# Math/Physics

214,834 results, page 47

1. ### Physics

Calculate the momentum of a bullet moving with a velocity of 1000m/s ,if it has a mass of 0.01kg
2. ### physics

It takes 2.75s for the rock to hit the water at 54.45mph, how high is the bridge?
3. ### PHYSICS

WHAT IS THE VELOCITY OF A CAR THAT TRAVELS AROUND A TRACK THAT HAS A RADIUS OF 15M IN 2 MINUTES
4. ### Physics

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

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

a mass if 10kg move with a velocity of 4ms-1find it kinetic energy.
7. ### Physics 30

A frictionless pulley (a 2.0 kg is on the floor while the 3.0 kg is 0.5m high) . when released, momentum of the 2kg is?
8. ### PHYSICS

What reaction occurs between hydrogen and helium which gives the heat and of the sun

10. ### Physics

I drop an object from a height of 500.0 m. How long does it take to hit the ground?
11. ### physics

A bus is traveling 30 m/s and travels 20m. How far does it travel froom each point?
12. ### Physics

P= 231fraction numerator f t asterisk times l b over denominator s end fraction t= 14.3s W= ?
13. ### physics

How much kinetic energy does a 0.03 kg bullet traveling at a speed of 300 m/s have?
14. ### Physics

Find the magnitude of the dot product of the two vectors B=6i+j+2k, D=-1+3j. What is the angle between B and D
15. ### physics

The displacement of a particle is given by S = a+bt+ct^2. Deduce the dimensions of the constants,a,b,and c appearing in the question.
16. ### physics

determine the kinetic energy of a boy mass 40kg running with velocity of 3m/s
17. ### 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)
18. ### physics

if the distance between two bodies is increased by 25% then % change in the gravitational force is
19. ### physics

Which is the vector quantity that describes the shortest path between two points?
20. ### Physics

Do you think the sun's gravity is greater or less than that of all the other planets?
21. ### physics

what is the effective weight of a person of mass 60kg carried vertically up in a rocket with an
22. ### physics

What is the maximum walking speed of an adult man whose legs are each 1.2 m long?
23. ### Physics

Two vector of 5N and 6N flow they oriented to get the resultant of 7N,9N?( please solve this question)
24. ### PHYSICS

What is the potential energy of a 150 kg diver standing on a diving board that is 10 m high?
25. ### physics

at what attitude the value of g would become one forth than on the surface of the earth?
26. ### Physics

a westward force of 20 N acts on a 2.0 kg object moving eastward at 60 m/s for 2.0 s. What is the resulting velocity?
27. ### physics

The equation y=5sin(3x-4)where y is in millimeters x is in metres and t is in seconds,represents a wave motion
28. ### physics

calculate the net force required to give a 3000kg trucks an acceleration of 2.5m/s^2
29. ### Physics

What is net capacitance if maximum potential is 40 volt and instant charge is 60 coulomb.?
30. ### physics

4N force applied on a body mass 20kg then calculate work done in 3sec?
31. ### Physics

What is the magnitude of the momentum of a 10,000-kg truck whose speed is 12.0 m/s? What is the kinetic energy?
32. ### Physics

An object of area 15sqcm and height 2 cm has a mass of 50g. what is its density in SI system
33. ### Physics

Determine the magnitude of current I3. Let the voltage of the bottom battery VB =13.0 volts and r= 1.0 Ω.
34. ### physics

a car moving through road what is the direction of force and surface of acting
35. ### Physics,Mthe

a body of mass is100an objet and volume is 10 .find the density
36. ### physics

A man walked 10 m north, then 5 m south. What distance did he walk? What is his final displacement?
37. ### physics

the time of flight of an object projected with speed 20m/s at an angle 30¡ã with the horizontal is
38. ### Physics/Science

How much heat must be removed from 15.0g of water at 10°C to become ice at 0°C?
39. ### PHYSICS/SCIENCE

How much heat must be removed from 5.0g of water at 10°C to become ice at 0°C ?
40. ### PHYSICS

A BALL MOVES ROUND A CIRCLE WITH RADIUS OF 20CM CALCULATE THE DISTANCE
41. ### Physics

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

What is the resultant displacement when a ship sail 200km north and then 150km west
43. ### PHYSICS

What is the change in momentum of a car weighing 1500 kg when its speed increases from 36 km/h to 72 km/h uniformly?
44. ### physics

How much heat is needed to raise the temperature of 2kg of water to 10K?
45. ### Physics

A glacier advances at 7 × 10−6 cm/s. How far will it move in 3.7 y? Answer in units of cm. Plz help! I don't get it.
46. ### physics

the speed of a certain wave is 3.00cm/s. if its frequency is 0.20hz, what are its wavelength and period

how do i figure out how fast a car is going when all i know is frequency?
48. ### physics

An airplane travels 250 km/h due West for 2 hours. Its average velocity is:
49. ### Physics

How much power is required to move a 1500 kg elevator at a constant velocity of 2.5m/s.
50. ### physics

If a hair dryer is rated at 900 W, how much energy does it require in 5 minutes?
51. ### Physics

Determine the radius R of an object undergoing circular motion at a velocity of 54 m/s with an acceleration of 90 m/s^2
52. ### Physics

