# Physics!

74,730 results, page 40
1. ## Physics

Two organ pipes are imitating a sound of 12 Hz, one of them is 12 m long. What is the length of the other pipe?
2. ## physics

A car accelerates from rest at 2.57 m/s2. What is the velocity at the end of 5.4 s? Answer in units of m/s
3. ## physics

How much time will elapse between seeing lightening and hearing the thunder happening 8000 m from you?
4. ## physics

what is net force acting on the ball after attaning terminal velosity?
5. ## physics

How much time will elapse between seeing lightening and hearing the thunder happening 8000 m from you?
6. ## Physics

explain the input energy and out put energies of two kitchen machines
7. ## Physics

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

Find the height from which you would have to drop a ball so that it would have a speed of 6.4 m/s just before it hits the ground.
9. ## Physics 221

How much charge flows through a 12 –V battery when a 2.0 mF capacitor is connected across its terminals?
10. ## Physics

The gravitational force between two electrons that are 0.98 m apart is 5.64 10-71 N. Find the mass of an electron. (Use G = 6.67 10-11 N·m2/kg2.) Do you use F=G(m1*m2)/r^2???

Give 2 examples of force pairs when you do your homework?
12. ## Physics 2

the microwave protion of the spectrum has wavelengths ranging from 1 mm to 1 m. find the corresponding frequency?
13. ## physics

The gravitational force between two electrons that are 0.98 m apart is 5.64 10-71 N. Find the mass of an electron. (Use G = 6.67 10-11 N·m2/kg2.) Do you use F=G(m1*m2)/r^2???
14. ## physics

a car moving through road what is the direction of force and surface of acting
15. ## college physics

the speed of light is about 3.00 x 10^8 m/s. convert this figure to miles per hour
16. ## Physics pls help

At what depth in water is the pressure equal to 2m atmosphere. Explain how
17. ## physics

find the acceleration of a bicycle slowing fron 3m/s to a stop in 5 seconds?
18. ## 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?
19. ## physics

how to show with the help of a model that resistivity of a conductor increases with increase in temperature?
20. ## physics

Determine the percent error in this approximate value. (There are 365.24 days in one year.)
21. ## physics

explain the input energy and out put energies of two kitchen machines
22. ## physics

what is the kinetic energy of a 200 g bullet travelling at a velocity of 400 m/s?
23. ## physics

a boy drops a mango from a tree it falls without rebound what happens to it's momentum
24. ## 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?
25. ## 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?
26. ## physics

true or false an object with a mass of 9.0 kg has an acceleration of 3 m/s. the force acting on it is 3n
27. ## Physics

Find the attractive force bet a 50 kg girl and a 60 kg boy, if they stand 2.00 m apart.
28. ## physics

If body is rotating 30r.p.m in clockwise what is angular velocity and it direction
29. ## physics

The x-component of an electric field vector E = (200 N/C, 45 deg) is ___N/C.
30. ## physics

A sports car accelerates from rest to 86km/h\, km/h in 5.2s\, s . What is its average acceleration in m/s2{\rm{m/s}}^2.
31. ## physics

If Zulfiqar fold this colored paper as shown in the image, which cube will he get? A C B D
32. ## Physics

A car speeds up from 12 m/s to 20 m/s in 6.4s.If its mass is 1200 kg,what force must its engine provide ?
33. ## Physics

A 2200. Kg vehicle is traveling at 26 m/s what is the force needed to stop it in 21 seconds?
34. ## physics

two identical objects move with speeds of 5.0 m s and 25.0 m s. What is the ratio of their kinetic energies?
35. ## Physics

a football is kicked in 36 meter per second and 30 degree angle with land.After 1 second,how much it's velocity will ?
36. ## physics

Determine the normal force for a laundry basket with a mass of 4.3 kg in each of the following situations
37. ## physics

TWO R WHEN CONNECTED IN PARALLEL GIVE RESULTANT VALUE BECOMES 9 OHM CALCULATE VALUE OF REESISTIVITY
38. ## physics

how does temperature affect the time it takes to reach thermal equilibrium?
39. ## Physics/Cars

Does the mass of the car matter when driving on the road? When skidding?
40. ## physics

what is the pressure exerted on the ground by a cube which has a weight of 600n and a side of 1m
41. ## Physics Classical Mechanics

Hi Enjoy, Thanks. I got the acceleration right and the Force wrong. Need help on Question 2.

43. ## Physics

calculate the magnitude and direction of the resultant of two vectors 5N and 7N inclined at an angle 30° to each other
44. ## physics

what is your age in seconds? this is a conversion problem. someone help please with all the multiplication and division... very confused. THANK YOU
45. ## physics

A carton of juice remains intact even after you have sucked out all the drink from it. please explain
46. ## physics

What is the momentum of a proton travelling at v = 0.95c in the x-direction in the reference frame?
47. ## Physics

Finding of radius of capillary tube without knowing surface tension
48. ## physics

what law is it when gravity pushes down on a rocket that is accelerating at a rate of 270 km/h
49. ## AP Physics

A car slows down from 18 m/s to rest in a distance of 91 m. What was its acceleration, assumed constant?
50. ## Physics

I've read all my resource materials and looked for outside resources already and i can't find an equation for this. I would appreciate any help
51. ## physics

A bus that is traveling at 31.0 km/h, speeds up at a constant rate of 3.7 m/s2. What velocity does it reach 6.8 s later?

