Math/Physics

208,687 results, page 70

Physics Help

Charge Q is uniformly distributed around the perimeter of a semicircle of radius R. What is the electric field at the circle's center?

Physics

A man carries a 10 kg sack of groceries in his arms with a force of 50 N as he walks forward a distance of 10 m. How much work has he done?

physics

If the 60-kg player is running forward at 7.0m/s when she makes contact with the dummy, what is the players velocity at the end of the 1.20s impact?

physics

a particle completes 4 revolution/sec on a circular path of radius 0.25m.calculate angular velocity

Physics

A block weighing 5.7 N requires a force of 2 N to push it along at constant velocity. What is the coefficient of friction for the surface?

Physics

A block weighing 5.7 N requires a force of 2 N to push it along at constant velocity. What is the coefficient of friction for the surface?

Physics

True or False. When non-conservative forces are present, the amount of work done increases with the length of the path.

PHYSICS

A stone propelled from a catapult with a speed of 50m/s attains a height of 100m.Calculate:(a)the time of flight?

physics

Three resistors, 1.17, 2.84, and 3.65Ω, are connected in series across a 20.3-V battery. Find the power delivered to each resistor.

physics

Three resistors, 1.17, 2.84, and 3.65Ω, are connected in series across a 20.3-V battery. Find the power delivered to each resistor.

physics

let p and E denote the linear momentum and energy of emitted photon respectively if the wavelength of incident radiation is increased----

physics

A car with a weight of 5000.0 N is accelerated across a level surface at 2.5 m/s^2. What is the net force acts on the wagon? (g= 9.81 m/s^2)

Physics 11

If two objects weighing 5 kg and 7 kg are dropped from a height of 64 m and 36 m, respectively. What will be the ratio of times taken to reach the ground? Thanks.

physics

If You do 100 j of work to elevate a bucket of water,what is its gravitational potential energy relative to its starting position?

physics

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

Physics

An object is dropped from rest. What is its instantaneous speed when it has been in motion for 7 s? The acceleration of gravity is 9.8 m/s 2 . Answer in units of m/s

Physics

What happens to the vibrating length of a resonance tube if a loud speaker is brought close to a displacement node?

Physics

Find the frequency of a sound wave moving in air at room temperature (20.0) with a wavelength of 0.667 m. Is the formula F=1/T?

Physics

The electric field lines surrounding three charges are shown in the figure below. The center charge is q2 = -15.9 µC.

physics

a toy moves on a horizontal surface with a speed of 3m/s.it makes 8 turns in 5 seconds,whats the diameter of the wheel?

physics

Just wanted to say a quick thanks to Steve and Damon, figured it all out, thanks guys, awsome!!!

physics

If only conservative forces are acting, total mechanical energy (KE + PE) is not necessarily conserved. True or False?

physics

32 kg child practicing rock climbing, she feel but the rope hung on with a tension of 253N. find acceleration??

physics

A 0.49 cm high object is placed 8.5 cm in front of a diverging lens whose focal length is -7.5 cm. What is the height of the image?

Physics

Neglecting air resistance, how high could a 0.15kg baseball be thrown if it is throw straight up at a speed of 25m/s?

college physics

How many seconds would it take a 7.00hp motor to raise a 475 lb boiler to a platform 38.0 ft high?

Physics

Show that 480 W of power is expended by a weightlifter when lifting a 60-kg barbell a vertical distance of 1.2 m in a time interval of 1.5 s.

physics

what pressure (in atm) would be exerted by 76g of fluorine gas in a 1.5 litre vessel at -37 degrees Celsius?

Physics

Two identical positive charges exert a repulsive force of 7.0 10-9 N when separated by a distance of 3.2 10-10 m. Calculate the charge of each. _C

physics

A body of 150kg is located at a height of 45m. If allowed to fall freely to the ground. What will be its velocity on impact?

Physics help!

The range of human hearing extends from approximately 20 Hz to 20,000 Hz. Find the wavelengths of these extremes at a temperature of 2°C. 20 Hz? 20000 Hz?

physics

TWO METALLIC WIRES AB ARE CONNECTED IN PARALLEL A ASS LENGTH L & RADIUS R V AS LENGHT 2L AND 2R FIND RESISTANCE

physics

A football is kicked with a velocity of 31 m/s at an angle of 41. What is the ball's acceleration in the vertical direction as it flies through the air?

physics

Vector A has magnitude 73 units and direction, counterclockwise from east, of 5.5 degrees. What is the value of its x-component to 1 decimal place?

physics

A plane travelling at 15.2 m/s is brought to rest in a distance of 132 meters. To the nearest hundredth of a m/s2 what is the magnitude of its acceleration?

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

physics

The average speed of a bicycle, an athlete and a car are 18 km/hr, 7 m/s and 2 km/min respectively. Which among these is the fastest and the slowest one?

