# Math/Physics

215,206 results, page 59

what are three possible thicknesses that a soap film should be to transmit yellow light ? (Lambda=590nm)
2. ### Physics help!!!

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

Does the de Broglie model assert that an electron must be moving in order to have wave properties?
4. ### Physics

What is the tension in a 1-meter string that is spinning a 0.5-kg rock in a horizontal circle 3 times per second?
5. ### physics

what is the force of gravity on a mass of o.5kg hanging by a string in a beaker of water
6. ### General Physics I

What is the spring constant of a 129N object the vibrates at a period of 4.98s?
7. ### physics

A jet travels at 434 m/s. How long does it take to travel 294 m? Answer in units of s
8. ### 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 .
9. ### physics

A car starts from rest and accelerates for 6.1 s with an acceleration of 3.1 m/s2. How far does it travel? Answer in units of m.
10. ### Physics

What is the gravitational force between two runners standing 100 meters apart on a track, if their masses are 60 kg and 75 kg respectively?
11. ### physics

A car starts from rest and accelerates for 2.8 s with an acceleration of 2.1 m/s2. How far does it travel? Answer in units of m
12. ### physics

a pendulum swing with a speed of 1.5 m/s at its lowest point. How high will it rise before it stops
13. ### physics

What type of contamination involves Rags, tie wraps, and safety wire?
14. ### physics

2) The weight of tank is 50 000 kg, area of his belts is 5 m2. What pressure acts on the ground?
15. ### Physics

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

A standing wave has wavenumber 200 rad/m. What is the distance between two adjacent nodes.
17. ### physics

A roller coaster travels 101 ft at an angle of 56.8 above the horizontal. How far does it move horizontally?
18. ### Physics

After undergoing through 90 degree compton scattering, the fraction of energy lost by photon is A) 10 % B) 50 % C) 20 % D) Zero E) None
19. ### Physics

Throw a stone straight up in the air. At its highest height what is its speed? Is it accelerating then?
20. ### Physics

Air in a balloon does 25 J of work while absorbing 81 J of heat. What is the change in internal energy?
21. ### physics

a 10-kg bos slides down a frictionless ramp with acceleration 3.6 m/s calculate the weight anlge? f ?
22. ### 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.

If a woman hasa mass of 50 kg calculate her weight in neutons
24. ### Physics

What is the circular force of a 150 g yoyo swung around on a 1.00 m string at a velocity of 5.0 m/s (in Newtons)?
25. ### physics

How might you determine the age of a star from an Earth-based telescope? What measurements might you make?
26. ### 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?
27. ### physics

An object accelerates uniformly from rest at a rate of 2 m/s2 for 3 s and then 5 m/s2 for 15 s. Find its final velocity?
28. ### physics

a 150g-iron ball at 95 Celsius is dropped into a cavity in a block of ice
29. ### physics

Write down the unit in which reaction rate is measured in this observation? Equation is Zn(s)+I~ZnI
30. ### Physics

An object accelerates uniformly from rest and covers 8m in 2 seconds. What is the distance covered in the third second?
31. ### Physics

What does shifting the phase between the sources in a double slit experiment do to the interference pattern?
32. ### physics

What force is needed to accelerate a child on a sled with the total mass of 43kg at 1.5m/s
33. ### physics

If a spring has a constant of 20N/m how much potential energy does it store if it is compressed 2m in joules? <3
34. ### Physics

What is the net force required to accelarate a 2000kg car to 6m/sec us equation F=ma
35. ### physics

What is the kinetic energy of a car of mass 1900 kg moving at a constant speed of 21 m/s
36. ### Physics

if you push a wall with a force of 50N, the work you do is...... (a)500J (b)5000J (c)50J (d)zero
37. ### Physics

What is the significance in the observation of discrete spectral lines in the emission spectrum of hydrogen??
38. ### Physics honors

If a racer runs at an average speed of 7m/a how far will she run in 1 min 45 seconds?
39. ### physics

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

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

Consider a particle with initial velocity that has magnitude 12.0 m/s and is directed 60.0 degrees above the negative x axis.
42. ### Physics

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

A 56 kg swimmer jumps off of 15 m tower. Find the swimmers velocity when hitting the water.
44. ### Physics

If an object has a work of 300J and a displacement of 20m, how would I determine the net force?
45. ### Physics

If an object on Pluto has a mass of 10 kg and a weight of 6.6 N, what is the acceleration due to gravity at its location?
46. ### Physics

Find the slope of the line that is tangent to the given function’s graph for the specified value of the independent variable. f(x) = 9x – 8; x=10.
47. ### Physics

A ball travels 200cm in the first 2sec and 220cmin the next 5sec. Find the velocity at 7s
48. ### physics

Find the electric field at the folowing radii from the center of this charge configuration.
49. ### Physics

Find the slope of the line that is tangent to the given function’s graph for the specified value of the independent variable. f(x) = 9x – 8; x=10.
50. ### 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?
51. ### Physics

How much work is required to lift a bag of wheat (mass 50kg) to a height of 2.4m?
52. ### Physics

An object is shot upwards, from the ground, with an initial velocity of 120 m/s. How high will it be after 4.0s?
53. ### Physics

