74,760 results, page 64
1. ## physics

If you throw a ball straight upward at a speed of 11 m/s, How long will it take to return to its starting point?
2. ## physics

If you throw a ball straight upward at a speed of 11 m/s, How long will it take to return to its starting point?
3. ## 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
4. ## physics

If you throw a ball straight upward at a speed of 11 m/s, How long will it take to return to its starting point?
5. ## physics

Find the work done by 2.32 moles of an ideal gas if its volume doubles at a constant temperature of 22.6°C.
6. ## Physics

A car accelerates uniformly from rest at 3m/s(square).What is its velocity after travelling a distance of 24m?
7. ## physics

If a race car completes a 4mi oval track in 73.2s, what is the average speed in units of mi/h?
8. ## physics

What is the magnitude of the average acceleration of a skier who, starting from rest, reaches a speed of 10.5 m/s when going down a slope for 3.18 s?
9. ## physics

how much time does it take for a student running t an average speed or 5.00m/s to cover a distance of 2.00km?
10. ## physics

If a race car completes a 4mi oval track in 73.2s, what is the average speed in units of mi/h?
11. ## Physics

A car travels in a straight line for 3.9 h at a constant speed of 83 km/h . What is its acceleration? Answer in units of m/s2
12. ## physics

a particle starts moving from rest with uniform acceleration . it travels a distance y in the next 2 sec
13. ## 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?
14. ## Physics

A stone is thrown vertically upward with a speed of 19.0m/s How fast is it moving when it reaches a height of 10.0m
15. ## Physics

You throw a ball downward from a window at a speed of 1.8 m/s. How fast will it be moving when it hits the sidewalk 2.8 m below?
16. ## Physics

Explain how a drop of water bulging over the edge of a coin demonstrates surface tension.
17. ## Physics

What is the maximum total force exerted on a 78 kg astronaut by her seat during the launch of the Space Shuttle?
18. ## Physics

a woman on a bridge 75 high sees a raft floating at a constant speed on the river below.
19. ## GENERAL PHYSICS

Two long, parallel wires separated by 90 each carry currents of 2.0 in a horizontal direction.
20. ## physics

If wind blows at 44 m/s over a house, what is the net force on the roof if its area is 180 m^2 and is flat?
21. ## physics

How long does it take a plane, traveling at a speed of 170 m/s, to fly once around a circle whose radius is 2900 m?
22. ## physics

a guy throws a ball up and catches it 3.5 seconds later. what is the max height and initial velocity. Please help!
23. ## Physics

With the energy needed to warm up some amount of water from 40C to 64C, how high could you lift it?
24. ## Physics

Q: A car travels in a straight line for 4.6 h at a constant speed of 95 km/h . What is its acceleration? Answer in units of m/s 2
25. ## 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?
26. ## physics

Calculate the electrical attraction that a proton in a nucleus exerts on an orbiting electron if the two particles are 1.13×10^-10 m apart.
27. ## physics

if the direction of a magnetic field around a straight wire is counterlcockwise, which direciton is the current traveling?
28. ## Physics

A 6.25 kg solid ball with a radius of 0.185 m rolls without slipping at 3.55 m/s. What is its total kinetic energy?
29. ## physics

An object is projected at an angle of elevation of 45 degree with a velocity of 100 m/s calculate its range
30. ## physics

How fast (in ) must a centrifuge rotate if a particle 8.00 from the axis of rotation is to experience an acceleration of 117000 's?
31. ## physics

A roller coaster travels 101 ft at an angle of 45.7 ◦ above the horizontal. How far does it move horizontally
32. ## physics

A cars starts from rest and after 20 seconds its velocity becomes 108 km-1 find the acceleration of the car
33. ## Physics

how fast would you have to be traveling at in a spaceship in order to appear to age 20% slower than your classmate left behind on earth
34. ## physics

Calculate the distance you will travel if you maintain an average speed of 12km/h for one-half hour.
35. ## Physics

determine the image distance for an object that is 45.0 cm from a double convex lens having a focal length of 15.0 cm
36. ## PHYSICS HELP

what is the minimum amount of energy required to accelerate horizontally a 3.0g bullet from rest to a speed of 40.0 m/s?
37. ## 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?
38. ## Physics

A 4610 kg helicopter accelerated upwards at 2 m/s^2. What lift force is exerted by the air on the propellers?
39. ## Physics

An airplane lands and starts down the runway at a southwest velocity of 41 m/s. What constant acceleration allows it to come to a stop in 1.3 km?
40. ## physics

State the surface powers required to produce the following lenses with +6.25D front curves. a. -0.50 DS b. +0.50 DS c. +1.75 DS
41. ## physics

State the surface powers required to produce the following lenses with +6.25D front curves. a. -0.50 DS b. +0.50 DS c. +1.75 DS
42. ## physics

A skater is gliding along the ice at 2.2 , when she undergoes an acceleration of magnitude 1.2 for 3.0 . At the end of that time she is moving at 5.8
43. ## college physics

how long would it take a 4.50kW MOTOR TO RAISE A 175KG BOILER TO A PLATFORM 15.0M ABOVE THE FLOOR?
44. ## Physics

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

Using Green's Theorem evaluate the integral ∮c(xydx + x^2y^2 dy) where C is the triangle with vertices (0 ,0), (1, 0) and (1, 2).
46. ## Physics

What equations should I use to calculate the effective value of g, the acceleration of gravity (in meters/second^2), at 5800 km above the earth's surface?
47. ## physics

Calculate the internal energy of 25.0 g of low-density oxygen gas (O2) at a temperature of 255 K.
48. ## physics

