# Math/Physics

215,876 results, page 67
1. ## PHYSICS

Calculate the radial acceleration of an object on the ground at the earth's equator in m/s2, turning with the planet.
2. ## physics-non calc

a hammer was released from rest vi=0m/s taking 1.12 seconds to fall 1 meter. How do you solve that
3. ## Physics II

find the pressure at the bottom of a vessel 76cm deep when filled with a) water b)mercury (sp.g. 13.6)

what is the index of refraction of a medium in which the speed of this radiation is 2.54X10^8 m/s? I don't even know where to start...
5. ## physics

the mathematical form of the thin-lens equation predicts that a graph of 1/p vs 1/q should have a slope of -1, explain?
6. ## physics

Write the equation for fill factor in terms of V_max, V_oc, J_max, and J_sc. FF =
7. ## physics

A boy sledding down a hill accelerates at 1.30 m/s2. If he started from rest, in what distance would he reach a speed of 8.00 m/s?
8. ## Physics

How does the idea of magnetic fields arising from circulating currents relate to permanent magnets?
9. ## Physics

Determine Centripetal Acceleration acting on the person standing at the equator? (the radius of earth is given)
10. ## physics

A 5.0 m diameter merry-go-round is initially turning with a 4.6 s period. What is the speed of a child on the rim?
11. ## physics

How can the equation be prove:maximum height,time of flight and maximun range in projectile?
12. ## physics

A stone is projected vertically upward with a speed of 20 m/s. a. What is its velocity at the end of 2s? b. What is the height reacted after 2s?
13. ## physics

According to Newton's version of Kepler's third law, how would the ratio T^2/r^3 change if the mass of the Sun were doubled?
14. ## physics

Is the acceleration due to gravity more or less atop Mt. Everest than at sea level? Defend your answer.
15. ## 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
16. ## physics

What is the number of the highest harmonic that could be heard by a person who is capable of hearing frequencies up to 1.00×104 ?
17. ## 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?
18. ## physics

A ball is thrown from a height h and another from 2h.find the ratio of time taken by the two balls to reach the ground.
19. ## physics

five joules of work are needed to shift .5 C of charge from one place to another. the potential differences between the places is
20. ## physics/science

i don't understand why radioactive waste is stored underground is it because it is a harmful substance
21. ## College Physics

How much would you have to raise the temperature of a copper wire (originally at 20 ∘ C) to increase its resistance by 30% ?
22. ## Physics

A ball rolls off the edge of a balcony at 8.0 m/s. Find its speed after 3.8 s in the air. Use g = 10. m/s2 and enter m/s as unit.
23. ## physics

How much centripetal force is needed to keep a 0.20 kg ball on a 1.50 m string moving in a circular path with a speed of 3.0 m/s?
24. ## Physics

find the altitude change of a 10,000 kg fighter which climbs and in doing so loses 100 m/s of airspeed
25. ## Physics

If a bullet is shot at velocity of 400 m/s and hits a copper plate, how much heat will be produced?
26. ## physics

a2kg hockey puck is sliding across the frictionless ice at 6m/s.how much force is required to keep it moving at 6m/s
27. ## PHYSICS

a constant force of 6.00N acts on a 3.00kg object for 10.0s. what are the changes in the objects momentum and velocity?
28. ## Physics

find the altitude change of a 10,000 kg fighter which climbs and in doing so loses 100 m/s of airspeed
29. ## Physics

An object is thrown vertically upward with a speed of 31.8 m/s. How long does it take to reach this highest altitude?
30. ## Language arts

Einstein was however also publishing papers in physics. How To create this sentence? a.was, however, also b.was however, also c. was, however also d.no error I chose b
31. ## Physics

What are the restrictions on the orbit of a communications satellite if it is to appear motionless in the sky as viewed from any location on earth?
32. ## physics

A ball is thrown from a height h and another from 2h.find the ratio of time taken by the two balls to reach the ground.
33. ## physics

a cyclist moves around equilateral triangle6kn/h10km/h,12km/hfind average speed?
34. ## physics

a 5kg suitcase slides 2m down a frictionless ramp incline at 45 degress. How fast is it going at the bottom?
35. ## Physics

Can anyone help? the resistance of the side lights on an automobile are 10 ohms. How much current flows in them when connected to 12 volts
36. ## Physics

