cm. Where is the image formed?
99. ### Physics

Where does it takes less time to boil eggs: in a pan of boiling water or in a pressure cooker?
100. ### Physics

Where does it takes less time to boils eggs: in a pan of boiling water or in a pressure cooker?