Consider the motion of the tip of the minute hand of a clock. In one hour, the displacement and average velocity is .......
49. ## 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?
50. ## Physics

A 1300 sports car accelerates from rest to 90 in 6.5 . What is the average power delivered by the engine?
51. ## physics

What is the strength of intermolecular forces in methylated spirit, acetone, water, glycerin and oil
52. ## physics

Why does a conductor carrying current experiences force when held in a magnetic field at right angles to it?
53. ## physics

Resultant displacement from 12m east to5m north to9m vertically upward
54. ## physics

a projectile is fired at an angle of 60 degrees with the horizontal and with the initital velocity of 80 m/s. What is the time of flight?
55. ## physics

A hunk of cast concrete with a weight of 10 N will float if it displaces 10 N of water true or false
56. ## Physics

Calculate the resistance of a 900 watt toaster operating at 120 volts. Which formula do you use?
57. ## physics

How long will it take a 1030 W motor to lift a 330 kg piano to a sixth-story window 13.0 m above?
58. ## Physics

What coefficient of friction is required to stop a hockey puck sliding at 12.8 m/s initially over a distance of 66.5 m?
59. ## Physics

What is the partial pressure of water on a day when the temperature is 25C and the relative humidity is 33% P=___Pa
60. ## 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...
61. ## physics

Compute the electric field about a uniformly charged plane sheet using gauss law.
62. ## college physics

Calculate the angular speed of the moon if it makes a revolution around the earth in 27.3 days?
63. ## Physics

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

Calculate the skid-to-stop of a car travelling oa a road at 100km/h with a coefficient of friction of 0.68.
65. ## physics

if a race car's velocity increases from 4 m/s to 36 m/s over a 4 s time interval, its average acceleration would be 10 m/s 2 ? IS THIS TRUE ?
66. ## Health Physics

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

What is the volume of a metal which weighs 28g less in kerosene and the densty is 800 kgm3 than it does in air
68. ## physics

If you heat a thin circular ring in a oven, does the rings hole get larger or smaller.why?
69. ## 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 ?
70. ## physics

what is meant by the change go temperature of 1 degree celcius on the scale of a plantinum resistance thermometer
71. ## physics

Calculate the speed of sound wave in air if its frequencies and wavelengths are 256Hz and 1.32m
72. ## physics

if two forces 10N and 20N are inclined at angle 60degree to each other. Find the resultant force.
73. ## physics

Does the following represent a sample or a population? calories created while burning all of the coal taken from a rail car
74. ## physics

vector b has x,y, and z components of 4.0, 6.0, and 3.0 units, respectively. Calculate the magnitude of b and the angles that b makes with the coordinate axes.
75. ## Physics

Find the maximum height reached by a ball thrown upward at a velocity of 95ft/s
76. ## 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.
77. ## physics

Radio waves transmitted through space at 3.00¡¿10 8 m/s by the Voyager spacecraft have a wavelength of 0.120 m. What is their frequency?
78. ## Physics

An elevator is moving upward at 0.97 m/s when it experiences an acceleration 0.34 m/s 2 downward, over a distance of 0.80 m. What will its final velocity be?
79. ## PHYSICS!

Find the gauge pressure in pascals in a soap bubble 0.04 m in diameter. The surface tension is 25.0 x 10^4 Pa.
80. ## Physics

An airplane is flying at an altitude of 2,000 m with a speed of 216 m/s. What is the pressure of air outside the plane?
81. ## physics

If the sun's mass is about average, how many stars are there in the Milky Way galaxy? (This is all the information given in the question and I don't know where to go from here).
82. ## 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.
83. ## Physics

A 1200 kg sports car accelerates from 0m/s to 27m/s in 10s. What is the average power of the engine?
84. ## science (physics)

A projectileis given an initial velocity of icap + 2jcap . The catesian equation of its path
85. ## physics

How high will an object rise if it is projected upward at a 45 degree angle and an initial velocity of 50 m/s?
86. ## math in physics

find the force if f between charges of 100mc -50mc located 50cm a part?
87. ## science (physics)

A projectileis given an initial velocity of icap + 2jcap . The catesian equation of its path
88. ## 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?
89. ## Physics

Two positive charges of 0.2microC and 0.01 microC are placed 10cm apart. Calculate the work done in reducing their distance to 5 cm
90. ## physics

if the shortest lenght of the tube for resonance is 0.1m and next resonanc length is 0.35m what is the frequency of the vibration.
91. ## physics

What is the power delivered by a motor lifting an elevator weighing 1250kg up 89 floors at 16.8 meters per second
92. ## college physics

A cannonball shot at an angle of 60 Degrees had a range of 196m. What was its initial speed?
93. ## PHYSICS

A point source of a wave emits 195 watts. What is the intensity at a distance of 4.56 meters? I =
94. ## physics

a bus decreases its speed from 80kmh-1to 60kmh-1 in 5 sec find the acceleration
95. ## physics

A force of 291.0 N is used to push a 140 kg mass 30.0 m horizontally in 3.00 s. Calculate the power developed in kW.
96. ## physics

Find the field produced by a uniformly charged sheet carrying 93pC/cm2 .
97. ## jru-physics

what potential energy is acquired by a block of steel whose mass is 50 kg when it is raised 200 cm?
98. ## physics

What is the quantum particle of the electric field? Answer a. The proton. b. The electron. c. The photon. d. The neutron.
99. ## physics

What is quantity of heat required to melt down completely 1kg of ice at 30 degree celsius
100. ## Physics

A football is kicked at 15 m/s with an angle of 35 degrees with the ground. How long is it in the air? How far will it land? Can someone help plz... Thanks!