How many current paths are there in a parallel circuit connection?
53. ## physics

explain the input energy and out put energies of two kitchen machines
54. ## physics

how do you find the magnitude of the net force if you have 2 forces acting on an object: 8.4 N[S] and 7.5 N[E]
55. ## physics

If the electron experiences a force of 5.6 x 10-6 N, how large is the field between the deflection plates?
56. ## Physics

A charge q1=7.8x10^-6 C is placed at the origin. q2=-3.4x10^-6 C is placed at y=-1 m, x=2 m. q3=-9.2x10^-6 C is placed at y=4 m. What is the total force on q1? On q3?
57. ## PHYSICS

TWO FORCES F1 AND F2 ARE ACTING AT RIGHT ANGLE TO EACH OTHER FIND THE EXPRESSION FOR THE RESULTANT FORCE?
58. ## physics

how the frequency of sound produced will change in an aluminium string of 15 cm length
59. ## physics

how do you find the verticle component of velocity of a projectile just as it strikes the ground?
60. ## physics ! HELP PLEASE !!!!1

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

Explain why voltage doesn't change when connecting resistance in series
62. ## physics

Explain how the pitch of the roaring sound relates to the length of the tube.
63. ## physics

What net force is needed to accelerate a 1.6 × 103kg automobile forward at 2.0 m/s2?
64. ## physics

What angle does the tangent to the curve y(x)=sin^2(x/9)+16sin(x/9) at x=9\pi make with the x-axis?
65. ## physics

can anyone give me a site that "best explains" about Rotational motion/Angular. thanks a lot.. :)
66. ## physics

A meteoroid is speeding through the atmosphere, traveling east at 24.5 km/s while descending at 11.6 km/s. What is its speed, in km/s?
67. ## physics

An electron travels 3.75 m in 6.41 × 10−8 s. How fast does it travel? Answer in units of cm/s
68. ## physics

the air pressure in the tyres of a car increases during driving.Explain.
69. ## Physics

What is the wavelength of visible light emit- ted at 4.2 × 108 MHz?
70. ## Physics

Why is the CM of a 1.00m length of pipe at its midpoint, whereas this is not true for your arm or leg?
71. ## Physics (Kinematics Check)

What is the average velocity of a dropped brick that falls 4.0 m? vi = 4.0 m/s vf = 0 m/s a = 9.81 m/s^2 t = vf-vi / a t = -4/9.81 t = 0.41 s v = d/t v = 4.0/0.41 v = 9.81 m/s^2 <----------
72. ## physics

A dart is thrown horizontally toward X at 30 m/s as shown. It hits Y 0.29 s later. The distance XY in centimeters is:
73. ## physics

a go cart starts at rest and accelerates to 40 m/s in 200m what is the acceleration of the cyclist?

Rearrange the equation : d=v2t - 1/2at(squared) to solve for a
75. ## physics

spring has k=82 N/m use a graph to determine the work needed to stretch it from x= 3.8 cm to x=6.2 cm where x is the displacement
76. ## PHYSICS

A hypothetical planet has a mass 1.55 times that of Earth, but the same radius. What is g near its surface?
77. ## physics

At what distance (in m) from a 3.8 mC charge is the electric potential equal to 32 V? (k = 9 x 109 Nm2/C2)
78. ## physics

A bus slows down uniformly from 65.0 km/h to 0 km/h in 20.0 s. How far does it travel before stopping? Answer in units of m

How many current paths are there in a series circuit connection?
80. ## physics

An object is thrown vertically upward with a speed of 19.1 m/s. How high does it rise?
81. ## physics

a 15 kg bucket is raised to paint a ladder with an acceleration of 3 m/s.^2 what is the tension in the rope?
82. ## 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?
83. ## Physics

Would electrons be ejected from aluminum if the incident violet light has a wavelength of 4.00 x 10-7 m?
84. ## physics

A magnetic field is uniform in a region of radius 10 cm, and increasing at 0.02 Tesla/second.
85. ## Physics

An airplane has an airspeed of 100km/h north. if there is a 30km/h headwind what is its groundspeed
86. ## Physics sci & eng

A force of 5.8 N acts on a 16 kg body initially at rest.
87. ## physics

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

a cannon fire a .453 kg shell with initial velocity vi=9m/s in the direction 50
89. ## physics

An object is dropped from a height H. During the final second of its fall, it traverses a distance of 57.8 m. What was H?
90. ## Physics

If the gravitational force between the electron (9.11 ✕ 10-31 kg) and the proton (1.67 ✕ 10-27 kg) in a hydrogen atom is 1.06 ✕ 10-47 N, how far apart are the two particles?
91. ## PHYSICS

What is the force of attraction between two masses 5kg and 8kg at a distance of 60cm apart.
92. ## Science

Name 3 physical (physics) occurances that happen within a roller coaster ride?
93. ## 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?
94. ## Physics

Does angular acceleration on a spinning disk increase centrifugal force?
95. ## Physics

How long is Mayra, a ballerina, in the air when she leaps striaght up with a speed of 1.23 m/s?
96. ## Physics

How long is Mayra, a ballerina, in the air when she leaps straight up with a speed of 1.23 m/s?
97. ## physics

Calulate the amount of substance io 120g of trioxocarbonate (iv)ion,co2
98. ## Physics

A rocket is fired with 9.37 km/hr, find the maximum altitude. (no air resistance)
99. ## physics

why does the filament of a bulb does not melt though it heats more than 3400 degree celcius
100. ## physics

In one dimension ,how does energy depend on size of region if an electron is confined there ??