# Math/Physics

215,130 results, page 60

1. ### physics

find the acceleration of a 3 kg mass as it moves with a constant speed of 4 m/s along a circle of radius 2 m.
2. ### 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.
3. ### Physics

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

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

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

how much heat is needed to raise the temperature of 5kg of silver from 20 degrees C to 96 decgrees C?
7. ### physics

A ball is thrown straight up with an intial velocity of 85 ft/s. At what times will it have a height of 200 ft?
8. ### 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.
9. ### physics

What is the acceleration of a 23 kg pail of cement that is pulled upward (not sideways!) with a force of 300 N?
10. ### Physics

Name any Margins of error that would happen in the lab "Which path requires the most energy? (gas)
11. ### Physics

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

What is the peak current through a 400–W room heater that operates on 120–V AC power?
13. ### Physics

When striking, the pike, a predatory fish, can accelerate from rest to a speed of 3.6 m/s in 0.11 s . Distance?
14. ### physics

if W(a) and W(g) are workdone on a person by air resistance and gravity respectively, during the first 600m of his fall what is the relationship between W(a) and W(g)
15. ### physics

Bob jumps into a pool, after he stops moving and becomes stationary i the water. What happens to his k energy?
16. ### physics

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

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

compare and contrast sound and electromagnetic waves in terms of types, speed, etc.
19. ### physics

compare and contrast sound and electromagnetic waves in terms of types, speed, etc.
20. ### Physics

A horse on a merry-go-round is 20 ft from the center and travels at 10 mph. What is its angular speed?
21. ### 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.
22. ### physics

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

what causes an object to experience an artificial gravitational acceleration in a rotating space station
24. ### Physics

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

True or false, the acceleration of an object and the net force acting on it are proportional.
26. ### Physics

What Net Force is necessary to give a 2.0 kg mass initially at rest an acceleration of 5.0 m/s^2? Is the answer 10. N?
27. ### physics

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

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

If the period of the moon were 31 days while its orbit radius 3.8x10^8m, what would the mass of the Earth be?
30. ### Physics

how to find the max height of a cat that is thrown at 9.8 m/s and is in the air for a total of 4 seconds.
31. ### physics

a 1540 kg truck is traveling at 95 km/hr. what average force is required to stop in 10 seconds
32. ### Physics

A 700 kg plane is traveling at 90 m/s at an altitude of 1500 m. What is the total mechanical energy?
33. ### physics

using newtons third law explain what is meant by action and reaction pairs of forcess
34. ### physics

A stone is thrown vertically upward with a speed of 14.0 m/s from the edge of a cliff 89.0 m high
35. ### quantum physics

Suppose a particle has wavefunction Ïˆ(x,t=0)=Aexpâˆ’(x^2/2l^2). What is the average value (expectation value) of p^, âŸ¨p^âŸ©, for this state at t=0?
36. ### physics

a truck travels at 90km/hr W for 10 min. then at 110 km/ hr for 38 km what was the trucks average velocity
37. ### Physics

If an electron moves perpendicular to the same field with this speed,what is the radius of its circular orbit?
38. ### Physics

what is the distance that a satellite must be from Earths surface if it's period of rotation is 1 day? I really not sure where to even start..
39. ### physics

Bob jumps into a pool, after he stops moving and becomes stationary i the water. What happens to his k energy?
40. ### physics- urgent

determine the estimated uncertainty for the area of circle with a radius of 10.45+-0.5cm
41. ### physics

calculate the period of a ball tied to a string of length 1.9 m making 1.5 revolutions every second
42. ### physics

how much work can a 50.0kg wreckin ball traveling at 5.00m/s do when striking a building
43. ### physics

compare and contrast sound and electromagnetic waves in terms of types, speed, etc.
44. ### Physics

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

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

If a spring is compressed 2.0 cm from its equilibrium position and the ncompressed an addition 4.0 cm, how much more work is done in the second compression than in the first?
47. ### Physics

As one exhales, what change in energy takes place between the diaphragm and the air in the lungs?
48. ### Physics

At what projection angle will the range of a projectile equal to 5 times its maximum height?
49. ### 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?
50. ### Physics

Calculate the average speed (in km/h)of Larry, who runs to the store 3.6 kilometers away in 40 minutes.
51. ### Physics

Use the Second law of thermodynamics to explain why an ice cube cools off your warm soda.
52. ### physics

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

what caused a little puddle of water to appear under the syringe tip after ten minutes in the sun?
54. ### Physics

A 0.055 kg golf ball leaves the tee at 50 m/s. what is its change in momentum (impulse) ?
55. ### physics-

In a string and pulley problem, will friction increase or decrease the tension.can you please explain if you can?
56. ### 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
57. ### physics relativity

