# Physics!

74,730 results, page 49
1. ## physics

A particle starts moving with acceleration 2 m/s2. distance travelled by it in 5th half second is..??
2. ## physics

An automobile driver puts on the brakes and decelerates from 30.0 m/s to zero in 15.0 s. What distance does the car travel?
3. ## Physics

Is Gc (32.2 lbmft/lbfs^2) equal to gravity? I think it is, but I'm kinda confused about the whole concept. Could someone explain it to me? Thank you very much.
4. ## Physics

A ball is thrown straight up at 24.0 m/s. Ignore the effects of air resistance in your calculations.After 2.00 s?
5. ## physics

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

The photoelectric effect occurs only when the incident light has more than a entain minimum
7. ## Physics

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

Which force acts opposite of the direction of displacement of the object? I think it would be friction...but could it be spring?
9. ## physics

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

If a car rolls gently(vo=0) off a vertical cliff, how long does it take to reach 85km/h?
11. ## Physics

Find the change in the force of gravity between two planets when the distance between them is decreased by a factor of 4.7
12. ## physics

a mass if 10kg move with a velocity of 4ms-1find it kinetic energy.
13. ## physics

how old would you be, when you returned from a trip while traveling at 99.5% C if your relatives that stayed at home, were 10 years older?
14. ## physics

A constant net force of 1500 N gives a toy rocket an acceleration of 2.5 m/s2. what is the mass in kg?
15. ## Physics

How does mass affect the motion of objects falling freely under the influence of gravity?
16. ## Physics

If a tuning fork puts out a tone at 440 Hz, what is its wavelength in air at 25 degrees?
17. ## physics

In a certain right triangle, the two sides that are perpendicular to each other are 7.00 m and 8.30 m long. What is the tangent of the angle for which 7.00 m is the opposite side?
18. ## physics

distance a cannonball travels when shot horizontally with a velocity of 28.3 at 30 degrees? I'm not sure what formula I need to use. Please help.
19. ## physics

Find the final speed of the train assuming no friction. Answer in units of m/s
20. ## Physics

If a tuning fork puts out a tone at 440 Hz, what is its wavelength in air at 25 degrees?
21. ## physics

What is the average current through a conductor that carries 4 375C during a 2 min time period?
22. ## physics

a fire hose held near the ground shoots water at a speed of 6.4m/s, at what angle should
23. ## Physics

Emily rides her horse 48 km in 3 hours.What is her average speed in kilometers per hour?
24. ## Physics

The magnification of an object 2km tall where placed in 150m in front of a plane mirror is ?
25. ## Physics

A projectile is shot straight up from the earth's surface at a speed of 1.20 x 104 km/hr. How high does it go?
26. ## physics

what force is necessary to stop a 20 g bullet moving at 200 m/s as it penetrates a wood at a distance of 4 m?
27. ## physics

c). at what speed does it hit the ground? d). what total length of time is the ball in the air
28. ## Physics - please check over

Could I please get some further assistance on a question I posted earlier? I'm not getting the correct answer and I'm not sure what I'm doing wrong.
29. ## physics

a40w motor conectedto a 9v battery can lift an object 40m in 10s
30. ## Physics

What would be the average velocity of an object falling 1.25m from the rest, just as it strikes the ground?
31. ## physics

a 2.1 weight receives 210 j of kinetic energy by a launcher, which is pointed straight up.
32. ## physics

an object takes 0.35 seconds to hit the floor, what height did it fall from? is the way to calculate it h = gt^2 / 2 so would it be = h = .5 * 9.8 * 0.35^2
33. ## Physics

Where should most of the mass be for an industrial fly wheel? Why? can't find any thing about this in my book. need help answering this.
34. ## physics

A 1.0kg ball initially at rest rolls down a plane at 35 degrees. pls i really need help
35. ## physics

The three vectors in the figure below have magnitudes a = 2.45 m, b = 3.15 m, and c = 15.0 m and angle θ = 36.5° find x component of vector a
36. ## Ap physics

If you are driving 108 km/h along a straight road and you look to the side for 3.0 s, how far do you travel during this inattentive period?
37. ## physics

calculate the total area of the walls of a room 5m long 4m wide and 2.5m high
38. ## PHYSICS

A 30 kg. balloon is filled with 100 m to the third power of helium. how much force is needed to hold it down?
39. ## Physics 11

A girl stands 2.5 m infront of a plane mirror. If she sees someone else 2.0 m behind her, how far is she from the image of that person?
40. ## Physics

It took a car driver 30min to travel a distance of 50km. What is the average speed?
41. ## physics

how long does it take a softball to cross homeplate at 43 feet if the ball is going 65 miles per hour?
42. ## physics

A 8.20 cm tall object is placed 30.0 cm in front of a concave mirror with a focal length of 4.20 cm. What is the magnification?
43. ## physics

Find the electric field at the folowing radii from the center of this charge configuration.
44. ## physics

2 balss,one of iron and the other of aluminium,will experience the same upthrust, when dipped in water when both have equal what?
45. ## physics

Which floats with most of its volume below the surface? A) None of these.B) An oak log.C) All of these.D) An iceberg.E) A mountain range.
46. ## Physics

If I dropped a bowling ball from the empyre state building, at what velocity would it descend?
47. ## Physics

During takeoff, a plane goes from 0 to 50 m/s in 8s. What is its acceleration? Halos fast is it going after 5 s? How far had it traveled by the time it reaches 50 m/s?
48. ## physics

Forces of 3 N and 4 N act the right angles on a block of mass 5 kg. Show that the resulting acceleration is 1 m/s².
49. ## Physics

a 100 N chandelier hangs from the ceiling on 8 chains. What is the tension force on each chain?
50. ## physics

Calculate a person's hang time if he moves horizontally 2 m during a 1.39 m high-jump.