A stone is thrown straight up. To reach a height of 6.49 m above its release point, what must its initial speed be in m/s?
37. ## physics

If you heat a thin circular ring in a oven, does the rings hole get larger or smaller.why?
38. ## Physics

Could someone tell me how to start to solve this? Please How much current flows in a 1000-ohm resistor when 1.5 volts are impressed across it?
39. ## physics

A stone is thrown straight up. To reach a height of 6.74 m above its release point, what must its initial speed be in m/s
40. ## Basic Physics

If a swimming pool has dimensions; 28.2 5m x 10.0m x 2.30m, when it is full of water, what is the force on the bottom ?
41. ## physics

List four effects that can be observed that demonstrate light travels in straight lines. Does anybody know the answer??
42. ## physics

A body is executing of amplitude 1m . Its velocity while passing through mean position is 10m/s . Find its frequency
43. ## physics

3 person are moving triangle place.their velocity are equal. they are follow each other after which time they should meet with each other?
44. ## Physics

Calculate the work required to be done to stop a car of 1500kg moving with a velocity of 60km/hr?
45. ## physics

if the masses remain the same ,but the separation is decreased to one-half of the original distance . what happens to the gravitation force?
46. ## Physics

List the particles that make up an atom. What are their charges? How are they arranged? wHat is the approximate amu of each particle?
47. ## physics

What is the magnitude of the average acceleration of a skier who, starting from rest, reaches a speed of 6.8 m/s when going down a slope for 2.5 s?
48. ## physics

A 15 kg box slides across the floor with an initial velocity of +7.6 m/s. It comes to a stop after sliding +14.8 m. How much friction was present?
49. ## PHYSICS

lIST THE PARTICLES THAT MAKE UP AN ATOM. wHAT ARE THEIR CHARGES? hOW ARE THEY ARANGED? wHAT IS THE APPROXIMATE AMU OF EACH PARTICLE?
50. ## physics

A particle is projected from ground in a vetical direction at t=0 sec. at t=0.8 s, it reaches h=14m .It will again come to the same height at ?
51. ## physics

At highway speeds, a particular automobile is capable of an acceleration of about 1.6 m/s2. At this rate, how long does it take to accelerate from 81 km/h to 107 km/h?
52. ## Physics

A student walks from her apartment a distance d=139m to the bus stop at a speed of v1= 1.40m/s.
53. ## physics

a particle starts moving from rest with uniform acceleration . it travels a distance y in the next 2 sec
54. ## Physics

What is the car's forward acceleration,at a speed of 30m/s,when the driving force on the wheels is 650N
55. ## Physics

How much work is done by a girl weighing 450N while carrying a 2kg package up a 2m flight of stairs?
56. ## Physics

If U-238 splits into two even pieces, and each piece emits an alpha particle, what elements are produced?
57. ## Physics

How long will it take a 1080 W motor to lift a 330kg piano to a sixth-story window 16.0m above?
58. ## Physics

Initial velocity is 21 m/s, the angle is 40 degrees, 20 meters away from the wall. How long is the ball in the air for?
59. ## Physics

700 kg plane is traveling at 90 m/s at altitude of 1500 m what is planes total mechanical energy
60. ## physics

when two lenses of focal length +10cm and -5cm are placed in contact then find the net power ?
61. ## Physical Science

What are the noninvasive benefits of the medical technologies that rely on physics of elementary particles?
62. ## physics

at time t=0 the driver starts to brae determine how long the bus takes to stop
63. ## Physics

In general, what conditions with observable effects make magnets interact with non-magnet materials?
64. ## Physics

A boy sledding down a hill accelerates at 1.65 m/s2. If he started from rest, in what distance would he reach a speed of 7.30 m/s?
65. ## Physics

An elevator is moving upward at 1.03 m/s when it experiences an acceleration 0.31 m/s2 downward, over a distance of 0.73 m. What will its final velocity be?
66. ## physics

What is the magnitude of the average acceleration of a skier who, starting from rest, reaches a speed of 7.9 m/s when going down a slope for 7.4 s?
67. ## Physics

If a man weighs 900 N on the earth, what would he weigh on jupiter, where acceleration due to gravity is 25.9 m/s^2?
68. ## Physics

