# physics( i have no idea how to go about gettign th

79,978 results, page 85

1. ### physics

How much work must be done to stop a 1070 kg car traveling at 111 km/h?
2. ### physics

Mass of a block is 3.9 kg and volume is 0.0005 m. Find density in g/cm
3. ### Physics

How to add vectors in terms of velocity by using vector chart
4. ### physics

describe the death of a massive star (10 solar masses)
5. ### Physics

If light in air is incident at 20°, at what angle is it refracted in glass?
6. ### physics

if 8.96dm of CO is produced at STP -how many moles of CaCO3 have reacted
7. ### physics

how do types of nuclear radiation differ in electric charge?
8. ### Physics

what maximizes our ability to recover elastic potential energy?
9. ### Science

What is the formula used for finding the gravitational pull of a particular mass in physics?
10. ### physics

Name two factors that dertermine the quality/timbre of a musical note.
11. ### University, Physics

Derive the error in equation: T1/2 = 1n(2)/lambda solve for T
12. ### Physics

Why use remote sensing for obtaining information about areas or objects?
13. ### physics

How much charge flows through a 12 V battery when a 2 ìC capacitor is connected across its terminal?
14. ### Physics

40 g of gasoline are mixed with 45 g of water. What is the average density of the mixture?
15. ### physics

What is the repulsive force between two pith balls that are 12.0 cm apart and have equal charges of -39.0 nC?
16. ### Physics

what must be the minimum velocity of a missile if it is strike a target a 100m away?
17. ### PHYSICS

If that charge is 3.7 μC , by what percentage does the mass of a 31 g comb change during charging?
18. ### science[physics]

why is the pressure more on ground when a person is walking than when he is standing ?
19. ### physics

Discribe the phase change that took place in the solid between the time t1 and t2?
20. ### Physics

The problem contains graphics that I don't know how to show other than in an image format: h t t p : / / b i t . l y / c D H P V M h t t p : / / b i t . l y / 9 m b y C R
21. ### 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.
22. ### physics

according to the statement given what is the magnitude of the velocity of the rock just before it strikes the ground
23. ### Physics

Find the modulus direction cosin unit vector 1) 4a-2b+3c (2) a-7b+5c (3)4a-3b+c
24. ### physics

Consider a concave mirror with radius R. An upright object is placed in between the interval R/2 and R. R
25. ### physics

Why air pressure in a car tyre increases during driving?
26. ### physics

As the wavelength of a wave in a uniform medium increases, its speed will ?
27. ### Physics

the force required to accelerate a mass of 10.0kg at 4.00m/s^2 is
28. ### physics

why is machinery not 100% efficient Friction, heat loss
29. ### physics

A nail is dropped from a height of 400m. How long does it take to land?
30. ### Physics

What is the force on the charge located at x = +8.00 cm in Figure 17.40(a) given that q = 5.00 µC and a = 2.50? (The positive direction is to the right.)
31. ### physics

An electron travels 1.91 m in 4.72x10^-8s. How fast does it travel? Answer in cm/s
32. ### physics

What is the acceleration of a 0.30 kg volleyball when a player uses a force of 93 N to spike the ball?
33. ### physics

You drive a car 7 h at 42 km/h, then 7 h at 65 km/h. what is your average velocity? answer in units of km/h
34. ### Physics

What is the force on the charge located at x = +8.00 cm in Figure 17.40(a) given that q = 5.00 µC and a = 2.50? (The positive direction is to the right.)
35. ### Physics

find the x- and y- component of vector R which has a length of 13cm at 30.0 degrees
36. ### physics-14

If room temperature is 70 degrees farenheit,what is kelvin?____
37. ### physics

A 31-m/s velocity vector that makes an angle of 44° counterclockwise from the -x direction. x: y:
38. ### Physics

What is the energy released in the fusion reaction: 2H+2H--> 4He + Q? How do I calculate this?
39. ### Physics

Find the length of a simple pendulum that completes 17.0 oscillations in 35.0 s.
40. ### Physics

What is the scientific principle involved in unmanned level crossing?
41. ### Physics

What is the scientific principle involved in unmanned level crossing?
42. ### physics

How much work does gravity do on a 0.120-kg ball falling from a height of 17.0 m?
43. ### physics

A bicyclist is traveling at 19.3 km/h when he speeds up with a constant acceleration of 0.67 m/s2. What is his velocity after 5.00 s?
44. ### physics

Calculate the angular velocity of the minute hand of a clock.
45. ### Physics

Explain why the pressure at depth h in a stationary fluid is rho g h.
46. ### physics

How long does it take the horse to cover the first 35.0 m of the race? acceleration is 3.00m/s^2
47. ### PHYSICS

A bicycle tire is 68 cm in diameter. what frequency does it have if it travels at 8m/ sec?
48. ### physics

calculate the electrostatic force between charges of -2.4 µC and +5.3 µC, placed 58cm apart in a vaccum.
49. ### physics

exercise 4.1 suppose the pilot start agin from rest
50. ### physics

Please show me how to derive the relativist mass formula: m = m0 / sqrt(1 - v^2/c^2)?
51. ### physics