Physics

An object is thrown directly up (positive direction) with a velocity (vo) of 20.0 m/s and do= 0. Determine how long it takes to get to the maximum height of 24.0 m.

physics

Two 4.3 kg physical science textbooks on a bookshelf are 0.25 m apart. What is the magnitude of the gravitational attraction between the books

physics

starting from rest, find a 54.6kg child’s speed at the bottom of a 15.5m tall slide if it is assumed to be frictionless

Physics

How far will a car travel if it starts from rest and experiences an acceleration of magnitude 3.75m/2^2 forward for 5.65 s? Answer is 59.9m

Physics

How far will a car travel if it starts from rest and experiences an acceleration of magnitude 3.75m/2^2 forward for 5.65 s? Answer is 59.9m

physics

If a cyclist traveling at 14.0m/s skids to a stop in 5.60 s, determine the skidding distance assume uniform acceleration? Answer is 39.2m

physics

A pendulum bob swinging at a velocity of 10 m/sec would rise how high from its lowest point of its swing

Physics

What is the minimum work in joules needed to push a 1840 kg car 14.0 m up a 12.5 degree incline? (Ignore friction.)

Physics

At its peak, a tornado is 60.0 m in diameter and carries 500 km/h winds. What is its angular velocity in revolutions per second?

Physics

What is the final velocity of a hoop that rolls without slipping down a 5.00-m-high hill, starting from rest?

physics

How many times a minute does a boat bob up and down on ocean waves that have a wavelength of 43.0 m and a propagation speed of 5.25 m/s?

Physics

Show that 480 W of power is expended by a weightlifter when lifting a 60-kg barbell a vertical distance of 1.2 m in a time interval of 1.5 s.

physics

A trolley while going down an inclined plane has an acceleration of 2 cm/s2.What will be the velocity 3 secs after its start?

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?

Intro to Physics

With scanning probe microscopy technology, we see not actual atoms but rather images of them. Explain.

physics

A commuter backs her car out of her garage with an acceleration of 1.6 m/s2. How long does it take her to reach a speed of 2.3 m/s in seconds

physics

A boy sledding down a hill accelerates at 1.20 m/s2. If he started from rest, in what distance would he reach a speed of 7.00 m/s?

physics

A boy sledding down a hill accelerates at 1.20 m/s2. If he started from rest, in what distance would he reach a speed of 7.00 m/s?

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?

physics

if a ball is tossed from ground level upward at a speed of 44 m/s how long will it take to reach its maximum height

physics

A car comes to rest uniform deceleration at the rate of 5.8 m/s2 for 14.3 seconds. What is distance did it travel during this time??

Physics

It takes you 10min to walk with an average velocity of 1.2m/s to the north from the bus stop to the restaurant entrance. What is your displacement?

Physics

How long does it take T-Rex to reach its food 200m away assuming that he starts from rest and accelerates at 4.00 m/s2?

Physics

Show that 480 W of power is expended by a weightlifter when lifting a 60-kg barbell a vertical distance of 1.2 m in a time interval of 1.5 s.

physics

if you are stuck in the middle of a frictionless frozen lake with only your backpack, how can you get back safely to solid ground?

physics

if you are stuck in the middle of a frictionless frozen lake with only your backpack, how can you get back safely to solid ground?

physics

if you are stuck in the middle of a frictionless frozen lake with only your backpack, how can you get back safely to solid ground?

Physics

Problem 3- If a bug can jump straight up to a height of 0.5 m. a) what is its initial speed as it leaves the ground? b) How long is it in the air?

physics

A 4.00kg kg bucket of water is accelerated upward by a cord of negligible mass whose breaking strength is 73.0N N .

physics

Forces of 9.93 N and 1.23 N act at right angles on a reddish-green block of mass 3.02 kg. How much acceleration occurs?

physics

What maximum height will a 318.3 m driver each if it is launched at an angle of 17.0 tothe ground? The acceleration due to gravityis 9.81 m/s2.

physics

A flower pot with a mass of 3.8kg is hanging by 2 wires that make an angle of 48° from the horizontal. what is the tension in each wire?

physics

A flower pot with a mass of 3.8kg is hanging by 2 wires that make an angle of 48° from the horizontal. what is the tension in each wire

physics

A merry-go-round makes 23 revolutions in a 2.8min ride. Part A What is its average angular speed in rad/s?

Physics

the 8kg mass of an object moves in a distance of radius 10cm at 15m^2.calculate the angular velocity

PHYSICS

What's the total mechanical energy of a 300kg satellite in circular orbit 1400km above Earth's surface?