Given that q = +17 mu C and d = 14 cm, find the magnitude of the net electrostatic force exerted on the point charge q2.
54. ### physics

A car moves at a constant speed of 24m/s. How long (in minutes) will it take to travel 15.0 km?
55. ### physics

How center mass affects an arrows distance traveled (include source)
56. ### Physics

What is the smallest a flat mirror can be while still being able to see your full reflection? I need to show my work/explain. Can anyone help me?
57. ### Physics

What are differences and similarities of the electric charges (+ and -) and the magnetic forces (North and South)?
58. ### physics

A standard 1 kilogram weight is a cylinder 48.5 mm in height and 52.0 mm in diameter. What is the density of the material?
59. ### Physics

A car travelled at an average speed of 200km/h. What distance does it cover in 10minutes.
60. ### Physics

At what other angle (other than 45 degrees) could a gun be fired to travel the same horizontal distance Is the answer: There is not one?
61. ### physics

Why is there always a difference between the experimentally calcuated error for resistance, and the actual components tolerance value?
62. ### physics

Can an adult male be rescued from a fall by tying a rope to a car's axle?
63. ### Physics

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

If Michael Jordan has a vertical leap of 1.29 m, then what is his takeoff speed and his hang time?
65. ### physics

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

What acceleration will you give to a 25.8 kg box if you push it horizontally with a net force of 89.6 N?
67. ### Physics urgent

What is the weight of a 76 kg astronaut on the Moon where the value of 'g' is only 17% the strength of 'g' on the Earth? (Answer should be expressed in N).
68. ### Physics

A meteoroid is speeding through the atmosphere, traveling east at 14.8 km/s while descending at a rate of 12.5 km/s. What is its speed, in km/s?
69. ### Physics

If you take a bite of pizza, the sauce may burn your mouth while the curst, as the same temperature will not. Explain.
70. ### physics

a body travels 200 cm in the first two second and 220 cm in the next 4 seconds.what will be the velocity at the seventh second from the start.
71. ### physics

YOU PUSH A REFRIGERATOR WIT HA FORCE OF 50N AND IT MOVES 3 METERS ACROSS THE FLOOR
72. ### Physics

What force is required to stop a 1500-kg car in a distance of 0.20 m if it is initially moving at 2.2 m/s?
73. ### physics

if a ball is thrown down at an inital speed of 22 m/s, what will be its position after 2.8 seconds? acceleration is 9.8 m/s squared
74. ### physics

2) The weight of tank is 50 000 kg, area of his tracks is 5 m2. What pressure acts on the ground?
75. ### Physics

An electric fan is rated 240W,25V.Which fuse value is more suitable for the set
76. ### physics

2) The weight of tank is 50 000 kg, area of his belts is 5 m2. What pressure acts on the ground?
77. ### Physics

A bike starts from rest and accelerates to 20 m/s over a period of 6 seconds. What is the acceleration of the car?
78. ### physics

Why is it better to put ince rather than an equal mass of cold water into a drink you want to chill?
79. ### physics

Why is it better to put ince rather than an equal mass of cold water into a drink you want to chill?
80. ### physics

Find the intensity level 10m from a 0.24 watt source of sound energy?
81. ### 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?
82. ### Physics

A dog is running at 3.0 m/s for 3.6 km. How long did it take him to arrive at his destination? (Give answer in seconds)
83. ### physics

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

Henry drives off a 200m high cliff at 132m/s.How far out,how far down,and how far all together did he travel in 2.6seconds
85. ### Physics

Which color light is the result of a greater energy transition, red or blue?
86. ### physics

how much energy would it take to melt 250kg of lead assuming it starts at 30 degrees centigrade.
87. ### 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?
88. ### physics

A car starts from rest and accelerates for 8.7 s with an acceleration of 4.4 m/s 2 . How far does it travel? Answer in units of m.
89. ### Physics

A meteoroid is speeding through the atmosphere, traveling east at 14.8 km/s while descending at a rate of 12.5 km/s. What is its speed, in km/s?
90. ### physics

If you tried to smuggle gold bricks by filling your backpack, whose dimensions are 63 cm*29 cm*20cm, what would its mass be?
91. ### physics 101

A 72.9 kg man is standing on a frictionless ice surface when he throws a 1.6 kg book at 11 m/s.
92. ### physics

how much heat enrgy must be taken in 24 gram of water to reduce the temperature of 7 degrres celcius
93. ### physics

If a car accelerates from rest at a constant 5.5m/s^2, how long will be required to reach 28m/s?
94. ### physics

Calculate the coefficient of kinetic friction for tyre rubber on the road surface.
95. ### Physics

Is there any point along the path of a projectile where its velocity and acceleration vectors are: a) perpendicular to each other? b) parallel to each other?
96. ### 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.
97. ### physics

What is the gravitational potential energy of a ball with a weight of 72 N when it is sitting on a shelf 1.4 m above the floor?
98. ### physics

2) The weight of tank is 50 000 kg, area of his belts is 5 m2. What pressure acts on the ground?
99. ### Physics

1. Name three different kinds of graphs that are often used to plot information and discuss the value of each. i have no idea what the heck this means
100. ### Physics

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