How fast would you need to be travelling relative to an observer in order for them to see a 15% increase in your mass?
58. ### 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
59. ### physics

expressions for the force experienced by the charge when it enters the magnetic field at an angle?
60. ### PHYSICS

what are the components of a vector that has a magnitude of 1.5 m at the angle of 35 degrees with respect to the positive x axis
61. ### physics

stone dropped from a tower if steady wind blows in the horizontal direction
62. ### Physics

A dog is running at 9.1 m/s for 7.8 km. How long did it take him to arrive at his destination? (Give answer in seconds)
63. ### physics

a ball is dropped from the top of a 5m tall building. what is the velocity when it hits the ground?
64. ### Physics

Find the maximum height reached by a ball thrown upward at a velocity of 95 ft/s
65. ### Physics

What happens to your tongue when you lick an aluminum ice cream scrapper just after it has been used? Does it stick to the scraper? Why?
66. ### physics

A boy drops a mango from a tree it falls without rebound wat happens to its momentum
67. ### physics

A man walks 15m north then 20m at 32° E of N and then 11 m at at 15° S of W determine his net displacement
68. ### Physics

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

Is it possible for a frictional force to increase the mechanical energy of a system? If so, give examples.
70. ### physics

which object will have higher inertia a rock of 20kg or a hollow ball of 22kg

72. ### PHYSICS

How is the evolution of animal like the long necked giraffe explained by Charles Darwin?
73. ### physics

What is the force a rock exerts if it's mass is 36,000 kg and the acceleration due to Gravity is 9.8 m/s2
74. ### Physics

someone in a car going past you at the speed of 31m/s drops a small rock from a height of 1.5m.

A long jumper jumps with the initial velocity of 12.0 m/s at an angle of 20 degrees. what is the displacement of x?
76. ### physics

A car accelerates uniformly from 10m/s to 24m/s.Ehat is its average speed?
77. ### Physics

Two positive charge of 12cand 8c are 10cm apart each other. The work done in bringing them 4cm closer is
78. ### Physics

How close would the masses 0.545 kg and 0.109 kg have to be in order for the gravitational force between them to have a magnitude of 1.03 N? Please Help!
79. ### physics

find the magnitude and direction of a combination of 48N east and 14N north.
80. ### Physics

How high will a 1.60-{\rm kg} rock go if thrown straight up by someone who does 75.0 J of work on it? Neglect air resistance.
81. ### Physics

Find the force necessary to stop a 900 kg jetta traveling at +25 m/s in a time of 5.0 seconds.
82. ### physics

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

A bicycle with tires .064 m in diameter travels 8.1 km. 1. How many revolutions do the wheels make?
84. ### Physics

I want to become an astonomer or study astrophysics but I didnt do maths a level can I still do it? Is there any way you can help me or provide aN alternative
85. ### physics

Good job "Drwls", your answer to my bowling ball question worked. Way to go!
86. ### Physics

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

A ball is allowed to freely from certain height.It covers a distance in 1st second equals ti: A)2g B)g C) g/2 C)none
88. ### Physics

If 9.30 x 10^5 J of energy are transferred to 2.00kg of ice at 0 deg C, what is the final temperature of the system?
89. ### physics

If you move 10 km North, 10 km East, and 10 km South, a) What is your displacement? b) What is the total distance you traveled?
90. ### Physics

When you jump vertically 0.86 meters above the ground, what is your acceleration when you reach your highest point?
91. ### physics

how much energy is stored in a pinball machine spring (constant=750N/m) that is compressed 3 cm?
92. ### physics

Explain the conditions where the assumption of total mechanical energy of a system is conserved.
93. ### science

How can I find the physics behind why a wheel moves faster or slower than other wheels? Is this friction?
94. ### PHYSICS

At what height above Earth's surface is the gravitational acceleration reduced from its sea-level value by 0.40%?
95. ### 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?
96. ### short physics question

What is the significance of the fact that both the horizontal force and motion are both forwards?
97. ### Physics

Leroy, who has a mass of 72 kg, is skateboarding at 5.9 m/s when he smacks into a brick wall and comes to a dead stop in 0.2 s.
98. ### Math

im lost evaluate 30 divided by 5*3-2 all over/2-2divided by 3 Math - jim, Tuesday, October 20, 2009 at 5:39pm You 'll have to clarify that. Do you mean: 30 / (5*3-2)/ (2-2/3) ? Math - Diana, Tuesday, October 20, 2009 at 7:40pm no Ill try to write it out thirty divided by 5 ...
99. ### Physics

How would a physics expert respond to the following suggestions made by three airline executives? Write a script of the expert's response for performance in front of the class. Airline Exectutive A: Since the earth rotates from west to east, we could operate 'static flights'--...
100. ### Math

What is the best way to study for a math test? Also, what is the best/most efficient way to write a math test? The format of my tests is usually basic questions, and then word problems. I'm always pressed for time at the end, so I have to scramble when answering the word ...