Physics

How much force is needed to hold a nearly weightless but rigid 1-L carton beneath the surface of water?

physics

Find the distance by which a 42cm diameter, 9.4m tall concrete column is compressed when it supports a 12900kg load

physics

if a teacher wanted to demonstrate mass in the classroom, which of the following objects should she use? a ruler or an eraser

physics URGENT

3. Using conceptual meaning of g = Fg/m [N/kg], answer the following: a) What does the spring scale read on the surface of the Moon?

Physics

Why do some cooks put ice in the pot to cook meat? Explain then prove your answer by solution.

Physics

Why is an ice cube at 0°C more effective in cooling soft drink than the same mass of water at0°C?

Physics

Why do some cooks put ice in the pot to cook meat? Explain then prove your answer by solution?

Physics

A copper ball 2 cm in radius is heated in a furnace to 400 degree celsius. if its emissivity is 0.3, at what rate does it radiates?

PHYSICS

Name and discuss the levels of organization in a multicellular organism starting from the basic unit or structure of life.

physics

A 0.0400 kg ice cube at -30.0°C is placed in 0.400 kg of 35.0°C water in a very well insulated container. What is the final temperature?

Physics

Consider the static equilibrium diagram below. What is the net force acting along the positive x-axis?

physics

An 87.0 kg fullback moving east with a speed of 5.0 m/s is tackled by a 83.0 kg opponent running west at 2.92 m/s, and the collision is perfectly inelastic.

Physics

suppose you have 3 resistors, each of value 0f 30 omega. List all the different resistances that you can obtain by combining them

Physics

Another pendulum swings to and fro at a regular rate of two times per second. Show that its period is 0.5 s.

physics

Eight charges (50μC each) are arranged on the corners of a cube side length 1 cm. What is the magnitude of the force on each charge in Newtons?

PHYSICS(HELP)

Eight charges (50μC each) are arranged on the corners of a cube side length 1 cm. What is the magnitude of the force on each charge in Newtons?

Physics

If a current is flowing with a value of 5.9 A, how much electron charge passes any single point in 25 seconds? A) 1.9 x 1020 e

Physics

Please help! 400 calories of heat are added to 40grams of water at 20celcius . What's the final temp reached ?

Physics

An object is dropped from a platform100 ft high. Ignoring wind resistance, how long will it take to reach the ground?

Physics

How much momentum does a .01 kg ping pong ball have if it is traveling at 25 miles/hour? (1.609km=1 mile)

Physics

How much momentum does a .01 kg ping pong ball have if it is traveling at 25 miles/hour? (1.609km=1 mile)

physics

Calculate the pressure exerted on the floor by the heel if it has an area of 1.45 cm2 and the woman's mass is 58.0 kg. Express the force in N/m2 and lb/in

physics

the work function of zinc is 3.6ev what is maximum enegy photoelectron by ultraviolet wave of light 3000angstrome

Physics

we have to transpose the following equation to find p, but I don't quite understand how to come up with the correct answer: x^2/p^2 + y^2/q^2 = 1 Appreciate help, thanks

physics

A.Use newtons first law to explain why whiplash occurs? B.why are cars fitted with head rests?

algebra based physics

Two protons in a nucleus are separated by 8.0×10−15m . What's the potential energy of the pair?

Physics

A 2473 kg elephant is walking at 3 m/s on a flat surface. How much kinetic energy does he have? Answer in Joules or J

Pages

  1. 1
  2. 2
  3. 3
  4. 4
  5. 5
  6. 6
  7. 7
  8. 8
  9. 9
  10. 10
  11. 11
  12. 12
  13. 13
  14. 14
  15. 15
  16. 16
  17. 17
  18. 18
  19. 19
  20. 20
  21. 21
  22. 22
  23. 23
  24. 24
  25. 25
  26. 26
  27. 27
  28. 28
  29. 29
  30. 30
  31. 31
  32. 32
  33. 33
  34. 34
  35. 35
  36. 36
  37. 37
  38. 38
  39. 39
  40. 40
  41. 41
  42. 42
  43. 43
  44. 44
  45. 45
  46. 46
  47. 47
  48. 48
  49. 49
  50. 50
  51. 51
  52. 52
  53. 53
  54. 54
  55. 55
  56. 56
  57. 57
  58. 58
  59. 59
  60. 60
  61. 61
  62. 62
  63. 63
  64. 64
  65. 65
  66. 66
  67. 67
  68. 68
  69. 69
  70. 70
  71. 71
  72. 72
  73. 73
  74. 74
  75. 75
  76. 76
  77. 77
  78. 78
  79. 79
  80. 80
  81. 81
  82. 82
  83. 83
  84. 84
  85. 85
  86. 86
  87. 87
  88. 88
  89. 89
  90. 90
  91. 91
  92. 92
  93. 93
  94. 94
  95. 95
  96. 96
  97. 97
  98. 98
  99. 99
  100. 100