If a racehorse starts from rest and accelerates at a rate of 4.7 m/s2, how long does it take the horse to go 20 m?
53. ### physics

. Two positive point charge of 12 μC and 8 μC are 10 cm apart. The work done in bringing them 4 cm closer is,
54. ### Physics

A ball thrown downward with an initial velocity of 20m/s.what will be itsvelocity after 5s
55. ### physics

What’s the direction of the electric field caused at the point (–2, 3) by an electron located at the origin?
56. ### physics

What’s the direction of the electric field caused at the point (–2, 3) by an electron located at the origin?
57. ### physics

When the experimental set up is immerse in water of refractive index n=1.5.what will be the charge in beta?
58. ### physics

the speed of the train increased from 15 mi/hr to 25 mi/hr in distance of 500 ft. calculate the average acceleration in ft/s^2
59. ### physics

How much work is done in lifting a 300 Newton rock 10 meters from the ground?
60. ### Physics

A mango is dropped and falls freely from rest what are its position and velocity after 1.0s,2.0s, and 3.0s
61. ### Physics

A cheeta can run with a speed of 29 m/s. Determine the distance travelled by a running cheetah in 8.6 s. D= 29/8.6 = 3.3s
62. ### Physics

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

150g of ice at 0'c is mixed with 300g of water at 50'c. calculate the temperature of a mixture
64. ### physics

What is the initial angle 0f projection of a projectile for which the range and the maximum height are equal?
65. ### Physics

What is power output of a 60 kg person who walks up a 4 meter flight of stairs in 4.0 seconds?
66. ### physics

A space vehicle accelerates uniformly from 80 m/s at t = 0 to 165 m/s at t = 10.0 s .How far did it move between t = 2.0 s and t = 6.0 s ?
67. ### Physics

A body is dropped from rest from a height of 8m. How long does it take to reach the ground?
68. ### physics

Uranium 235 has 92 protons in its atoms. Calculate the number of neutrons in this atom
69. ### physics

The motion of the truck is described by the equation V = 50t – 5t^2.Find: a.Value from t = 1.5 s to t = 5.0 s. b.Vinst at t = 3.0 s.
70. ### Physics

Make a position vs time graph of the following scenario: an object moves at 5.0 m/s for 4.0 s then at -2.0 m/s for 3.0 s.
71. ### Physics

What happens to the focal length of a converging lens as the radius of curvature is increased?
72. ### physics

A car has a velocity of 25m and accelerates uniformly to 45m/s in 10seconds.what is the acceleration?
73. ### Physics

For a pendulum that completes fifteen complete swings in 34.8 seconds, how much is the frequency?
74. ### Physics

What is the mass of water that has its temperature raised from 27°C to 32°C when it is heated by 5.0 x 106 J of heat energy?
75. ### Physics

Calculate the force acting on a body of mass 10 kg moving with a uniform velocity of 2m/s.
76. ### Physics

Finding of radius of capillary tube without knowing surface tension
77. ### Physics

Would electrons be ejected from aluminum if the incident violet light has a wavelength of 4.00 x 10-7 m?
78. ### physics

the air pressure in the tyres of a car increases during driving.Explain.
79. ### Physics

A gas initially occupies 4.5L at 350k and 22kPa. How many moles and molecules are present?
80. ### physics

Consider a drop of mass 1g falling from a height 1km.what is work done by gravity?
81. ### physics

On planet Mars, A pendulum has a length of 4L and period of 5T.what is the acceleration due to gravity ?
82. ### Physics

When a cubic meter of steam at 100°C condenses, how much energy is released?
83. ### physics

The density of a gas is 1.25 kg m – 3 at N.T.P. Find the Root mean square velocity of its molecules.
84. ### Physics

What is the force on the charge located at x = +8.00 cm in Figure 17.40(a) given that q = 1.00 nC and a = 7.50? (The positive direction is to the right.)
85. ### Physics

A car of 900kg accelerates uniformly from rest to a speed of 30 m/s in 15 seconds.what is its power?
86. ### 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?
87. ### Physics

Calculate the weight of an object whose Mass is 5kg.(take g=10m\s
88. ### Physics

Calculate the weight of an object whose Mass is 5kg.(take g=10m\s
89. ### Physics!

A 40 kg girl runs up a flight of stairs that is 34 m high. How much work does this require?
90. ### 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?
91. ### Physics

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

calculate the kinetic energy of a body of mass 2kg moving with a velocity of 0.1m/s.
93. ### Physics

A and B are vectors in the same plane. If A= 8i+6j. Find the vector B such that |A+B| = 14.14 units and A is perpendicular to B.
94. ### Physics

Is there a relationship between the size of a musical instrument and the frequency of the sounds it produces? If so, then what is it?
95. ### Physics

What type of "fluid" Would exist if the temp was 850°c and pressure was 1.75 atm?
96. ### Physics

How come heat engines are more efficient when run at high temperatures?
97. ### Physics

In the olden days Christmas lights were wired in series. Why was this not very festive?
98. ### Physics

Find out the resultant of two forces of 4N and 7N acting at an angle of 140°
99. ### physics

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

An object inside of the focal point of a concave mirror produces an image that is...