1. Could a horizontal axis of rotation be used satisfactorily in an experiment uniform circular motion? Explain
69. ## physics

What is the free-fall acceleration in a location where the period of a 2.87 m long pendulum is 3.4 s? Answer in units of m/s 2
70. ## PHYSICS

A Carnot type engine has a reservoir of 1000 K with an efficiency of 50%. Find the temperature of the sink.
71. ## Physics

The position of some object moving along the x-axis is observed to be x(t)=9cos(pi*t/3+pi/4) meters. Find the frequency.
72. ## Physics

How long will it take a 1080 W motor to lift a 330kg piano to a sixth-story window 16.0m above?
73. ## Physics

When you swim across a river does the time it takes to get to the other side depend on the rate of flow of the water?
74. ## physics

Find the force when two poles to strength 100 and 90 cgs units are placed at a distance to 20 cm a part.
75. ## Physics

How can you easily increase the magnetic field strength inside a current-carrying coil? Could someone help?
76. ## physics

A hunk of cast concrete with a weight of 10 N will float if it displaces 10 N of water. True or False
77. ## physics

A spring has k = 88 N/m. Use a graph to determine the work needed to stretch it from x = 3.6 cm to x = 5.6 cm, where x is the displacement from its unstretched length.
78. ## physics

a baseball is thrown horizontally at a velocity of 35 m/s from a height of 1.5 m. How long does it take to hit the ground? how far does it travel?
79. ## Physics

A boy sledding down a hill accelerates at 1.55 m/s2. If he started from rest, in what distance would he reach a speed of 6.90 m/s?
80. ## physics

show the expression v=at is dimensionally correct where v represents speed an acceleration and t is instant time?
81. ## physics

in einstein's famous equation e=mc^2, describing the relationship between matter and energy, the units for E are m=====>kg, c=====>m/s a) kg m/s b)kg m/s^2 c) m^2/s^2 d)kg m^2/s^2 I think its either B or D but indecisive...
82. ## physics

you are to determine the amount of sugar dissolved in solution. how can you use polaroid filters to complete the task?
83. ## Physics

I have a 1000 ohm resistor with a measured resistance of .967 how do I use submultiples or mutliples to get it in the SI units?
84. ## physics

It two objects are thrown off a tall building and one is three times the mass of the other, do they hit the ground at the same time?
85. ## physics

If I threw a ball vertically at an initial speed of 34.5 m/s, how many seconds would it take to reach its maximum height?
86. ## physics

Determine the net force needed to cause a 1310kg sports car to accelerate from 0 - 28.6m/s[fwd] in 5.6 s
87. ## physics

what is the acceleration due to gravity at a distance of 2 earth radii abouve earths surface?
88. ## PHYSICS ASAP!

A Football is kicked 66.6 meters in 5.39 seconds. What was the initial velocity? Magnitude and Direction
89. ## Physics

What is the difference between 110, 220 and 440 volts. How does amperage play a role with voltage
90. ## college physics

an automobile traveling at 25.0 km/h along straight,level road accelerates to 65.0 km/h in 6.00s what is the acceleration
91. ## physics

an elevator weighing400kg is to be lifted up at a constant velocity of 3cms-1 what would be the minimum power of motor to be used
92. ## PREAP Physics

From what height would a compact car have to be dropped to have the same kinetic energy that it has when being driven at 100 km/hr?
93. ## physics

five joules of work are needed to shift .5 c of charge from one place to another. the potential differences between the places is
94. ## Physics

Express the angular velocity of 36 rpm (revolutions per minute) in units of radians per second (rad/s).
95. ## Physics

You swing a 2.40kg stone in a circle, using the full length of a thin 60.0cm rope.
96. ## Physics

If 2.4 m3 of a gas initially at STP is compressed to 1.6 m3 and its temperature raised to 30oC, what is the final pressure?
97. ## physics

For an object in equilibrium the sum of the torques acting on it vanishes only if each torque is calculated based on your:
98. ## 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
99. ## physics

what is the magnitude and direction of the electric field 20.0 cm directly above an isolated 33.010 neg6 C charge?
100. ## Calculus

no one on physics forums seems to know the answer so I was wondering if you guys could help post anser on these forms of course if you can help my question is here h t t p : / / w w w . p h y s i c s f o r u m s . c o m / s h o w t h r e a d . p h p ? t =