Two point charges, +4.00 ìC and -7.00 ìC, are separated by 2.20 m. What is the electric potential midway between them?
52. ### Physics

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

Find x- and y-components of the vector \vec {v}=(2.0cm/s , - x-direction).
54. ### Physics

Explain why a balloon expands when heated and contracts when cooled.
55. ### Physics

With speed 75m/s and period 5.42ms, calculate the wavelength.
56. ### physics

What,is,the,weight,of,150lb,person,in,newtons?,What,is,his,mass,in,kilograms?
57. ### Physics

Explanation of twin paradox in regards to special relativity theory.
58. ### Physics

If a clock says 10:30 am and the second hand rotates 960 degrees what time would it be?
59. ### physics

What.is.the.weight.of.a.150.lb.person.in.newtons?.what.is.his.mass.in.kilograms?
60. ### physics

Explain why the pressure at depth h in a stationary fluid is rho g h.
61. ### Physics

How do the initial and final horizontal velocities of a projectile compare?
62. ### physics

What is the value of the gravitational acceleration at a height of 2000 km above the surface of the Earth?
63. ### physics

what speed must you toss a ball straight up so it takes 2s to return to you
64. ### physics

an apple weighs about 1N. what is its mass in kilograms ? what is its weight in pounds?
65. ### Physics

the higher the angle the longer an objecg will be in the air , but dose that mean it will go further ?
66. ### Physics

14. Which of the following wavelengths will produce standing waves on a string that is 3.5 m long? a. 1.75 m b. 3.5 m c. 5.0 m d. 7.0 m
67. ### physics

Any object that moves through the air (or space) under the influence of gravity is...?
68. ### Physics

Could someone explain to me about how live, earth and neutral wires work?
69. ### Physics

A proton is at the origin and an electron is at the point x = 0.36nm , y= 0.30nm .
70. ### physics

how many RPM are required to attain 1g with a radius of 840 feet
71. ### physics

Why the blood pressre in human greater at the feet than in the brain?
72. ### Physics

What is the energy (in eV ) of a photon of visible light that has a wavelength of 500 nm ?
73. ### physics

Why does a 10 gram bullet have more momentum traveling at 200m/s than at 20m/s?
74. ### physics

of the following the largest quantity is a] 0.047 cm b] 47x10-4 cm c] 4.7x 10-4 cm d] 0.00047x10^2 cm e] 0.000047x10^6 cm
75. ### Physics

You carry a 20 n box 5 m horizontally across a room. The work you do is? Is 4 J correct?
76. ### physics

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

what is the mass of a playset that is moved with 580n of force for 11 seconds at 1.5 m/s?
78. ### Physics

How do you determine the average velocity on a position-time graph?
79. ### physics

A 12 V battery will increase the potential energy of 2.1 C of charge by how many joules?
80. ### physics

How does a vaccum flask minimize heat change with surrounding
81. ### physics

Why the mesaure of the sphere doesn't play a part at the pendulum???
82. ### physics

How much work must be done to stop a 1040 kg car traveling at 111 km/h?
83. ### physics

What kind of motion makes the pendulum when the amplitudes are small ????
84. ### Physics

The speed of an electron is known to be between 3.0×10^6 m/s and 3.3×10^6 m/s . Estimate the uncertainty in its position. Change in X = ? M
85. ### physics

If jon has a weight of 645N what is his mass? I have to do this using the GUESS METHOD
86. ### physics

If pressure is given by P=A+B by t and -c by D +v where t and v are time and velocity respectively then find dimensional formula of A, B,C&D.
87. ### Physics

What is the electric force of attraction between charges of 3 C and -4 C separated by a distance of 2 m?
88. ### physics

a car is moving at 40km per hour what is the velocity in meters per second?
89. ### physics

joe weighs 650N. how much work does he do if he climbs 4m up a a rope?
90. ### Physics

When is your weight normal, higher, or lower while moving up and down in an elevator?
91. ### Physics

Calculate the acceleration of a plane when it changes its speed from 0m/s to 250m/s in 12 seconds
92. ### physics

what is the speed of 1kg object when the kinetic energy is 1 joule
93. ### physics

if velocity vector is changing but speed is constant, can there still be work
94. ### mathematical physics

Obtain all the first and second order partial derivatives of the function: f( x, y ) = In(I+xy^2)
95. ### physics

which is more work pushing with 115N over 15 m or lifting 20N 10meters
96. ### physics

If the speed of an object is doubled its kinetic energy is multiplied by
97. ### Gr 11 Physics Optics Unit

Explain why a virtual image must always be upright.
98. ### physics

A particle at rest undergoes an acceleration of 2.5 m/s^2 to the right and 3.2 m/s^2 up. What is its speed after 5.9s? Answer in m/s
99. ### physics

Why is more impulse delivered during a collision when bouncing occurs than during one when it doesn't?
100. ### physics

How do I find the magnitude from this data: theta_1 = 44.9 theta_2 = 146.1 A = 4.8 cm B = 8.7 cm