52. ## physics

I need to know the resistivity of german silver wire. I've looked at a few Google sources and I've seen several different results. Anyone know which value I should use?
53. ## physics

In the ideal case of zero resistance, a ball rolling on a level surface will accelerate
54. ## physics

An airplane starts from rest and accelerates at 11.5m/s^2. What is its speed at the end of a 655m runway?
55. ## Physics

How fast must a plane fly at a latitude of 41.9° so that the sun stands still relative to the passengers?
56. ## physics

A person can jump to a height of 1.5m on surface of earth. Find the velocity with which he jumps.
57. ## physics (electric charges)

Hi, How can you charge an electroscope negatively? Is it by using a positively charged rod? Can someone please help me? Thank you :)
58. ## College physics

To what temperature will 7700 J of heat raise 3.0 kg of water that is initially at 10.0 degrees C?
59. ## 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
60. ## physics

A ball strikes against the floor and returns with double velocity.In which type of collision is it possible?
61. ## physics

Calculate the effective value of g, the acceleration of gravity (in meters/second^2), at 5100 km above the earth's surface.
62. ## Physics

At a given temperature, what relationship appears to exist between a gas particle's mass and its speed?
63. ## 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 .
64. ## physics

So if I have two light bulbs with different wattage how could I show what happens to them in series and parallel. The voltage remains the same.
65. ## Physics

How does the speed frequency distribution graph change for a given gas as the temperature is increased?
66. ## Physics help!!!

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

the displacement of a particles is given by S=A+Bt+Ct^2.deduce the values of the constant A,B,and C appearing in the equation
68. ## physics

how long does a car with an acceleration of 2.0 m/s^2 take to go from 10m/s to 30m/s?and show the solution how do you get the answer.
69. ## physics dimension

write down the dimensions of moment of inertia and surface tension coefficient.
70. ## physics (electric charges)

Hi, How can you charge an electroscope negatively? Is it by using a positively charged rod? Can someone please help me? Thank you :)
71. ## Physics

what is magnitude of the centripetal if the tangential speed of the car is 2.0m/s and the radius of the wheel is 83m
72. ## physics

find the angle of projection at the horizontal range is twice the maximum height of a projecyile
73. ## Physics

What is the wavelength of light that can cause a transition of an electron in the hydrogen atom from the orbit with n = 6 to n = 8?(answer in µm)
74. ## physics

determine the kinetic energy of a boy mass 40kg running with velocity of 3m/s
75. ## physics

two forces of 10N and 7N respectively are applied simultaneously to an object . The minimum value of their resultant is, in newtons?
76. ## physics

a car is uniformly decelerated from 90km/hr in a time of 10 sec calculate the 2 acceleration
77. ## Physics

If you are 2.0 s from being directly under a window that is 11 m above the sidewalk your standing on, and someone throws a water ballon will you get hit?
78. ## physics

A meteoroid is speeding through the atmosphere, traveling east at 15.5 km/s while descending at a rate of 10.6 km/s. What is its speed, in km/s?
79. ## Physics

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

The diameter of the earth is about 7.6 x 10^3 miles. What is the linear velocity of a person, on the equator, in feet per second?
81. ## physics

Calculate the distance Michael will travel if he maintain an average speed of 9.4 m/s for 2.2 seconds
82. ## physics

if a race cars velocity increases from 4 m/s to 36 m/s over a 4 s time interval, it average acceleration would be 10 m/s2.
83. ## Physics

An electromagnetic radiation has a frequency of 5.00 X 10^14 Hz. Calculate its wavelength in a vacuum in metres and nanomatres?
84. ## Physics

A block of mass 8.1 kg is pulled to the right by an applied force of 76.2 N. If the acceleration is 0.84 m/s^2, how much friction must be present?
85. ## physics

What is the wavelength of the peak of the blackbody radiation curve for the human body (T = 310 K)?
86. ## Physics

is the average random kinetic energy of the molecules decreasing ? ( In cooling curve)
87. ## physics

What is the resistance of a 40 watt light bulb if it is it to full brilliance by a current of .33amps?
88. ## physics

Calculate the distance Michael will travel if he maintain an average speed of 9.4 m/s for 2.2 seconds.
89. ## physics

Which floats with most of its volume below the surface? A) None of these.B) An oak log.C) All of these.D) An iceberg.E) A mountain range.
90. ## Physics

As a rocket accelerates upward, its thrust remains constant but its acceleration increases. what is the cause of this?
91. ## physics

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

What is the work required to move a proton 1 cm along the 7 volt equipotential line?
93. ## physics

A drag racer accelerated from 0 to 475km/h in 4.88 s. Assuming a constant acceleration, how far did it travel?
94. ## physics

Calculate the velocity of a skateboarder who accelerates from rest for 6.7 seconds down a ramp at an acceleration of 6.5 m/s2
95. ## 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?
96. ## Physics

In a gas kept at a constant temperature, all molecules move with the same speed. True or false?
97. ## Physics

A cube of ice weighing 18 grams sublimes into vapor. How many liters of gas will you get?
98. ## physics

A bus moves from rest with a uniform acceleration of 2ms(square)for the first 10s.
99. ## physics

if an object is pushed along a rough horizontal surface and moves at a constant velocity, then...
100. ## physics

How much heat in KJ is needed to change 3.0 kg of ice at -10C into (superheated) steam at +150C ?